draft-ietf-bmwg-protection-meth-02.txt   draft-ietf-bmwg-protection-meth-03.txt 
Network Working Group R. Papneja Network Working Group R. Papneja
Internet Draft Isocore Internet Draft Isocore
Intended status: Informational S.Vapiwala Intended status: Informational S.Vapiwala
Expires: January 2008 J.Karthik Expires: August 2008 J. Karthik
Cisco Systems Cisco Systems
S. Poretsky S. Poretsky
Reef Point Reef Point
S. Rao S. Rao
Qwest Communications Qwest Communications
Jean-Louis Le Roux Jean-Louis Le Roux
France Telecom France Telecom
July 6, 2007 February 19, 2008
Methodology for benchmarking MPLS Protection mechanisms Methodology for benchmarking MPLS Protection mechanisms
<draft-ietf-bmwg-protection-meth-02.txt> <draft-ietf-bmwg-protection-meth-03.txt>
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Copyright Notice Copyright Notice
Copyright (C) The IETF Trust (2008).
Poretsky, Rao, Le Roux Poretsky, Rao, Le Roux
Protection Mechanisms Protection Mechanisms
Copyright (C) The IETF Trust (2007).
Abstract Abstract
This draft describes the methodology for benchmarking MPLS Protection This draft describes the methodology for benchmarking MPLS Protection
mechanisms for link and node protection as defined in [MPLS-FRR-EXT]. mechanisms for link and node protection as defined in [MPLS-FRR-EXT].
The benchmarking and terminology [TERM-ID] are to be used for The benchmarking and terminology [TERM-ID] are to be used for
benchmarking MPLS based protection mechanisms [MPLS-FRR-EXT]. This benchmarking MPLS based protection mechanisms [MPLS-FRR-EXT]. This
document provides test methodologies and test-bed setup for measuring document provides test methodologies and test-bed setup for measuring
failover times while considering all dependencies that might impact failover times while considering all dependencies that might impact
faster recovery of real time services riding on MPLS based primary faster recovery of real time services riding on MPLS based primary
tunnel. The terms used in the procedures included in this document are tunnel. The terms used in the procedures included in this document are
defined in [TERM-ID]. defined in [TERM-ID].
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC-2119 [RFC-WORDS].
Table of Contents Table of Contents
1. Introduction...................................................3 1. Introduction...................................................3
2. Existing definitions...........................................6 2. Existing definitions...........................................6
3. Test Considerations............................................6 3. Test Considerations............................................6
3.1. Failover Events...........................................6 3.1. Failover Events...........................................6
3.2. Failure Detection [TERM-ID]...............................7 3.2. Failure Detection [TERM-ID]...............................7
3.3. Use of Data Traffic for MPLS Protection Benchmarking......8 3.3. Use of Data Traffic for MPLS Protection Benchmarking......8
3.4. LSP and Route Scaling.....................................8 3.4. LSP and Route Scaling.....................................8
3.5. Selection of IGP..........................................9 3.5. Selection of IGP..........................................8
3.6. Reversion [TERM-ID].......................................9 3.6. Reversion [TERM-ID].......................................9
3.7. Traffic generation........................................9 3.7. Traffic generation........................................9
3.8. Motivation for topologies................................10 3.8. Motivation for topologies.................................9
4. Test Setup....................................................10 4. Test Setup....................................................10
4.1. Link Protection with 1 hop primary (from PLR) and 1 hop 4.1. Link Protection with 1 hop primary (from PLR) and 1 hop
backup........................................................11 backup........................................................11
TE tunnels....................................................11 TE tunnels....................................................11
4.2. Link Protection with 1 hop primary (from PLR) and 2 hop 4.2. Link Protection with 1 hop primary (from PLR) and 2 hop
backup TE tunnels.............................................11 backup TE tunnels.............................................11
4.3. Link Protection with 2+ hop (from PLR) primary and 1 hop 4.3. Link Protection with 2+ hop (from PLR) primary and 1 hop
backup TE tunnels.............................................12 backup TE tunnels.............................................12
4.4. Link Protection with 2+ hop (from PLR) primary and 2 hop 4.4. Link Protection with 2+ hop (from PLR) primary and 2 hop
backup TE tunnels.............................................12
4.5. Node Protection with 2 hop primary (from PLR) and 1 hop
backup TE tunnels.............................................13 backup TE tunnels.............................................13
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4.5. Node Protection with 2 hop primary (from PLR) and 1 hop
backup TE tunnels.............................................14
4.6. Node Protection with 2 hop primary (from PLR) and 2 hop 4.6. Node Protection with 2 hop primary (from PLR) and 2 hop
backup TE tunnels.............................................15 backup TE tunnels.............................................14
4.7. Node Protection with 3+ hop primary (from PLR) and 1 hop 4.7. Node Protection with 3+ hop primary (from PLR) and 1 hop
backup TE tunnels.............................................16 backup TE tunnels.............................................15
4.8. Node Protection with 3+ hop primary (from PLR) and 2 hop 4.8. Node Protection with 3+ hop primary (from PLR) and 2 hop
backup TE tunnels.............................................16 backup TE tunnels.............................................16
5. Test Methodology..............................................17 5. Test Methodology..............................................16
5.1. Headend as PLR with link failure.........................18 5.1. Headend as PLR with link failure.........................16
5.2. Mid-Point as PLR with link failure.......................19 5.2. Mid-Point as PLR with link failure.......................18
5.3. Headend as PLR with Node failure.........................20 5.3. Headend as PLR with Node failure.........................19
5.4. Mid-Point as PLR with Node failure.......................21 5.4. Mid-Point as PLR with Node failure.......................20
5.5. MPLS FRR Forwarding Performance Test Cases...............23 5.5. MPLS FRR Forwarding Performance Test Cases...............22
5.5.1. PLR as Headend......................................23 5.5.1. PLR as Headend......................................22
5.5.2. PLR as Mid-point....................................24 5.5.2. PLR as Mid-point....................................23
6. Reporting Format..............................................25 6. Reporting Format..............................................24
7. IANA Considerations...........................................26 7. IANA Considerations...........................................25
This document requires no IANA considerations....................26 This document requires no IANA considerations....................25
8. Security Considerations.......................................27 8. Security Considerations.......................................25
9. Acknowledgements..............................................27 9. Acknowledgements..............................................26
10. References...................................................28 10. References...................................................26
10.1. Normative References....................................28 10.1. Normative References....................................26
10.2. Informative References..................................28 10.2. Informative References..................................27
11. Authors' Addresses...........................................28 11. Authors' Addresses...........................................27
Intellectual Property Statement..................................30 Intellectual Property Statement..................................29
Appendix A: Fast Reroute Scalability Table.......................31 Appendix A: Fast Reroute Scalability Table.......................30
1. Introduction 1. Introduction
This draft describes the methodology for benchmarking MPLS based This draft describes the methodology for benchmarking MPLS based
protection mechanisms. The new terminology that it introduces is defined protection mechanisms. The new terminology that it introduces is defined
in [TERM-ID]. in [TERM-ID].
