draft-ietf-rtgwg-ipfrr-framework-04.txt   draft-ietf-rtgwg-ipfrr-framework-05.txt 
Network Working Group M. Shand Network Working Group M. Shand
Internet Draft S. Bryant Internet Draft S. Bryant
Expiration Date: April 2006 Cisco Systems Expiration Date: September 2006 Cisco Systems
October 2005 March 2006
IP Fast Reroute Framework IP Fast Reroute Framework
draft-ietf-rtgwg-ipfrr-framework-04.txt draft-ietf-rtgwg-ipfrr-framework-05.txt
Status of this Memo Status of this Memo
By submitting this Internet-Draft, each author represents that any By submitting this Internet-Draft, each author represents that any
applicable patent or other IPR claims of which he or she is aware applicable patent or other IPR claims of which he or she is aware
have been or will be disclosed, and any of which he or she becomes have been or will be disclosed, and any of which he or she becomes
aware will be disclosed, in accordance with Section 6 of BCP 79. aware will be disclosed, in accordance with Section 6 of BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that other Task Force (IETF), its areas, and its working groups. Note that other
skipping to change at page 7, line 18 skipping to change at page 7, line 18
3.2.2) can be repaired using these basic methods alone. 3.2.2) can be repaired using these basic methods alone.
Multi-hop repair paths are more complex, both in the computations Multi-hop repair paths are more complex, both in the computations
required to determine their existence, and in the mechanisms required required to determine their existence, and in the mechanisms required
to invoke them. They can be further classified as: to invoke them. They can be further classified as:
1. Mechanisms where one or more alternate FIBs are pre-computed in 1. Mechanisms where one or more alternate FIBs are pre-computed in
all routers and the repaired packet is instructed to be all routers and the repaired packet is instructed to be
forwarded using a "repair FIB" by some method of per packet forwarded using a "repair FIB" by some method of per packet
signaling such as detecting a "U-turn" [U-TURNS, FIFR] or by signaling such as detecting a "U-turn" [U-TURNS, FIFR] or by
marking the packet. marking the packet [SIMULA].
2. Mechanisms functionally equivalent to a loose source route which 2. Mechanisms functionally equivalent to a loose source route which
is invoked using the normal FIB. These include tunnels is invoked using the normal FIB. These include tunnels
[TUNNELS], alternative shortest paths [ALT-SP] and label based [TUNNELS], alternative shortest paths [ALT-SP] and label based
mechanisms. mechanisms.
3. Mechanisms employing special addresses or labels which are 3. Mechanisms employing special addresses or labels which are
installed in the FIBs of all routers with routes pre-computed to installed in the FIBs of all routers with routes pre-computed to
avoid certain components of the network. For example [NOT-VIA]. avoid certain components of the network. For example [NOT-VIA].
skipping to change at page 12, line 44 skipping to change at page 12, line 44
Alternative Shortest Paths", draft-tian-frr- Alternative Shortest Paths", draft-tian-frr-
alt-shortest-path-01.txt, (work in progress) alt-shortest-path-01.txt, (work in progress)
BASE Atlas, A., Zinin, A., "Basic Specification BASE Atlas, A., Zinin, A., "Basic Specification
for IP Fast-Reroute: Loop-free Alternates", for IP Fast-Reroute: Loop-free Alternates",
draft-ietf-rtgwg-ipfrr-spec-base-04.txt, draft-ietf-rtgwg-ipfrr-spec-base-04.txt,
(work in progress) (work in progress)
BFD Katz, D. and Ward, D., "Bidirectional BFD Katz, D. and Ward, D., "Bidirectional
Forwarding Detection", Forwarding Detection",
draft-ietf-bfd-base-03.txt, (work in draft-ietf-bfd-base-04.txt, (work in
progress). progress).
FIFR S. Nelakuditi, S. Lee, Y. Yu, Z.-L. Zhang, FIFR S. Nelakuditi, S. Lee, Y. Yu, Z.-L. Zhang,
and C.-N. Chuah, "Fast local rerouting for and C.-N. Chuah, "Fast local rerouting for
handling transient link failures.," Tech. handling transient link failures.," Tech.
Rep. TR-2004-004, University of South Rep. TR-2004-004, University of South
Carolina, 2004. Carolina, 2004.
MPLSFRR Pan, P. et al, "Fast Reroute Extensions to MPLSFRR Pan, P. et al, "Fast Reroute Extensions to
RSVP-TE for LSP Tunnels", RFC 4090. RSVP-TE for LSP Tunnels", RFC 4090.
MICROLOOP Bryant, S. and Shand, M., "A Framework for MICROLOOP Bryant, S. and Shand, M., "A Framework for
Loop-free Convergence", Loop-free Convergence",
draft-bryant-shand-lf-conv-frmwk-01.txt, draft-bryant-shand-lf-conv-frmwk-02.txt,
(work in progress). (work in progress).
NOT-VIA Bryant, S., Previdi, S., Shand, M., "IP Fast NOT-VIA Bryant, S., Previdi, S., Shand, M., "IP Fast
Reroute Using Notvia Addresses", Reroute Using Notvia Addresses",
draft-bryant-shand-ipfrr-notvia-addresses- draft-bryant-shand-ipfrr-notvia-addresses-
01.txt, (work in progress). 02.txt, (work in progress).
SIMULA Lysne, O., et al, "Fast IP Network Recovery
using Multiple Routing Configurations",
http://folk.uio.no/amundk/infocom06.pdf
TUNNELS Bryant, S. et al, "IP Fast Reroute using TUNNELS Bryant, S. et al, "IP Fast Reroute using
tunnels", draft-bryant-ipfrr-tunnels-02.txt, tunnels", draft-bryant-ipfrr-tunnels-02.txt,
(work in progress). (work in progress).
U-TURNS Atlas, A. et al, "IP/LDP Local Protection", U-TURNS Atlas, A. et al, "IP/LDP Local Protection",
draft-atlas-ip-local-protect-02.txt, (work in draft-atlas-ip-local-protect-02.txt, (work in
progress). progress).
12. Authors' Addresses 12. Authors' Addresses
Stewart Bryant Stewart Bryant
Cisco Systems, Cisco Systems,
250, Longwater, 250, Longwater Avenue,
Green Park, Green Park,
Reading, RG2 6GB, Reading, RG2 6GB,
United Kingdom. Email: stbryant@cisco.com United Kingdom. Email: stbryant@cisco.com
Mike Shand Mike Shand
Cisco Systems, Cisco Systems,
250, Longwater Avenue, 250, Longwater Avenue,
Green Park, Green Park,
Reading, RG2 6GB, Reading, RG2 6GB,
United Kingdom. Email: mshand@cisco.com United Kingdom. Email: mshand@cisco.com
Full copyright statement Full copyright statement
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to the rights, licenses and restrictions contained in BCP 78, and to the rights, licenses and restrictions contained in BCP 78, and
except as set forth therein, the authors retain all their rights. except as set forth therein, the authors retain all their rights.
This document and the information contained herein are provided on an This document and the information contained herein are provided on an
"AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
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