draft-ietf-mpls-ldp-survey2002-00.txt   rfc5038.txt 
Network Working Group Bob Thomas Network Working Group B. Thomas
Internet Draft Cisco Systems, Inc. Request for Comments: 5038 Cisco Systems, Inc.
Category: Informational L. Andersson
Loa Andersson
Acreo AB Acreo AB
October 2007
October 2005 The Label Distribution Protocol (LDP) Implementation Survey Results
LDP Implementation Survey Results
draft-ietf-mpls-ldp-survey2002-00.txt
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Abstract Abstract
Multiprotocol Label Switching (MPLS) is a method for forwarding Multiprotocol Label Switching (MPLS), described in RFC 3031, is a
packets that uses short, fixed-length values carried by packets, method for forwarding packets that uses short, fixed-length values
called labels, to determine packet nexthops [RFC3031]). A carried by packets, called labels, to determine packet next hops. A
fundamental concept in MPLS is that two Label Switching Routers fundamental concept in MPLS is that two Label Switching Routers
(LSRs) must agree on the meaning of the labels used to forward (LSRs) must agree on the meaning of the labels used to forward
traffic between and through them. This common understanding is traffic between and through them. This common understanding is
achieved by using a set of procedures, called a label distribution achieved by using a set of procedures, called a Label Distribution
protocol, by which one LSR informs another of label bindings it has Protocol (as described in RFC 3036) , by which one LSR informs
made. One such protocol called LDP [RFC3036] is used by LSRs to another of label bindings it has made. One such protocol, called
distribute labels to support MPLS forwarding along normally routed LDP, is used by LSRs to distribute labels to support MPLS forwarding
paths. This document reports on a survey of LDP implementations along normally routed paths. This document reports on a survey of
conducted in August 2002 as part of the process of advancing LDP from LDP implementations conducted in August 2002 as part of the process
proposed to draft standard. of advancing LDP from Proposed to Draft Standard.
Table of Contents Table of Contents
1 Introduction ....................................... 3 1. Introduction ....................................................2
1.1 The LDP Survey Form ................................ 3 1.1. The LDP Survey Form ........................................2
1.2 LDP Survey Highlights .............................. 4 1.2. LDP Survey Highlights ......................................3
2 Survey Results for LDP Features .................... 5 2. Survey Results for LDP Features .................................4
3 References ......................................... 8 3. Security Considerations .........................................7
4 Author Information ................................. 8 4. References ......................................................7
Appendix A Full LDP Survey Results ............................ 9 Appendix A. Full LDP Survey Results ................................8
Appendix B LDP Implementation Survey Form ..................... 14 Appendix B. LDP Implementation Survey Form ........................13
Full Copyright Notice .............................. 22
1. Introduction 1. Introduction
Multiprotocol Label Switching (MPLS) is a method for forwarding
packets that uses short fixed-length values carried by packets,
called labels, to determine packet next hops [RFC3031]. A
fundamental MPLS concept is that two Label Switching Routers (LSRs)
must agree on the meaning of the labels used to forward traffic
between and through them. This common understanding is achieved by
using a set of procedures by which one LSR informs another of label
bindings it has made.
Label Distribution Protocol (LDP) specifies a set of procedures LSRs
use to distribute labels to support MPLS forwarding along normally
routed paths. LDP was specified originally by [RFC3036]. The
current LDP specification is [RFC5036], which obsoletes [RFC3036].
[RFC3037] describes the applicability of LDP.
This document reports on a survey of LDP implementations conducted in This document reports on a survey of LDP implementations conducted in
August 2002 as part of the process of advancing LDP from proposed to August 2002 as part of the process of advancing LDP from Proposed to
draft standard. Draft standard.
This section highlights some of the survey results. Section 2 This section highlights some of the survey results. Section 2
presents the survey results for LDP features, and Appendix A presents presents the survey results for LDP features, and Appendix A presents
the survey results in full. Appendix B contains a copy of the survey the survey results in full. Appendix B contains a copy of the survey
form. form.
1.1. The LDP Survey Form 1.1. The LDP Survey Form
The LDP implementation survey requested the following information The LDP implementation survey requested the following information
about LDP implementation: about LDP implementation:
- Responding organization. Provisions were made to accommondate - Responding organization. Provisions were made to accommodate
organizations that wished to respond anonymously. organizations that wished to respond anonymously.
- The status, availability and origin of the LDP implementation. - The status, availability, and origin of the LDP implementation.
- The LDP features implemented and for each whether it was tested - The LDP features implemented and for each whether it was tested
against an independent implementation. The survey form listed each against an independent implementation. The survey form listed
LDP feature defined by RFC3036 and requested one of the following each LDP feature defined by [RFC3036] and requested one of the
as the status of the feature: following as the status of the feature:
t: Tested against another independent implementation; t: Tested against another independent implementation
y: Implemented but not tested against independent y: Implemented but not tested against independent
implementation; implementation
n: Not implemented; n: Not implemented
x: Not applicable to this type of implementation; x: Not applicable to this type of implementation
In addition, for the 'n' status, the responder could optionally
In addition for the 'n' status the responder could optionally
provide the following additional information: provide the following additional information:
s: RFC specification inadequate, unclear, or confusing; s: RFC specification inadequate, unclear, or confusing
u: Utility of feature unclear; u: Utility of feature unclear
r: Feature not required for feature set implemented; r: Feature not required for feature set implemented
This document uses the following conventions for reporting survey This document uses the following conventions for reporting survey
results for a feature: results for a feature:
At By Cn indicates: At By Cn indicates:
- A responders implemented the feature and tested it against - A responders implemented the feature and tested it against
another independent implementation (t); another independent implementation (t)
- B responders implemented the feature but have not tested it - B responders implemented the feature but have not tested it
against an independent implmented (y); against an independent implemented (y)
- C responders did not implement the the feature (n); - C responders did not implement the feature (n)
(Ds Eu Fr) indicates optional responses: (Ds Eu Fr) indicates optional responses:
- D responders thought the RFC3036 specification of the feature - D responders thought the RFC3036 specification of the feature
inadequate, unclear, or confusing (s). inadequate, unclear, or confusing (s).