MPLS based protection mechanisms provide faster recovery of real time MPLS based protection mechanisms provide faster recovery of real time
services in case of an unplanned link or node failure in the network services in case of an unplanned link or node failure in the network
core, where MPLS is used as a signaling protocol to setup point-to-point core, where MPLS is used as a signaling protocol to setup point-to-point
traffic engineered tunnels. MPLS based protection mechanisms improve traffic engineered tunnels. MPLS based protection mechanisms improve
service availability by minimizing the duration of the most common service availability by minimizing the duration of the most common
failures. There are generally two factors impacting service failures. There are generally two factors impacting service
availability. One is the frequency and the other is the duration of the availability. One is the frequency and the other is the duration of the
failure. Unexpected correlated failures are less common. Correlated
failures mean co-occurrence of two or more failures simultaneously.
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failure. Unexpected correlated failures are less common. Correlated
failures mean co-occurrence of two or more failures simultaneously.
These failures are often observed when two or more logical resources These failures are often observed when two or more logical resources
(for e.g. layer-2 links), relying on a common physical resource (for (for e.g. layer-2 links), relying on a common physical resource (for
e.g. common transport) fail. Common transport may include TDM and WDM e.g. common transport) fail. Common transport may include TDM and WDM
links providing multiplexing at layer-2 and layer-1. Within the context links providing multiplexing at layer-2 and layer-1. Within the context
of MPLS protection mechanisms, Shared Risk Link Groups [MPLS-FRR-EXT] of MPLS protection mechanisms, Shared Risk Link Groups [MPLS-FRR-EXT]
encompass correlations failures. encompass correlations failures.
Not all correlated failures can be anticipated in advance of their Not all correlated failures can be anticipated in advance of their
occurrence. Failures due to natural disasters or planned failures are occurrence. Failures due to natural disasters or planned failures are
the most notable causes. Due to the frequent occurrences of such the most notable causes. Due to the frequent occurrences of such
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of prefixes bound to a tunnel, services (such as IGP, BGP, Layer 3/ of prefixes bound to a tunnel, services (such as IGP, BGP, Layer 3/
Layer 2 VPNs) that are bound to the tunnel, number of primary tunnels Layer 2 VPNs) that are bound to the tunnel, number of primary tunnels
affected by the failure event, number of primary tunnels protected by affected by the failure event, number of primary tunnels protected by
backup, the type of failure and the physical media on which the failover backup, the type of failure and the physical media on which the failover
occurs. This document describes all different topologies and scenarios occurs. This document describes all different topologies and scenarios
that should be considered to effectively benchmark MPLS protection that should be considered to effectively benchmark MPLS protection
mechanisms and failover times. Different failure scenarios and scaling mechanisms and failover times. Different failure scenarios and scaling
considerations are also provided in this document. In addition the considerations are also provided in this document. In addition the
document provides a reporting format for the observed results. document provides a reporting format for the observed results.
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To benchmark the failover time, data plane traffic is used as defined in To benchmark the failover time, data plane traffic is used as defined in
[IGP-METH]. Traffic loss is the key component in a black-box type test [IGP-METH]. Traffic loss is the key component in a black-box type test
and is used to measure convergence. and is used to measure convergence.
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All benchmarking test cases defined in this document apply to both All benchmarking test cases defined in this document apply to both
facility backup and local protection enabled in detour mode. The test facility backup and local protection enabled in detour mode. The test
cases cover all possible failure scenarios and the associated procedures cases cover all possible failure scenarios and the associated procedures
benchmark the ability of the DUT to perform recovery from failures benchmark the ability of the DUT to perform recovery from failures
within target failover time. within target failover time.
Figure 1 represents the basic reference test bed and is applicable to Figure 1 represents the basic reference test bed and is applicable to
all the test cases defined in this document. TG & TA represents Traffic all the test cases defined in this document. TG & TA represents Traffic
Generator & Analyzer respectively. A tester is connected to the DUT and Generator & Analyzer respectively. A tester is connected to the DUT and
it sends and receives IP traffic along with the working Path, run it sends and receives IP traffic along with the working Path, run
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| -------- | | | -------- | |
---------| R6 |-------- | ---------| R6 |-------- |
| |-------------------- | |--------------------
-------- --------
Fig.1: Fast Reroute Topology. Fig.1: Fast Reroute Topology.
The tester MUST record the number of lost, duplicate, and reordered The tester MUST record the number of lost, duplicate, and reordered
packets. It should further record arrival and departure times so that packets. It should further record arrival and departure times so that
Failover Time, Additive Latency, and Reversion Time can be measured. Failover Time, Additive Latency, and Reversion Time can be measured.
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The tester may be a single device or a test system emulating all the The tester may be a single device or a test system emulating all the
different roles along a primary or backup path. different roles along a primary or backup path.
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2. Existing definitions 2. Existing definitions
For the sake of clarity and continuity this RFC adopts the template For the sake of clarity and continuity this RFC adopts the template
for definitions set out in Section 2 of RFC 1242. Definitions are for definitions set out in Section 2 of RFC 1242. Definitions are
indexed and grouped together in sections for ease of reference. indexed and grouped together in sections for ease of reference.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in
this document are to be interpreted as described in RFC 2119. this document are to be interpreted as described in RFC 2119.
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3.1. Failover Events 3.1. Failover Events
The failover to the backup tunnel is primarily triggered by either a The failover to the backup tunnel is primarily triggered by either a
link or node failures observed downstream of the Point of Local link or node failures observed downstream of the Point of Local
repair (PLR). Some of these failure events are listed below. repair (PLR). Some of these failure events are listed below.