- E responders thought the utility of the feature unclear (u). - E responders thought the utility of the feature unclear (u).
- F responders considered the feature not required for the feature - F responders considered the feature not required for the
set implemented (combines x and r). feature set implemented (combines x and r).
1.2. LDP Survey Highlights 1.2. LDP Survey Highlights
This section presents some highlights from the implementatation This section presents some highlights from the implementation survey.
survey.
- There were 12 responses to the survey, 2 of which were anonymous. - There were 12 responses to the survey, 2 of which were
At the time of the survey 10 of the implementation were available anonymous. At the time of the survey, 10 of the implementation
as products and 2 were in beta test. Eleven of the were available as products and 2 were in beta test. Eleven of
implementations were available for sale; the remaining the implementations were available for sale; the remaining
implementation had been done by a company no longer in business. implementation had been done by a company no longer in
business.
- Seven implementations were independently written from the RFC3036 - Seven implementations were independently written from the RFC
specification. Four implementations combined purchased or free 3036 specification. Four implementations combined purchased or
code with code written by the responder. free code with code written by the responder.
One of the implementations was fully purchased code ported to the One of the implementations was fully purchased code ported to
vendor's platform. the vendor's platform.
- Every LDP feature in the survey questionnaire was implemented by - Every LDP feature in the survey questionnaire was implemented
at least 2 respondents. by at least 2 respondents.
- Each of the 8 LDP Label Distribution Modes implemented and - Each of the 8 LDP Label Distribution Modes implemented and
tested; tested:
8t 2y 2n DU, Ord Cntl, Lib reten
7t 1y 4n DU, Ind Cntl, Lib reten
7t 1y 4n DoD Ord Cntl, Cons reten
6t 1y 5n DoD, Ind Cntl, Cons reten
6t 1y 5n DU, Ord Cntl, Cons reten
6t 0y 6n DU, Ind Cntl, Cons reten
4t 3y 5n DoD, Ord Cntl, Lib reten
4t 2y 6n DoD, Ind Cntl, Lib reten
8t 2y 2n DU, Ord Cntl, Lib Reten
7t 1y 4n DU, Ind Cntl, Lib Reten
7t 1y 4n DoD Ord Cntl, Cons Reten
6t 1y 5n DoD, Ind Cntl, Cons Reten
6t 1y 5n DU, Ord Cntl, Cons Reten
6t 0y 6n DU, Ind Cntl, Cons Reten
4t 3y 5n DoD, Ord Cntl, Lib Reten
4t 2y 6n DoD, Ind,Cntl, Lib Reten
- Platform and Interface Label Spaces were both widely supported. - Platform and Interface Label Spaces were both widely supported.
12t 0y 0n Per Platform 12t 0y 0n Per platform
7t 1y 4n Per Interface 7t 1y 4n Per interface
- LDP Basic and Targeted Sessions were both widely supported. - LDP Basic and Targeted Sessions were both widely supported.
12t 0y 0n Basic/Directly Connected 12t 0y 0n Basic/Directly Connected
11t 1y 0n Targeted 11t 1y 0n Targeted
- The TCP MD5 Option for LDP session TCP connections was not widely - The TCP MD5 Option for LDP session TCP connections was not
implemented. widely implemented.
3t 1y 8n 3t 1y 8n
2. Survey Results for LDP Features 2. Survey Results for LDP Features
This section presents the survey results for LDP features using the This section presents the survey results for LDP features using the
notational convention described in Section 1.2. It omits the notational convention described in Section 1.2. It omits the
optional status responses (s, u, r); complete results may be found in optional status responses (s, u, r); complete results may be found in
Appendix A. Appendix A.