Link failure events Link failure events
- Interface Shutdown on PLR side with POS Alarm - Interface Shutdown on PLR side with POS Alarm
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- Interface Shutdown on remote side with POS Alarm - Interface Shutdown on remote side with POS Alarm
- Interface Shutdown on PLR side with RSVP hello - Interface Shutdown on PLR side with RSVP hello
- Interface Shutdown on remote side with RSVP hello - Interface Shutdown on remote side with RSVP hello
- Interface Shutdown on PLR side with BFD - Interface Shutdown on PLR side with BFD
- Interface Shutdown on remote side with BFD - Interface Shutdown on remote side with BFD
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- Fiber Pull on the PLR side (Both TX & RX or just the Tx) - Fiber Pull on the PLR side (Both TX & RX or just the Tx)
- Fiber Pull on the remote side (Both TX & RX or just the Rx) - Fiber Pull on the remote side (Both TX & RX or just the Rx)
- Online insertion and removal (OIR) on PLR side - Online insertion and removal (OIR) on PLR side
- OIR on remote side - OIR on remote side
- Sub-interface failure (e.g. shutting down of a VLAN) - Sub-interface failure (e.g. shutting down of a VLAN)
- Parent interface shutdown (an interface bearing multiple sub- - Parent interface shutdown (an interface bearing multiple sub-
interfaces interfaces
Node failure events Node failure events
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Different MPLS protection mechanisms and different implementations Different MPLS protection mechanisms and different implementations
use different failure detection techniques such as RSVP hellos, BFD use different failure detection techniques such as RSVP hellos, BFD
etc. Ethernet technologies such as Gigabit Ethernet rely upon layer 3 etc. Ethernet technologies such as Gigabit Ethernet rely upon layer 3
failure indication mechanisms since there is no Layer 2 failure failure indication mechanisms since there is no Layer 2 failure
indication mechanism. The failure detection time may not always be indication mechanism. The failure detection time may not always be
negligible and it could impact the overall failover time. negligible and it could impact the overall failover time.
The test procedures in this document can be used for a local failure The test procedures in this document can be used for a local failure
or remote failure scenarios for comprehensive benchmarking and to or remote failure scenarios for comprehensive benchmarking and to
evaluate failover performance independent of the failure detection
techniques.
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Protection Mechanisms Protection Mechanisms
evaluate failover performance independent of the failure detection
techniques.
3.3. Use of Data Traffic for MPLS Protection Benchmarking 3.3. Use of Data Traffic for MPLS Protection Benchmarking
Currently end customers use packet loss as a key metric for failover Currently end customers use packet loss as a key metric for failover
time. Packet loss is an externally observable event and has direct time. Packet loss is an externally observable event and has direct
impact on customers' applications. MPLS protection mechanism is impact on customers' applications. MPLS protection mechanism is
expected to minimize the packet loss in the event of a failure. For expected to minimize the packet loss in the event of a failure. For
this reason it is important to develop a standard router benchmarking this reason it is important to develop a standard router benchmarking
methodology for measuring MPLS protection that uses packet loss as a methodology for measuring MPLS protection that uses packet loss as a
metric. At a known rate of forwarding, packet loss can be measured metric. At a known rate of forwarding, packet loss can be measured
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attributed to lost packets. attributed to lost packets.
3.4. LSP and Route Scaling 3.4. LSP and Route Scaling
Failover time performance may vary with the number of established Failover time performance may vary with the number of established
primary and backup tunnels (LSP) and installed routes. However the primary and backup tunnels (LSP) and installed routes. However the
procedure outlined here should be used for any number of LSPs (L) and procedure outlined here should be used for any number of LSPs (L) and
number of routes protected by PLR(R). Number of L and R must be number of routes protected by PLR(R). Number of L and R must be
recorded. recorded.
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3.5. Selection of IGP 3.5. Selection of IGP
The underlying IGP could be ISIS-TE or OSPF-TE for the methodology The underlying IGP could be ISIS-TE or OSPF-TE for the methodology
proposed here. proposed here.
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3.6. Reversion [TERM-ID] 3.6. Reversion [TERM-ID]
Fast Reroute provides a method to return or restore a backup path to Fast Reroute provides a method to return or restore a backup path to
original primary LSP upon recovery from the failure. This is referred original primary LSP upon recovery from the failure. This is referred
to as Reversion, which can be implemented as Global Reversion or to as Reversion, which can be implemented as Global Reversion or
Local Reversion. In all test cases listed here Reversion should not Local Reversion. In all test cases listed here Reversion should not
produce any packet loss, out of order or duplicate packets. Each of produce any packet loss, out of order or duplicate packets. Each of
the test cases in this methodology document provides a check to the test cases in this methodology document provides a check to
confirm that there is no packet loss. confirm that there is no packet loss.
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tunnel (probably in a Round-Robin fashion, where the traffic is tunnel (probably in a Round-Robin fashion, where the traffic is
destined to all the prefixes but one prefix at a time in a cyclic destined to all the prefixes but one prefix at a time in a cyclic
manner) is not recommended. The reason why traffic generation is not manner) is not recommended. The reason why traffic generation is not
recommended in a Round-Robin fashion to all the prefixes, one at a recommended in a Round-Robin fashion to all the prefixes, one at a
time is that if there are many prefixes reachable through the LSP the time is that if there are many prefixes reachable through the LSP the
time interval between 2 packets destined to one prefix may be time interval between 2 packets destined to one prefix may be
significantly high and may be comparable with the failover time being significantly high and may be comparable with the failover time being
measured which does not aid in getting an accurate failover measured which does not aid in getting an accurate failover
measurement. measurement.