skipping to change at page 5, line 43 skipping to change at page 5, line 8
Label Spaces Label Spaces
12t 0y 0n Per platform 12t 0y 0n Per platform
7t 1y 4n Per interface 7t 1y 4n Per interface
LDP Discovery LDP Discovery
12t 0y 0n Basic 12t 0y 0n Basic
11t 1y 0n Targeted 11t 1y 0n Targeted
LDP Sessions LDP Sessions
12t 0y 0n Directly Connected 12t 0y 0n Directly Connected
11t 1y 0n Targeted 11t 1y 0n Targeted
LDP Modes LDP Modes
7t 1y 4n DU, Ind cntl, Lib reten 7t 1y 4n DU, Ind Cntl, Lib reten
8t 2y 2n DU, Ord cntl, Lib reten 8t 2y 2n DU, Ord Cntl, Lib reten
6t 0y 6n DU, Ind cntl, Cons reten 6t 0y 6n DU, Ind Cntl, Cons reten
6t 1y 5n DU, Ord cntl Cons reten 6t 1y 5n DU, Ord Cntl Cons reten
4t 2y 6n DoD, Ind cntl, Lib reten 4t 2y 6n DoD, Ind Cntl, Lib reten
4t 3y 5n DoD, Ord cntl, Lib reten 4t 3y 5n DoD, Ord Cntl, Lib reten
6t 1y 5n DoD, Ind cntl, Cons reten 6t 1y 5n DoD, Ind Cntl, Cons reten
7t 1y 4n DoD, Ord cntl, Cons reten 7t 1y 4n DoD, Ord Cntl, Cons reten
Loop Detection Loop Detection
9t 2y 1n 9t 2y 1n
TCP MD5 Option TCP MD5 Option
3t 1y 8n 3t 1y 8n
LDP TLVs LDP TLVs
7t 4y 0n U-bit 7t 4y 0n U-bit
7t 4y 0n F-bit 7t 4y 0n F-bit
12t 0y 0n FEC TLV 12t 0y 0n FEC TLV
6t 5y 1n Wildcard 6t 5y 1n Wildcard
12t 0y 0n Prefix 12t 0y 0n Prefix
skipping to change at page 7, line 42 skipping to change at page 7, line 6
7t 5y 0n Bad Message Length 7t 5y 0n Bad Message Length
7t 4y 0n Unknown TLV 7t 4y 0n Unknown TLV
7t 5y 0n Bad TLV length 7t 5y 0n Bad TLV length
7t 5y 0n Malformed TLV Value 7t 5y 0n Malformed TLV Value
11t 1y 0n Hold Timer Expired 11t 1y 0n Hold Timer Expired
11t 1y 0n Shutdown 11t 1y 0n Shutdown
10t 1y 1n Loop Detected 10t 1y 1n Loop Detected
7t 5y 0n Unknown FEC 7t 5y 0n Unknown FEC
11t 1y 0n No Route 11t 1y 0n No Route
9t 3y 0n No Label Resources 9t 3y 0n No Label Resources
8t 3y 1n Label Resources Avaliable 8t 3y 1n Label Resources Available
Session Rejected Session Rejected
7t 5y 0n No Hello 7t 5y 0n No Hello
9t 2y 1n Param Advert Mode 9t 2y 1n Param Advert Mode
9t 2y 1n Param PDUMax Len 9t 2y 1n Param PDUMax Len
8t 3y 1n Param Label Range 8t 3y 1n Param Label Range
7t 5y 0n Bad KA Time 7t 5y 0n Bad KA Time
11t 1y 0n KeepAlive Timer Expired 11t 1y 0n KeepAlive Timer Expired
9t 1y 2n Label Request Aborted 9t 1y 2n Label Request Aborted
6t 5y 1n Missing Message Params 6t 5y 1n Missing Message Params
7t 5y 0n Unsupported Addr Family 7t 5y 0n Unsupported Addr Family
7t 5y 0n Internal Error 7t 5y 0n Internal Error
3. References 3. Security Considerations
[RFC3031] E. Rosen, A. Viswanathan, R. Callon, "Multiprotocol Label This document is a survey of existing LDP implementations; it does
Switching Architecture", RFC3031, January 2001. not specify any protocol behavior. Thus, security issues introduced
by the document are not discussed.
[RFC3036] L. Andersson, P. Doolan, N. Feldman, A. Fredette, B. 4. Informative References
Thomas, "LDP Specification", RFC3036, January 2001.
[RFC3037] B. Thomas, E. Gray, "LDP Applicability", RFC3037, January [RFC3031] Rosen, E., Viswanathan, A., and R. Callon, "Multiprotocol
2001. Label Switching Architecture", RFC 3031, January 2001.
4. Author Information [RFC3036] Andersson, L., Doolan, P., Feldman, N., Fredette, A., and
B. Thomas, "LDP Specification", RFC 3036, January 2001.
Bob Thomas [RFC3037] Thomas, B. and E. Gray, "LDP Applicability", RFC 3037,
Cisco Systems, Inc. January 2001.
1414 Massachusetts Ave.
Boxborough MA 01719
Loa Andersson [RFC5036] Andersson, L., Ed., Minei, I., Ed., and B. Thomas, Ed.,
Acreo AB "LDP Specification", RFC 5036, October 2007.
Isafjordsgatan 22
Kista, Sweden
Appendix A. Full LDP Survey Results Appendix A. Full LDP Survey Results
LDP Implementation Survey Form [V 1.0] LDP Implementation Survey Form (V 1.0)
======================================================================= =======================================================================
A. General information. A. General Information
Responders: Responders:
Anonymous: 2 Anonymous: 2
Public: 10 Public: 10
Agilent Technologies Agilent Technologies
Celox Networks, Inc. Celox Networks, Inc.
Cisco Systems, Inc. Cisco Systems, Inc.
Data Connection Ltd. Data Connection Ltd.
NetPlane Systems, Inc NetPlane Systems, Inc
Trillium, An Intel Company
Redback Networks Redback Networks
Riverstone Networks Riverstone Networks
Trillium, An Intel Company
Vivace Networks, Inc. Vivace Networks, Inc.