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3.8. Motivation for topologies 3.8. Motivation for topologies
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Given that the label stack is dependent of the following 3 entities Given that the label stack is dependent of the following 3 entities
it is recommended that the benchmarking of failover time be performed it is recommended that the benchmarking of failover time be performed
on all the 8 topologies provided in section 4 on all the 8 topologies provided in section 4
- Type of protection (Link Vs Node) - Type of protection (Link Vs Node)
- # of remaining hops of the primary tunnel from the PLR - # of remaining hops of the primary tunnel from the PLR
- # of remaining hops of the backup tunnel from the PLR - # of remaining hops of the backup tunnel from the PLR
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b) TE is Tail-End b) TE is Tail-End
c) MID is Mid point c) MID is Mid point
d) MP is Merge Point d) MP is Merge Point
e) PLR is Point of Local Repair e) PLR is Point of Local Repair
f) PRI is Primary f) PRI is Primary
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g) BKP denotes Backup Node g) BKP denotes Backup Node
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4.1. Link Protection with 1 hop primary (from PLR) and 1 hop backup 4.1. Link Protection with 1 hop primary (from PLR) and 1 hop backup
TE tunnels TE tunnels
------- -------- PRI -------- ------- -------- PRI --------
| R1 | | R2 | | R3 | | R1 | | R2 | | R3 |
TG-| HE |--| MID |----| TE |-TA TG-| HE |--| MID |----| TE |-TA
| | | PLR |----| | | | | PLR |----| |
------- -------- BKP -------- ------- -------- BKP --------
Figure 2: Represents the setup for section 4.1 Figure 2: Represents the setup for section 4.1
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| R1 | | R2 | | R3 | | R1 | | R2 | | R3 |
TG-| HE | | MID |PRI | TE |-TA TG-| HE | | MID |PRI | TE |-TA
| |----| PLR |----| | | |----| PLR |----| |
------- -------- -------- ------- -------- --------
|BKP | |BKP |
| -------- | | -------- |
| | R6 | | | | R6 | |
|----| BKP |----| |----| BKP |----|
| MID | | MID |
-------- --------
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Figure 3: Representing setup for section 4.2 Figure 3: Representing setup for section 4.2
Traffic No of Labels No of labels Traffic No of Labels No of labels
before failure after failure before failure after failure
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IP TRAFFIC (P-P) 0 1 IP TRAFFIC (P-P) 0 1
Layer3 VPN (PE-PE) 1 2 Layer3 VPN (PE-PE) 1 2
Layer3 VPN (PE-P) 2 3 Layer3 VPN (PE-P) 2 3
Layer2 VC (PE-PE) 1 2 Layer2 VC (PE-PE) 1 2
Layer2 VC (PE-P) 2 3 Layer2 VC (PE-P) 2 3
Mid-point LSPs 0 1 Mid-point LSPs 0 1
4.3. Link Protection with 2+ hop (from PLR) primary and 1 hop backup TE 4.3. Link Protection with 2+ hop (from PLR) primary and 1 hop backup TE
tunnels tunnels
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Traffic No of Labels No of labels Traffic No of Labels No of labels
before failure after failure before failure after failure
IP TRAFFIC (P-P) 1 1 IP TRAFFIC (P-P) 1 1
Layer3 VPN (PE-PE) 2 2 Layer3 VPN (PE-PE) 2 2
Layer3 VPN (PE-P) 3 3 Layer3 VPN (PE-P) 3 3
Layer2 VC (PE-PE) 2 2 Layer2 VC (PE-PE) 2 2
Layer2 VC (PE-P) 3 3 Layer2 VC (PE-P) 3 3
Mid-point LSPs 1 1 Mid-point LSPs 1 1
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4.4. Link Protection with 2+ hop (from PLR) primary and 2 hop backup TE 4.4. Link Protection with 2+ hop (from PLR) primary and 2 hop backup TE
tunnels tunnels
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-------- -------- PRI -------- PRI -------- -------- -------- PRI -------- PRI --------
| R1 | | R2 | | R3 | | R4 | | R1 | | R2 | | R3 | | R4 |
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TG-| HE |----| MID |----| MID |------| TE |-TA TG-| HE |----| MID |----| MID |------| TE |-TA
| | | PLR | | | | | | | | PLR | | | | |
-------- -------- -------- -------- -------- -------- -------- --------
BKP| | BKP| |
| -------- | | -------- |
| | R6 | | | | R6 | |
---| BKP |- ---| BKP |-
| MID | | MID |
-------- --------
Figure 5: Representing the setup for section 4.4 Figure 5: Representing the setup for section 4.4
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-------- -------- -------- -------- -------- -------- -------- --------
| R1 | | R2 |PRI | R3 | PRI | R4 | | R1 | | R2 |PRI | R3 | PRI | R4 |
TG-| HE |----| MID |----| MID |------| TE |-TA TG-| HE |----| MID |----| MID |------| TE |-TA
| | | PLR | | | | | | | | PLR | | | | |
-------- -------- -------- -------- -------- -------- -------- --------
|BKP | |BKP |
----------------------------- -----------------------------
Figure 6: Representing the setup for section 4.5 Figure 6: Representing the setup for section 4.5
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Traffic No of Labels No of labels Traffic No of Labels No of labels
before failure after failure before failure after failure
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IP TRAFFIC (P-P) 1 0 IP TRAFFIC (P-P) 1 0
Layer3 VPN (PE-PE) 2 1 Layer3 VPN (PE-PE) 2 1
Layer3 VPN (PE-P) 3 2 Layer3 VPN (PE-P) 3 2
Layer2 VC (PE-PE) 2 1 Layer2 VC (PE-PE) 2 1
Layer2 VC (PE-P) 3 2 Layer2 VC (PE-P) 3 2
Mid-point LSPs 1 0 Mid-point LSPs 1 0
4.6. Node Protection with 2 hop primary (from PLR) and 2 hop backup TE 4.6. Node Protection with 2 hop primary (from PLR) and 2 hop backup TE
tunnels tunnels
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| MID | | MID |
-------- --------
Figure 7: Representing setup for section 4.6 Figure 7: Representing setup for section 4.6
Traffic No of Labels No of labels Traffic No of Labels No of labels
before failure after failure before failure after failure
IP TRAFFIC (P-P) 1 1 IP TRAFFIC (P-P) 1 1
Layer3 VPN (PE-PE) 2 2 Layer3 VPN (PE-PE) 2 2
Layer3 VPN (PE-P) 3 3 Layer3 VPN (PE-P) 3 3
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Layer2 VC (PE-PE) 2 2 Layer2 VC (PE-PE) 2 2
Layer2 VC (PE-P) 3 3 Layer2 VC (PE-P) 3 3
Mid-point LSPs 1 1 Mid-point LSPs 1 1
Poretsky, Rao, Le Roux
Protection Mechanisms
4.7. Node Protection with 3+ hop primary (from PLR) and 1 hop backup TE 4.7. Node Protection with 3+ hop primary (from PLR) and 1 hop backup TE
tunnels tunnels
-------- -------- PRI -------- PRI -------- PRI -------- -------- -------- PRI -------- PRI -------- PRI --------
| R1 | | R2 | | R3 | | R4 | | R5 | | R1 | | R2 | | R3 | | R4 | | R5 |
TG-| HE |--| MID |---| MID |---| MP |---| TE |-TA TG-| HE |--| MID |---| MID |---| MP |---| TE |-TA
| | | PLR | | | | | | | | | | PLR | | | | | | |
-------- -------- -------- -------- -------- -------- -------- -------- -------- --------
BKP| | BKP| |
-------------------------- --------------------------
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Traffic No of Labels No of labels Traffic No of Labels No of labels
before failure after failure before failure after failure
IP TRAFFIC (P-P) 1 1 IP TRAFFIC (P-P) 1 1
Layer3 VPN (PE-PE) 2 2 Layer3 VPN (PE-PE) 2 2
Layer3 VPN (PE-P) 3 3 Layer3 VPN (PE-P) 3 3
Layer2 VC (PE-PE) 2 2 Layer2 VC (PE-PE) 2 2
Layer2 VC (PE-P) 3 3 Layer2 VC (PE-P) 3 3
Mid-point LSPs 1 1 Mid-point LSPs 1 1
4.8. Node Protection with 3+ hop primary (from PLR) and 2 hop backup
TE tunnels
Poretsky, Rao, Le Roux Poretsky, Rao, Le Roux
Protection Mechanisms Protection Mechanisms
4.8. Node Protection with 3+ hop primary (from PLR) and 2 hop backup
TE tunnels
-------- -------- -------- -------- -------- -------- -------- -------- -------- --------
| R1 | | R2 | | R3 | | R4 | | R5 | | R1 | | R2 | | R3 | | R4 | | R5 |
TG-| HE | | MID |PRI| MID |PRI| MP |PRI| TE |-TA TG-| HE | | MID |PRI| MID |PRI| MP |PRI| TE |-TA
| |-- | PLR |---| |---| |---| | | |-- | PLR |---| |---| |---| |
-------- -------- -------- -------- -------- -------- -------- -------- -------- --------
BKP| | BKP| |
| -------- | | -------- |
| | R6 | | | | R6 | |
---------| BKP |------- ---------| BKP |-------
| MID | | MID |
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5. Test Methodology 5. Test Methodology
The procedure described in this section can be applied to all the 8 The procedure described in this section can be applied to all the 8
base test cases and the associated topologies. The backup as well as base test cases and the associated topologies. The backup as well as
the primary tunnel are configured to be alike in terms of bandwidth the primary tunnel are configured to be alike in terms of bandwidth
usage. In order to benchmark failover with all possible label stack usage. In order to benchmark failover with all possible label stack
depth applicable as seen with current deployments, it is suggested depth applicable as seen with current deployments, it is suggested
that the methodology includes all the scenarios listed here that the methodology includes all the scenarios listed here
Poretsky, Rao, Le Roux
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5.1. Headend as PLR with link failure 5.1. Headend as PLR with link failure
Objective Objective
Poretsky, Rao, Le Roux
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To benchmark the MPLS failover time due to Link failure events To benchmark the MPLS failover time due to Link failure events
described in section 3.1 experienced by the DUT which is the point described in section 3.1 experienced by the DUT which is the point
of local repair (PLR). of local repair (PLR).
Test Setup Test Setup
- select any one topology out of 8 from section 4 - select any one topology out of 8 from section 4
- select overlay technology for FRR test e.g. IGP,VPN,or VC - select overlay technology for FRR test e.g. IGP,VPN,or VC
- The DUT will also have 2 interfaces connected to the traffic - The DUT will also have 2 interfaces connected to the traffic
Generator/analyzer. (If the node downstream of the PLR is not Generator/analyzer. (If the node downstream of the PLR is not
skipping to change at page 19, line 4 skipping to change at page 17, line 41
1. Establish the primary lsp on R2 required by the topology 1. Establish the primary lsp on R2 required by the topology
selected selected
2. Establish the backup lsp on R2 required by the selected 2. Establish the backup lsp on R2 required by the selected
topology topology
3. Verify primary and backup lsps are up and that primary is 3. Verify primary and backup lsps are up and that primary is
protected protected
4. Verify Fast Reroute protection is enabled and ready 4. Verify Fast Reroute protection is enabled and ready
5. Setup traffic streams as described in section 3.7 5. Setup traffic streams as described in section 3.7
6. Send IP traffic at maximum Forwarding Rate to DUT. 6. Send IP traffic at maximum Forwarding Rate to DUT.
7. Verify traffic switched over Primary LSP. 7. Verify traffic switched over Primary LSP.
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8. Trigger any choice of Link failure as describe in section 8. Trigger any choice of Link failure as describe in section
3.1 3.1
9. Verify that primary tunnel and prefixes gets mapped to 9. Verify that primary tunnel and prefixes gets mapped to
backup tunnels backup tunnels
10. Stop traffic stream and measure the traffic loss. 10. Stop traffic stream and measure the traffic loss.
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11. Failover time is calculated as defined in section 6, 11. Failover time is calculated as defined in section 6,
Reporting format. Reporting format.
12. Start traffic stream again to verify reversion when 12. Start traffic stream again to verify reversion when
protected interface comes up. Traffic loss should be 0 due protected interface comes up. Traffic loss should be 0 due
to make before break or reversion. to make before break or reversion.
13. Enable protected interface that was down (Node in the case 13. Enable protected interface that was down (Node in the case
of NNHOP) of NNHOP)
14. Verify head-end signals new LSP and protection should be in 14. Verify head-end signals new LSP and protection should be in
place again place again
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- The DUT will also have 2 interfaces connected to the traffic - The DUT will also have 2 interfaces connected to the traffic
generator. generator.
Test Configuration Test Configuration
1. Configure the number of primaries on R1 and the backups on 1. Configure the number of primaries on R1 and the backups on
R2 as required by the topology selected R2 as required by the topology selected
2. Advertise prefixes (as per FRR Scalability table describe in 2. Advertise prefixes (as per FRR Scalability table describe in
Appendix A) by the tail end. Appendix A) by the tail end.
Poretsky, Rao, Le Roux
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Procedure Procedure
1. Establish the primary lsp on R1 required by the topology 1. Establish the primary lsp on R1 required by the topology
selected selected
Poretsky, Rao, Le Roux
Protection Mechanisms
2. Establish the backup lsp on R2 required by the selected 2. Establish the backup lsp on R2 required by the selected
topology topology
3. Verify primary and backup lsps are up and that primary is 3. Verify primary and backup lsps are up and that primary is
protected protected
4. Verify Fast Reroute protection 4. Verify Fast Reroute protection
5. Setup traffic streams as described in section 3.7 5. Setup traffic streams as described in section 3.7
6. Send IP traffic at maximum Forwarding Rate to DUT. 6. Send IP traffic at maximum Forwarding Rate to DUT.
7. Verify traffic switched over Primary LSP. 7. Verify traffic switched over Primary LSP.
8. Trigger any choice of Link failure as describe in section 8. Trigger any choice of Link failure as describe in section
3.1 3.1
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To benchmark the MPLS failover time due to Node failure events To benchmark the MPLS failover time due to Node failure events
described in section 3.1 experienced by the device under test which described in section 3.1 experienced by the device under test which
is the point of local repair (PLR). is the point of local repair (PLR).