Wipro Technologies Wipro Technologies
======================================================================= =======================================================================
B. LDP Implementation Status, Availability, Origin B. LDP Implementation Status, Availability, Origin
Status: Status:
[ ] Development [ ] Development
[ ] Alpha [ ] Alpha
[ 2] Beta [ 2] Beta
[10] Product [10] Product
[ ] Other (describe): [ ] Other (describe):
Availability Availability:
[ ] Public and free [ ] Public and free
[ ] Only to selected organizations/companies but free [ ] Only to selected organizations/companies but free
[11] On sale. [11] On sale
[ ] For internal company use only [ ] For internal company use only
[ 1] Other: [ 1] Other:
Implementation based on: (check all that apply) Implementation based on: (check all that apply)
[ 1] Purchased code [ 1] Purchased code
(please list source if possible) (please list source if possible)
[ ] Free code [ ] Free code
(please list source if possible) (please list source if possible)
[ 7] Internal implementation [ 7] Internal implementation
(no outside code, just from specs) (no outside code, just from specs)
[ 4] Internal implementation on top of purchased [ 4] Internal implementation on top of purchased
or free code or free code
======================================================================= =======================================================================
C. LDP Feature Survey. C. LDP Feature Survey
For each features listed, please indicate the Status of the For each feature listed, please indicate the status of the
implementation using one of the following: implementation using one of the following:
't' tested against another independent implementation 't' tested against another independent implementation
'y' implemented but not tested against independent 'y' implemented but not tested against independent
implementation implementation
'n' not implemented 'n' not implemented
'x' not applicable to this type of implementation 'x' not applicable to this type of implementation
Optional: For 'n' status, indicate reason for not implementing Optional: For 'n' status, indicate reason for not implementing
using one of the following: using one of the following:
's' RFC specification inadequate, unclear, or confusing 's' RFC specification inadequate, unclear, or confusing
'u' utility of feature unclear 'u' utility of feature unclear
'r' feature not required for feature set implemented 'r' feature not required for feature set implemented
Feature RFC3036 Section(s) Feature RFC3036 Section(s)
Survey Result Survey Result
Interface types 2.2.1, 2.5.3, 2.8.2, 3,4,2 Interface types 2.2.1, 2.5.3,
2.8.2, 3.4.2
12t 0y 0n Packet 12t 0y 0n Packet
2t 3y 7n(3r 1x) Frame Relay 2t 3y 7n(3r 1x) Frame Relay
6t 2y 4n(3r) ATM 6t 2y 4n(3r) ATM
Label Spaces 2.2.1, 2.2.2 Label Spaces 2.2.1, 2.2.2
12t 0y 0n Per platform 12t 0y 0n Per platform
7t 1y 4n(4r) Per interface 7t 1y 4n(4r) Per interface
LDP Discovery 2.4 LDP Discovery 2.4
12t 0y 0n Basic 2.4.1 12t 0y 0n Basic 2.4.1
11t 1y 0n Targeted 2.4.2 11t 1y 0n Targeted 2.4.2
LDP Sessions 2.2.3 LDP Sessions 2.2.3
12t 0y 0n Directly Connected -- 12t 0y 0n Directly Connected --
11t 1y 0n Targeted 2.3 11t 1y 0n Targeted 2.3
LDP Modes 2.6 LDP Modes 2.6
7t 1y 4n(2u 1r) DU, Ind cntl, Lib reten 2.6 7t 1y 4n(2u 1r) DU, Ind cntl, Lib reten 2.6
8t 2y 2n(1r) DU, Ord cntl, Lib reten 2.6 8t 2y 2n(1r) DU, Ord cntl, Lib reten 2.6
6t 0y 6n(2u 2r) DU, Ind cntl, Cons reten 2.6 6t 0y 6n(2u 2r) DU, Ind cntl, Cons reten 2.6
6t 1y 5n(1u 2r) DU, Ord cntl Cons reten 2.6 6t 1y 5n(1u 2r) DU, Ord cntl, Cons reten 2.6
4t 2y 6n(2u 2r) DoD, Ind cntl, Lib reten 2.6 4t 2y 6n(2u 2r) DoD, Ind cntl, Lib reten 2.6
4t 3y 5n(2r) DoD, Ord cntl, Lib reten 2.6 4t 3y 5n(2r) DoD, Ord cntl, Lib reten 2.6
6t 1y 5n(2u 2r) DoD, Ind cntl, Cons reten 2.6 6t 1y 5n(2u 2r) DoD, Ind cntl, Cons reten 2.6
7t 1y 4n(1u 2r) DoD, Ord cntl, Cons reten 2.6 7t 1y 4n(1u 2r) DoD, Ord cntl, Cons reten 2.6
Loop Detection 2.8 Loop Detection 2.8
9t 2y 1n 9t 2y 1n
TCP MD5 Option 2.9 TCP MD5 Option 2.9
3t 1y 8n(1u 1r 1x) 3t 1y 8n(1u 1r 1x)
LDP TLVs 3.3, 3.4, throughout LDP TLVs 3.3, 3.4, throughout
7t 4y 0n(1 noreply) U-bit 3.3 7t 4y 0n(1 noreply) U-bit 3.3