Test Setup Test Setup
- select any one topology from section 4.5 to 4.8 - select any one topology from section 4.5 to 4.8
- select overlay technology for FRR test e.g. IGP,VPN,or VC - select overlay technology for FRR test e.g. IGP,VPN,or VC
- The DUT will also have 2 interfaces connected to the traffic - The DUT will also have 2 interfaces connected to the traffic
Poretsky, Rao, Le Roux
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generator. generator.
Test Configuration Test Configuration
Poretsky, Rao, Le Roux
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1. Configure the number of primaries on R2 and the backups on 1. Configure the number of primaries on R2 and the backups on
R2 as required by the topology selected R2 as required by the topology selected
2. Advertise prefixes (as per FRR Scalability table describe in 2. Advertise prefixes (as per FRR Scalability table describe in
Appendix A) by the tail end. Appendix A) by the tail end.
Procedure Procedure
1. Establish the primary lsp on R2 required by the topology 1. Establish the primary lsp on R2 required by the topology
selected selected
2. Establish the backup lsp on R2 required by the selected 2. Establish the backup lsp on R2 required by the selected
skipping to change at page 22, line 5 skipping to change at page 20, line 40
Reporting format. Reporting format.
12. Start traffic stream again to verify reversion when 12. Start traffic stream again to verify reversion when
protected interface comes up. Traffic loss should be 0 due protected interface comes up. Traffic loss should be 0 due
to make before break or reversion to make before break or reversion
13. Boot protected Node that was down. 13. Boot protected Node that was down.
14. Verify head-end signals new LSP and protection should be in 14. Verify head-end signals new LSP and protection should be in
place again place again
5.4. Mid-Point as PLR with Node failure 5.4. Mid-Point as PLR with Node failure
Poretsky, Rao, Le Roux
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Objective Objective
Poretsky, Rao, Le Roux
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To benchmark the MPLS failover time due to Node failure events To benchmark the MPLS failover time due to Node failure events
described in section 3.1 experienced by the device under test which described in section 3.1 experienced by the device under test which
is the point of local repair (PLR). is the point of local repair (PLR).
Test Setup Test Setup
- select any one topology from section 4.5 to 4.8 - select any one topology from section 4.5 to 4.8
- select overlay technology for FRR test as Mid-Point lsps - select overlay technology for FRR test as Mid-Point lsps
- The DUT will also have 2 interfaces connected to the traffic - The DUT will also have 2 interfaces connected to the traffic
generator. generator.
skipping to change at page 23, line 4 skipping to change at page 21, line 44
5. Setup traffic streams as described in section 3.7 5. Setup traffic streams as described in section 3.7
6. Send IP traffic at maximum Forwarding Rate to DUT. 6. Send IP traffic at maximum Forwarding Rate to DUT.
7. Verify traffic switched over Primary LSP. 7. Verify traffic switched over Primary LSP.
8. Trigger any choice of Node failure as describe in section 8. Trigger any choice of Node failure as describe in section
3.1 3.1
9. Verify that primary tunnel and prefixes gets mapped to 9. Verify that primary tunnel and prefixes gets mapped to
backup tunnels backup tunnels
10. Stop traffic stream and measure the traffic loss. 10. Stop traffic stream and measure the traffic loss.
11. Failover time is calculated as per defined in section 6, 11. Failover time is calculated as per defined in section 6,
Reporting format. Reporting format.
Poretsky, Rao, Le Roux
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12. Start traffic stream again to verify reversion when 12. Start traffic stream again to verify reversion when
protected interface comes up. Traffic loss should be 0 due protected interface comes up. Traffic loss should be 0 due
to make before break or reversion to make before break or reversion
13. Boot protected Node that was down 13. Boot protected Node that was down
Poretsky, Rao, Le Roux
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14. Verify head-end signals new LSP and protection should be in 14. Verify head-end signals new LSP and protection should be in
place again place again
5.5. MPLS FRR Forwarding Performance Test Cases 5.5. MPLS FRR Forwarding Performance Test Cases
For the following MPLS FRR Forwarding Performance Benchmarking For the following MPLS FRR Forwarding Performance Benchmarking
cases, Test the maximum PPS rate allowed by given hardware cases, Test the maximum PPS rate allowed by given hardware
5.5.1. PLR as Headend 5.5.1. PLR as Headend
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Procedure Procedure
1. Establish the primary lsp on R2 required by the 1. Establish the primary lsp on R2 required by the
topology selected topology selected
2. Establish the backup lsp on R2 required by the 2. Establish the backup lsp on R2 required by the
selected topology selected topology
3. Verify primary and backup lsps are up and that primary 3. Verify primary and backup lsps are up and that primary
is protected is protected
4. Verify Fast Reroute protection is enabled and ready 4. Verify Fast Reroute protection is enabled and ready
Poretsky, Rao, Le Roux
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5. Setup traffic streams as described in section 3.7 5. Setup traffic streams as described in section 3.7
6. Send IP traffic at maximum forwarding rate (pps) that 6. Send IP traffic at maximum forwarding rate (pps) that
the device under test supports over the primary LSP the device under test supports over the primary LSP
7. Record maximum PPS rate forwarded over primary LSP 7. Record maximum PPS rate forwarded over primary LSP
Poretsky, Rao, Le Roux
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8. Stop traffic stream 8. Stop traffic stream
9. Trigger any choice of Link failure as describe in 9. Trigger any choice of Link failure as describe in
section 3.1 section 3.1
10. Verify that primary tunnel and prefixes gets mapped to 10. Verify that primary tunnel and prefixes gets mapped to
backup tunnels backup tunnels
11. Send IP traffic at maximum forwarding rate (pps) that 11. Send IP traffic at maximum forwarding rate (pps) that
the device under test supports over the primary LSP the device under test supports over the primary LSP
12. Record maximum PPS rate forwarded over backup LSP 12. Record maximum PPS rate forwarded over backup LSP
5.5.2. PLR as Mid-point 5.5.2. PLR as Mid-point
skipping to change at page 25, line 4 skipping to change at page 23, line 38
Procedure Procedure
1. Establish the primary lsp on R1 required by the 1. Establish the primary lsp on R1 required by the
topology selected topology selected
2. Establish the backup lsp on R2 required by the 2. Establish the backup lsp on R2 required by the
selected topology selected topology
3. Verify primary and backup lsps are up and that primary 3. Verify primary and backup lsps are up and that primary