skipping to change at page 11, line 48 skipping to change at page 11, line 50
6t 2y 4n(1r 1x) D-bit 3.5.3 6t 2y 4n(1r 1x) D-bit 3.5.3
6t 2y 4n(1r 1x) ATM Label Range 3.5.3 6t 2y 4n(1r 1x) ATM Label Range 3.5.3
Component Component
2t 3y 7n(1u 1r 2x) FR Session Param TLV 3.5.3 2t 3y 7n(1u 1r 2x) FR Session Param TLV 3.5.3
M values M values
2t 3y 7n(1u 1r 2x) 0 No Merge 3.5.3 2t 3y 7n(1u 1r 2x) 0 No Merge 3.5.3
2t 3y 7n 1 Merge 3.5.3 2t 3y 7n 1 Merge 3.5.3
2t 3y 7n(1u 1r 2x) D-bit 3.5.3 2t 3y 7n(1u 1r 2x) D-bit 3.5.3
2t 3y 7n(1u 1r 2x) FR Label Range 3.5.3 2t 3y 7n(1u 1r 2x) FR Label Range 3.5.3
Component Component
10t 0y 2n Label Request Msg ID TLV 3.5.7 10t 0y 2n Label Request Msg Id TLV 3.5.7
2t 5y 5n(1u 1r) Vendor-Private TLV 3.6.1.1 2t 5y 5n(1u 1r) Vendor-Private TLV 3.6.1.1
1t 5y 6n(2r) Experimental TLV 3.6.2 1t 5y 6n(2r) Experimental TLV 3.6.2
LDP Messages 3.5, throughout LDP Messages 3.5, throughout
12t 0y 0n Notification Msg 3.5.1 12t 0y 0n Notification Msg 3.5.1
12t 0y 0n Hello Msg 3.5.2 12t 0y 0n Hello Msg 3.5.2
12t 0y 0n Initialization Msg 3.5.3 12t 0y 0n Initialization Msg 3.5.3
12t 0y 0n KeepAlive Msg 3.5.4 12t 0y 0n KeepAlive Msg 3.5.4
12t 0y 0n Address Msg 3.5.5 12t 0y 0n Address Msg 3.5.5
12t 0y 0n Address Withdraw Msg 3.5.6 12t 0y 0n Address Withdraw Msg 3.5.6
12t 0y 0n Label Mapping Msg 3.5.7 12t 0y 0n Label Mapping Msg 3.5.7
skipping to change at page 12, line 33 skipping to change at page 12, line 34
2t 5y 5n(1u 1r) Vendor-Private Msg 3.6.1.2 2t 5y 5n(1u 1r) Vendor-Private Msg 3.6.1.2
1t 5y 6n(2r) Experimental Msg 3.6.2 1t 5y 6n(2r) Experimental Msg 3.6.2
LDP Status Codes 3.4.6 LDP Status Codes 3.4.6
9t 3y 0n Success 3.4.6, 3.9 9t 3y 0n Success 3.4.6, 3.9
8t 4y 0n Bad LDP Id 3.5.1.2.1 8t 4y 0n Bad LDP Id 3.5.1.2.1
7t 5y 0n Bad Ptcl Version 3.5.1.2.1 7t 5y 0n Bad Ptcl Version 3.5.1.2.1
7t 5y 0n Bad PDU Length 3.5.1.2.1 7t 5y 0n Bad PDU Length 3.5.1.2.1
7t 5y 0n Unknown Message Type 3.5.1.2.1 7t 5y 0n Unknown Message Type 3.5.1.2.1
7t 5y 0n Bad Message Length 3.5.1.2.1 7t 5y 0n Bad Message Length 3.5.1.2.1
7t 4y 0n(1 noreply) Unknown TLV 3.5.1.2.2 7t 4y 0n(1 noreply) Unknown TLV 3.5.1.2.2
7t 5y 0n Bad TLV length 3.5.1.2.2 7t 5y 0n Bad TLV Length 3.5.1.2.2
7t 5y 0n Malformed TLV Value 3.5.1.2.2 7t 5y 0n Malformed TLV Value 3.5.1.2.2
11t 1y 0n Hold Timer Expired 3.5.1.2.3 11t 1y 0n Hold Timer Expired 3.5.1.2.3
11t 1y 0n Shutdown 3.5.1.2.4 11t 1y 0n Shutdown 3.5.1.2.4
10t 1y 1n Loop Detected 3.4.5.1.2, 3.5.8.1 10t 1y 1n Loop Detected 3.4.5.1.2, 3.5.8.1
7t 5y 0n Unknown FEC 3.4.1.1 7t 5y 0n Unknown FEC 3.4.1.1
11t 1y 0n No Route 3.5.8.1 11t 1y 0n No Route 3.5.8.1
9t 3y 0n No Label Resources 3.5.8.1 9t 3y 0n No Label Resources 3.5.8.1
8t 3y 1n Label Resources Avaliable 3.5.8.1 8t 3y 1n Label Resources Available 3.5.8.1
Session Rejected 2.5.3, 3.5.3 Session Rejected 2.5.3, 3.5.3
7t 5y 0n No Hello 2.5.3, 3.5.3 7t 5y 0n No Hello 2.5.3, 3.5.3
9t 2y 1n Param Advert Mode 2.5.3, 3.5.3 9t 2y 1n Param Advert Mode 2.5.3, 3.5.3
9t 2y 1n Param PDUMax Len 2.5.3, 3.5.3 9t 2y 1n Param PDUMax Len 2.5.3, 3.5.3
8t 3y 1n Param Label Range 2.5.3, 3.5.3 8t 3y 1n Param Label Range 2.5.3, 3.5.3
7t 5y 0n Bad KA Time 3.5.1.2.5, 3.5.3 7t 5y 0n Bad KA Time 3.5.1.2.5, 3.5.3
11t 1y 0n KeepAlive Timer Expired 2.5.6, 3.5.1.2.3 11t 1y 0n KeepAlive Timer Expired 2.5.6, 3.5.1.2.3
9t 1y 2n Label Request Aborted 3.5.9.1 9t 1y 2n Label Request Aborted 3.5.9.1
6t 5y 1n Missing Message Params 3.5.1.2.1 6t 5y 1n Missing Message Params 3.5.1.2.1
7t 5y 0n Unsupported Addr Family 3.4.1.1, 3.5.5.1 7t 5y 0n Unsupported Addr Family 3.4.1.1, 3.5.5.1
7t 5y 0n Internal Error 3.5.1.2.7 7t 5y 0n Internal Error 3.5.1.2.7
Appendix B. LDP Implementation Survey Form Appendix B. LDP Implementation Survey Form
LDP Implementation Survey Form [V 1.0] LDP Implementation Survey Form (V 1.0)
The purpose of this form is to gather information about The purpose of this form is to gather information about implementations
implementations of LDP as defined by RFC3036. The information is of LDP as defined by RFC 3036. The information is being requested as
being requested as part of the process of advancing LDP from Proposed part of the process of advancing LDP from Proposed to Draft Standard.