is protected is protected
4. Verify Fast Reroute protection is enabled and ready 4. Verify Fast Reroute protection is enabled and ready
5. Setup traffic streams as described in section 3.7 5. Setup traffic streams as described in section 3.7
Poretsky, Rao, Le Roux
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6. Send IP traffic at maximum forwarding rate (pps) that 6. Send IP traffic at maximum forwarding rate (pps) that
the device under test supports over the primary LSP the device under test supports over the primary LSP
7. Record maximum PPS rate forwarded over primary LSP 7. Record maximum PPS rate forwarded over primary LSP
8. Stop traffic stream 8. Stop traffic stream
Poretsky, Rao, Le Roux
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9. Trigger any choice of Link failure as describe in 9. Trigger any choice of Link failure as describe in
section 3.1 section 3.1
10. Verify that primary tunnel and prefixes gets mapped to 10. Verify that primary tunnel and prefixes gets mapped to
backup tunnels backup tunnels
11. Send IP traffic at maximum forwarding rate (pps) that 11. Send IP traffic at maximum forwarding rate (pps) that
the device under test supports over the backup LSP the device under test supports over the backup LSP
12. Record maximum PPS rate forwarded over backup LSP 12. Record maximum PPS rate forwarded over backup LSP
6. Reporting Format 6. Reporting Format
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Number of VC tunnels number of VC tunnels Number of VC tunnels number of VC tunnels
Number of BGP routes number of BGP routes Number of BGP routes number of BGP routes
Number of mid-point tunnels number of tunnels Number of mid-point tunnels number of tunnels
Number of Prefixes protected by Primary number of prefixes Number of Prefixes protected by Primary number of prefixes
Number of LSPs being protected number of LSPs Number of LSPs being protected number of LSPs
Topology being used Section number Topology being used Section number
Failure Event Event type Failure Event Event type
Benchmarks Benchmarks
Poretsky, Rao, Le Roux
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Minimum failover time milliseconds Minimum failover time milliseconds
Mean failover time milliseconds Mean failover time milliseconds
Maximum failover time milliseconds Maximum failover time milliseconds
Minimum reversion time milliseconds Minimum reversion time milliseconds
Poretsky, Rao, Le Roux
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Mean reversion time milliseconds Mean reversion time milliseconds
Maximum reversion time milliseconds Maximum reversion time milliseconds
Failover time suggested above is calculated using one of the Failover time suggested above is calculated using one of the
following 3 methods following 3 methods
1. Packet-Based Loss method (PBLM): (Number of packets 1. Packet-Based Loss method (PBLM): (Number of packets
dropped/packets per second * 1000) milliseconds. This method dropped/packets per second * 1000) milliseconds. This method
could also be referred as Rate Derived method. could also be referred as Rate Derived method.
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Note: If the primary is configured to be dynamic, and if the primary Note: If the primary is configured to be dynamic, and if the primary
is to reroute, make before break should occur from the backup that is is to reroute, make before break should occur from the backup that is
in use to a new alternate primary. If there is any packet loss seen, in use to a new alternate primary. If there is any packet loss seen,
it should be added to failover time. it should be added to failover time.
7. IANA Considerations 7. IANA Considerations
This document requires no IANA considerations. This document requires no IANA considerations.
Poretsky, Rao, Le Roux
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8. Security Considerations 8. Security Considerations
Benchmarking activities as described in this memo are limited to Benchmarking activities as described in this memo are limited to
technology characterization using controlled stimuli in a laboratory technology characterization using controlled stimuli in a laboratory
Poretsky, Rao, Le Roux
Protection Mechanisms
environment, with dedicated address space and the constraints environment, with dedicated address space and the constraints
specified in the sections above. specified in the sections above.
The benchmarking network topology will be an independent test setup The benchmarking network topology will be an independent test setup
and MUST NOT be connected to devices that may forward the test and MUST NOT be connected to devices that may forward the test
traffic into a production network, or misroute traffic to the test traffic into a production network, or misroute traffic to the test
management network. management network.
Further, benchmarking is performed on a "black-box" basis, relying Further, benchmarking is performed on a "black-box" basis, relying
solely on measurements observable external to the DUT/SUT. solely on measurements observable external to the DUT/SUT.
skipping to change at page 28, line 5 skipping to change at page 26, line 37
9. Acknowledgements 9. Acknowledgements
We would like to thank Jean Philip Vasseur for his invaluable input We would like to thank Jean Philip Vasseur for his invaluable input
to the document and Curtis Villamizar his contribution in suggesting to the document and Curtis Villamizar his contribution in suggesting
text on definition and need for benchmarking Correlated failures. text on definition and need for benchmarking Correlated failures.
Additionally we would like to thank Arun Gandhi, Amrit Hanspal, Karu Additionally we would like to thank Arun Gandhi, Amrit Hanspal, Karu
Ratnam and for their input to the document. Ratnam and for their input to the document.
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10. References 10. References
10.1. Normative References 10.1. Normative References
[MPLS-FRR-EXT] Pan, P., Atlas, A., Swallow, G., "Fast Reroute [MPLS-FRR-EXT] Pan, P., Atlas, A., Swallow, G., "Fast Reroute
Extensions to RSVP-TE for LSP Tunnels", RFC 4090. Extensions to RSVP-TE for LSP Tunnels", RFC 4090.
Poretsky, Rao, Le Roux
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10.2. Informative References 10.2. Informative References
[RFC-WORDS] Bradner, S., "Key words for use in RFCs to [RFC-WORDS] Bradner, S., "Key words for use in RFCs to
Indicate Requirement Levels", RFC 2119, March 1997. Indicate Requirement Levels", RFC 2119, March 1997.
[TERM-ID] Poretsky S., Papneja R., Karthik J., Vapiwala S., [TERM-ID] Poretsky S., Papneja R., Karthik J., Vapiwala S.,
"Benchmarking Terminology for Protection "Benchmarking Terminology for Protection
Performance", draft-ietf-bmwg-protection-term- Performance", draft-ietf-bmwg-protection-term-
02.txt, work in progress. 02.txt, work in progress.
[MPLS-FRR-EXT] Pan P., Swollow G., Atlas A., "Fast Reroute [MPLS-FRR-EXT] Pan P., Swollow G., Atlas A., "Fast Reroute
Extensions to RSVP-TE for LSP Tunnels, RFC 4090. Extensions to RSVP-TE for LSP Tunnels", RFC 4090.
[IGP-METH] S. Poretsky, B. Imhoff, "Benchmarking Methodology [IGP-METH] S. Poretsky, B. Imhoff, "Benchmarking Methodology
for IGP Data Plane Route Convergence, "draft-ietf- for IGP Data Plane Route Convergence, "draft-ietf-
bmwg-igp-dataplane-conv-meth-12.txt, work in bmwg-igp-dataplane-conv-meth-12.txt", work in
progress. progress.
11. Authors' Addresses 11. Authors' Addresses
Rajiv Papneja Rajiv Papneja
Isocore Isocore
12359 Sunrise Valley Drive, STE 100 12359 Sunrise Valley Drive, STE 100
Reston, VA 20190 Reston, VA 20190
USA USA
Phone: +1 703 860 9273 Phone: +1 703 860 9273
Poretsky, Rao, Le Roux
Protection Mechanisms
Email: rpapneja@isocore.com Email: rpapneja@isocore.com
Samir Vapiwala Samir Vapiwala
Cisco System Cisco System
300 Beaver Brook Road 300 Beaver Brook Road
Boxborough, MA 01719 Boxborough, MA 01719
USA USA
Phone: +1 978 936 1484 Phone: +1 978 936 1484
Email: svapiwal@cisco.com Email: svapiwal@cisco.com
Poretsky, Rao, Le Roux
Protection Mechanisms
Jay Karthik Jay Karthik
Cisco System Cisco Systems,
300 Beaver Brook Road 300 Beaver Brook Road
Boxborough, MA 01719 Boxborough, MA 01719
USA USA
Phone: +1 978 936 0533 Phone: +1 978 936 0533
Email: jkarthik@cisco.com Email: jkarthik@cisco.com
Scott Poretsky Scott Poretsky
Reef Point Systems Reef Point Systems
8 New England Executive Park 8 New England Executive Park
Burlington, MA 01803 Burlington, MA 01803
USA USA
Phone: + 1 781 395 5090 Phone: + 1 781 395 5090
EMail: sporetsky@reefpoint.com EMail: sporetsky@reefpoint.com
Shankar Rao Shankar Rao
Qwest Communications, Qwest Communications,
950 17th Street 950 17th Street
Suite 1900 Suite 1900
Qwest Communications
Denver, CO 80210 Denver, CO 80210
USA USA
Phone: + 1 303 437 6643 Phone: + 1 303 437 6643
Email: shankar.rao@qwest.com Email: shankar.rao@qwest.com
Jean-Louis Le Roux Jean-Louis Le Roux
France Telecom France Telecom
2 av Pierre Marzin 2 av Pierre Marzin
22300 Lannion 22300 Lannion
Poretsky, Rao, Le Roux
Protection Mechanisms
France France
Phone: 00 33 2 96 05 30 20 Phone: 00 33 2 96 05 30 20
Email: jeanlouis.leroux@orange-ft.com Email: jeanlouis.leroux@orange-ft.com
Poretsky, Rao, Le Roux
Protection Mechanisms
Full Copyright Statement Full Copyright Statement
Copyright (C) The IETF Trust (2007). Copyright (C) The IETF Trust (2008).
This document is subject to the rights, licenses and restrictions This document is subject to the rights, licenses and restrictions
contained in BCP 78, and except as set forth therein, the authors contained in BCP 78, and except as set forth therein, the authors
retain all their rights. retain all their rights.
Disclaimer This document and the information contained herein are provided on an
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on an "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS
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Protection Mechanisms
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The IETF invites any interested party to bring to its attention any The IETF invites any interested party to bring to its attention any
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Acknowledgement Acknowledgment
Funding for the RFC Editor function is currently provided by the Funding for the RFC Editor function is provided by the IETF
Internet Society. Administrative Support Activity (IASA).
Poretsky, Rao, Le Roux
Protection Mechanisms
Appendix A: Fast Reroute Scalability Table Appendix A: Fast Reroute Scalability Table
This section provides the recommended numbers for evaluating the This section provides the recommended numbers for evaluating the
scalability of fast reroute implementations. It also recommends the scalability of fast reroute implementations. It also recommends the
typical numbers for IGP/VPNv4 Prefixes, LSP Tunnels and VC entries. typical numbers for IGP/VPNv4 Prefixes, LSP Tunnels and VC entries.
Based on the features supported by the device under test, appropriate Based on the features supported by the device under test, appropriate
scaling limits can be used for the test bed. scaling limits can be used for the test bed.
A 1. FRR IGP Table A 1. FRR IGP Table
skipping to change at page 32, line 4 skipping to change at page 30, line 31
1 500 1 500
1 1000 1 1000
1 2000 1 2000
1 5000 1 5000
2(Load Balance) 100 2(Load Balance) 100
2(Load Balance) 500 2(Load Balance) 500
2(Load Balance) 1000 2(Load Balance) 1000
2(Load Balance) 2000 2(Load Balance) 2000
2(Load Balance) 5000 2(Load Balance) 5000
100 100 100 100
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500 500 500 500
1000 1000 1000 1000
2000 2000 2000 2000
A 2. FRR VPN Table A 2. FRR VPN Table
No of Headend VPNv4 Prefixes No of Headend VPNv4 Prefixes
TE LSPs TE LSPs
Poretsky, Rao, Le Roux
Protection Mechanisms
1 100 1 100
1 500 1 500
1 1000 1 1000
1 2000 1 2000
1 5000 1 5000
1 10000 1 10000
1 20000 1 20000
1 Max 1 Max
2(Load Balance) 100 2(Load Balance) 100
2(Load Balance) 500 2(Load Balance) 500
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No of Mid-point TE LSPs could be configured at the following No of Mid-point TE LSPs could be configured at the following
recommended levels recommended levels
100 100
500 500
1000 1000
2000 2000
Max supported number Max supported number
A 4. FRR VC Table A 4. FRR VC Table
Poretsky, Rao, Le Roux
Protection Mechanisms
No of Headend VC entries No of Headend VC entries
TE LSPs TE LSPs
1 100 1 100
1 500 1 500
1 1000 1 1000
1 2000 1 2000
1 Max 1 Max
Poretsky, Rao, Le Roux
Protection Mechanisms
100 100 100 100
500 500 500 500
1000 1000 1000 1000
2000 2000 2000 2000
Appendix B: Abbreviations Appendix B: Abbreviations
BFD - Bidirectional Fault Detection BFD - Bidirectional Fault Detection
BGP - Border Gateway protocol BGP - Border Gateway protocol
CE - Customer Edge CE - Customer Edge
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136 lines changed or deleted 123 lines changed or added

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