to Draft Standard.
The form is patterned after the implementation report form used for The form is patterned after the implementation report form used for
HTTP/1.1; see: HTTP/1.1; see:
http://www.ietf.org/IESG/Implementations/http1.1-implementations.txt http://www.ietf.org/IESG/Implementations/http1.1-implementations.txt
======================================================================= =======================================================================
A. General information. A. General Information
Please provide the following information. Please provide the following information.
---------------------------------------------------------------- ----------------------------------------------------------------
Organization: Organization:
Organization url(s): Organization url(s):
---------------------------------------------------------------- ----------------------------------------------------------------
skipping to change at page 15, line 31 skipping to change at page 15, line 6
[ ] Free code [ ] Free code
(please list source if possible) (please list source if possible)
[ ] Internal implementation [ ] Internal implementation
(no outside code, just from specs) (no outside code, just from specs)
[ ] Internal implementation on top of purchased [ ] Internal implementation on top of purchased
or free code or free code
List portions from external source: List portions from external source:
List portions developed internally: List portions developed internally:
======================================================================= =======================================================================
C. LDP Feature Survey. C. LDP Feature Survey
For each features listed, please indicate the Status of the implementation For each feature listed, please indicate the status of the
using one of the following: implementation using one of the following:
't' tested against another independent implementation 't' tested against another independent implementation
'y' implemented but not tested against independent implementation 'y' implemented but not tested against independent implementation
'n' not implemented 'n' not implemented
'-' not applicable to this type of implementation '-' not applicable to this type of implementation
Optional: For 'n' status, indicate reason for not implementing using Optional: For 'n' status, indicate reason for not implementing using
one of the following: one of the following:
's' RFC specification inadequate, unclear, or confusing 's' RFC specification inadequate, unclear, or confusing
'u' utility of feature unclear 'u' utility of feature unclear
'r' feature not required for feature set implemented 'r' feature not required for feature set implemented
------------------+-----------------------------+-------------------------
------------------+-----------------------------+-----------------------
| | Status | | Status
| | (one of t, y, n, -; if n, | | (one of t, y, n, -;
Feature | RFC3036 Section(s) | optionally one of s, u, r) | | if n, optionally
==================+=============================+========================= Feature | RFC 3036 Section(s) | one of s, u, r)
Interface types | 2.2.1, 2.5.3, 2.8.2, 3,4,2 ==================+=============================+=======================
----------------+-----------------------------+------------------------- Interface types | 2.2.1, 2.5.3, 2.8.2, 3.4.2
----------------+-----------------------------+-----------------------
Packet | | Packet | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Frame Relay | | Frame Relay | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
ATM | | ATM | |
==================+=============================+========================= ==================+=============================+=======================
Label Spaces | 2.2.1, 2.2.2 Label Spaces | 2.2.1, 2.2.2
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Per platform | | Per platform | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Per interface | | Per interface | |
==================+=============================+========================= ==================+=============================+=======================
LDP Discovery | 2.4 LDP Discovery | 2.4
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Basic | 2.4.1 | Basic | 2.4.1 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Targeted | 2.4.2 | Targeted | 2.4.2 |
------------------+-----------------------------+-------------------------
------------------+-----------------------------+-----------------------
LDP Sessions | 2.2.3 LDP Sessions | 2.2.3
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Directly | -- | Directly | -- |
Connected | | Connected | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Targeted | 2.3 | Targeted | 2.3 |
==================+=============================+========================= ==================+=============================+=======================
LDP Modes | 2.6 LDP Modes | 2.6
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
DU, Ind cntl, | 2.6 | DU, Ind cntl, | 2.6 |
Lib retention | | Lib retention | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
DU, Ord cntl, | 2.6 | DU, Ord cntl, | 2.6 |
Lib retention | | Lib retention | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
DU, Ind cntl, | 2.6 | DU, Ind cntl, | 2.6 |
Cons retention | | Cons retention | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
DU, Ord cntl, | 2.6 | DU, Ord cntl, | 2.6 |
Cons retention | | Cons retention | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
DoD, Ind cntl, | 2.6 | DoD, Ind cntl, | 2.6 |
Lib retention | | Lib retention | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
DoD, Ord cntl, | 2.6 | DoD, Ord cntl, | 2.6 |
Lib retention | | Lib retention | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
DoD, Ind cntl, | 2.6 | DoD, Ind cntl, | 2.6 |
Cons retention | | Cons retention | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
DoD, Ord cntl, | 2.6 | DoD, Ord cntl, | 2.6 |
Cons retention | | Cons retention | |
==================+=============================+========================= ==================+=============================+=======================
Loop Detection | 2.8 | Loop Detection | 2.8 |
==================+=============================+========================= ==================+=============================+=======================
TCP MD5 Option | 2.9 | TCP MD5 Option | 2.9 |
==================+=============================+========================= ==================+=============================+=======================
LDP TLVs | 3.3, 3.4, throughout LDP TLVs | 3.3, 3.4, throughout
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
U-bit | 3.3 | U-bit | 3.3 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
F-bit | 3.3 | F-bit | 3.3 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
FEC | 1., 2.1, 3.4.1 | FEC | 1., 2.1, 3.4.1 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Wildcard | 3.4.1 | Wildcard | 3.4.1 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Prefix | 2.1, 3.4.1 | Prefix | 2.1, 3.4.1 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Host | 2.1, 3.4.1 | Host | 2.1, 3.4.1 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Address List | 3.4.3 | Address List | 3.4.3 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Hop Count | 3.4.4 | Hop Count | 3.4.4 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Path Vector | 3.4.5 | Path Vector | 3.4.5 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Generic Label | 3.4.2.1 | Generic Label | 3.4.2.1 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
ATM Label | 3.4.2.2 | ATM Label | 3.4.2.2 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Frame Relay | 3.4.2.3 | Frame Relay | 3.4.2.3 |
Label | | Label | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Status | 3.4.6 | Status | 3.4.6 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Extended Status | 3.5.1 | Extended Status | 3.5.1 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Returned PDU | 3.5.1 | Returned PDU | 3.5.1 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Returned Message| 3.5.1 | Returned Message| 3.5.1 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Common Hello | 3.5.2 | Common Hello | 3.5.2 |
Parameters | | Parameters | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
T-bit | 3.5.2 | T-bit | 3.5.2 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
R-bit | 3.5.2 | R-bit | 3.5.2 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Hold Time | 3.5.2 | Hold Time | 3.5.2 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
IPv4 Transport | 3.5.2 | IPv4 Transport | 3.5.2 |
Address | | Address | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Configuration | 3.5.2 | Configuration | 3.5.2 |
Sequence Number | | Sequence Number | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
IPv6 Transport | 3.5.2 | IPv6 Transport | 3.5.2 |
Address | | Address | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Common Session | 3.5.3 | Common Session | 3.5.3 |
Parameters | | Parameters | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
KeepAlive Time| 3.5.3 | KeepAlive Time| 3.5.3 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
PVLim | 3.5.3 | PVLim | 3.5.3 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Max PDU Length| 3.5.3 | Max PDU Length| 3.5.3 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
ATM Session | 3.5.3 | ATM Session | 3.5.3 |
Parameters | | Parameters | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
M values | | M values | |
0 No Merge | 3.5.3 | 0 No Merge | 3.5.3 |
------------+-----------------------------+------------------------- ------------+-----------------------------+-----------------------
1 VP Merge | 3.5.3 | 1 VP Merge | 3.5.3 |
------------+-----------------------------+------------------------- ------------+-----------------------------+-----------------------
2 VC Merge | 3.5.3 | 2 VC Merge | 3.5.3 |
------------+-----------------------------+------------------------- ------------+-----------------------------+-----------------------
3 VP & | 3.5.3 | 3 VP & | 3.5.3 |
VC Merge | | VC Merge | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
D-bit | 3.5.3 | D-bit | 3.5.3 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
ATM Label | 3.5.3 | ATM Label | 3.5.3 |
Range | | Range | |
Component | | Component | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Frame Relay | 3.5.3 | Frame Relay | 3.5.3 |
Session | | Session | |
Parameters | | Parameters | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
M values | | M values | |
0 No Merge | 3.5.3 | 0 No Merge | 3.5.3 |
------------+-----------------------------+------------------------- ------------+-----------------------------+-----------------------
1 Merge | 3.5.3 | 1 Merge | 3.5.3 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
D-bit | 3.5.3 | D-bit | 3.5.3 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Frame Relay | 3.5.3 | Frame Relay | 3.5.3 |
Label Range | | Label Range | |
Component | | Component | |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Label Request | 3.5.7 | Label Request | 3.5.7 |
Message ID | | Message Id | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Vendor-Private | 3.6.1.1 | Vendor-Private | 3.6.1.1 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Experimental | 3.6.2 | Experimental | 3.6.2 |
==================+=============================+=========================
==================+=============================+=======================
LDP Messages | 3.5, throughout LDP Messages | 3.5, throughout
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Notification | 3.5.1 | Notification | 3.5.1 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Hello | 3.5.2 | Hello | 3.5.2 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Initialization | 3.5.3 | Initialization | 3.5.3 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
KeepAlive | 3.5.4 | KeepAlive | 3.5.4 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Address | 3.5.5 | Address | 3.5.5 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Address Withdraw| 3.5.6 | Address Withdraw| 3.5.6 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Label Mapping | 3.5.7 | Label Mapping | 3.5.7 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Label Request | 3.5.7 | Label Request | 3.5.7 |
Message ID TLV| | Message Id TLV| |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Hop Count TLV | 3.5.7 | Hop Count TLV | 3.5.7 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Path Vect TLV | 3.5.7 | Path Vect TLV | 3.5.7 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Label Request | 3.5.8 | Label Request | 3.5.8 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Hop Count TLV | 3.5.8 | Hop Count TLV | 3.5.8 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Path Vect TLV | 3.5.8 | Path Vect TLV | 3.5.8 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Label Withdraw | 3.5.10 | Label Withdraw | 3.5.10 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Label TLV | 3.5.10 | Label TLV | 3.5.10 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Label Release | 3.5.11 | Label Release | 3.5.11 |
----------------+-----------------------------+------------------------- ----------------+-----------------------------+-----------------------
Label TLV | 3.5.11 | Label TLV | 3.5.11 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Label Abort Req | 3.5.9 | Label Abort Req | 3.5.9 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Vendor-Private | 3.6.1.2 | Vendor-Private | 3.6.1.2 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Experimental | 3.6.2 | Experimental | 3.6.2 |
==================+=============================+=========================
==================+=============================+=======================
LDP Status Codes | 3.4.6 LDP Status Codes | 3.4.6
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Success | 3.4.6, 3.9 | Success | 3.4.6, 3.9 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Bad LDP Id | 3.5.1.2.1 | Bad LDP Id | 3.5.1.2.1 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Bad Ptcl Version| 3.5.1.2.1 | Bad Ptcl Version| 3.5.1.2.1 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Bad PDU Length | 3.5.1.2.1 | Bad PDU Length | 3.5.1.2.1 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Unknown Message | 3.5.1.2.1 | Unknown Message | 3.5.1.2.1 |
Type | | Type | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Bad Message | 3.5.1.2.1 | Bad Message | 3.5.1.2.1 |
Length | | Length | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Unknown TLV | 3.5.1.2.2 | Unknown TLV | 3.5.1.2.2 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Bad TLV length | 3.5.1.2.2 | Bad TLV length | 3.5.1.2.2 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Malformed TLV | 3.5.1.2.2 | Malformed TLV | 3.5.1.2.2 |
Value | | Value | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Hold Timer | 3.5.1.2.3 | Hold Timer | 3.5.1.2.3 |
Expired | | Expired | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Shutdown | 3.5.1.2.4 | Shutdown | 3.5.1.2.4 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Loop Detected | 3.4.5.1.2, 3.5.8.1 | Loop Detected | 3.4.5.1.2, 3.5.8.1 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Unknown FEC | 3.4.1.1 | Unknown FEC | 3.4.1.1 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
No Route | 3.5.8.1 | No Route | 3.5.8.1 |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
No Label | 3.5.8.1 | No Label | 3.5.8.1 |
Resources | | Resources | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Label Resources | 3.5.8.1 | Label Resources | 3.5.8.1 |
Available | | Available | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Session Rejected| 2.5.3, 3.5.3 | Session Rejected| 2.5.3, 3.5.3 |
No Hello | | No Hello | |
------------------+-----------------------------+-------------------------
------------------+-----------------------------+-----------------------
Session Rejected| 2.5.3, 3.5.3 | Session Rejected| 2.5.3, 3.5.3 |
Parameters | | Parameters | |
Advert Mode | | Advert Mode | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Session Rejected| 2.5.3, 3.5.3 | Session Rejected| 2.5.3, 3.5.3 |
Parameters | | Parameters | |
Max PDU Length | | Max PDU Length | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Session Rejected| 2.5.3, 3.5.3 | Session Rejected| 2.5.3, 3.5.3 |
Parameters | | Parameters | |
Label Range | | Label Range | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
KeepAlive Timer | 2.5.6, 3.5.1.2.3 | KeepAlive Timer | 2.5.6, 3.5.1.2.3 |
Expired | | Expired | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Label Request | 3.5.9.1 | Label Request | 3.5.9.1 |
Aborted | | Aborted | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Missing Message | 3.5.1.2.1 | Missing Message | 3.5.1.2.1 |
Parameters | | Parameters | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Unsupported | 3.4.1.1, 3.5.5.1 | Unsupported | 3.4.1.1, 3.5.5.1 |
Address Family | | Address Family | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Session Rejected| 3.5.1.2.5, 3.5.3 | Session Rejected| 3.5.1.2.5, 3.5.3 |
Bad KeepAlive | | Bad KeepAlive | |
Time | | Time | |
------------------+-----------------------------+------------------------- ------------------+-----------------------------+-----------------------
Internal Error | 3.5.1.2.7 | Internal Error | 3.5.1.2.7 |
==================+=============================+========================= ==================+=============================+=======================
Author's Addresses
Bob Thomas
Cisco Systems, Inc.
1414 Massachusetts Ave.
Boxborough MA 01719
EMail: rhthomas@cisco.com
Loa Andersson
Acreo AB
Isafjordsgatan 22
Kista, Sweden
EMail: loa.andersson@acreo.se
loa@pi.se
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