draft-ietf-idr-aigp-06.txt   draft-ietf-idr-aigp-07.txt 
Network Working Group Pradosh Mohapatra Network Working Group Pradosh Mohapatra
Internet Draft Rex Fernando Internet Draft Rex Fernando
Intended Status: Proposed Standard Eric C. Rosen Intended Status: Proposed Standard Eric C. Rosen
Expires: December 23, 2011 Cisco Systems, Inc. Expires: June 12, 2012 Cisco Systems, Inc.
James Uttaro James Uttaro
ATT ATT
June 23, 2011 December 12, 2011
The Accumulated IGP Metric Attribute for BGP The Accumulated IGP Metric Attribute for BGP
draft-ietf-idr-aigp-06.txt draft-ietf-idr-aigp-07.txt
Abstract Abstract
Routing protocols that have been designed to run within a single Routing protocols that have been designed to run within a single
administrative domain ("IGPs") generally do so by assigning a metric administrative domain ("IGPs") generally do so by assigning a metric
to each link, and then choosing as the installed path between two to each link, and then choosing as the installed path between two
nodes the path for which the total distance (sum of the metric of nodes the path for which the total distance (sum of the metric of
each link along the path) is minimized. BGP, designed to provide each link along the path) is minimized. BGP, designed to provide
routing over a large number of independent administrative domains routing over a large number of independent administrative domains
("autonomous systems"), does not make its path selection decisions ("autonomous systems"), does not make its path selection decisions
skipping to change at page 14, line 9 skipping to change at page 14, line 9
10. Normative References 10. Normative References
[BGP], "A Border Gateway Protocol 4 (BGP-4)", Y. Rekhter, T. Li, S. [BGP], "A Border Gateway Protocol 4 (BGP-4)", Y. Rekhter, T. Li, S.
Hares, RFC 4271, January 2006. Hares, RFC 4271, January 2006.
11. Informative References 11. Informative References
[ADDPATH] "Fast Connectivity Restoration Using BGP Add-Path", P. [ADDPATH] "Fast Connectivity Restoration Using BGP Add-Path", P.
Mohapatra, R. Fernando, C. Filsfils, R. Raszuk, draft-pmohapat-idr- Mohapatra, R. Fernando, C. Filsfils, R. Raszuk, draft-pmohapat-idr-
fast-conn-restore-01.txt, March 2011. fast-conn-restore-02.txt, October 2011.
[BESTEXT], "Advertisement of the Best External Route in BGP", P. [BESTEXT], "Advertisement of the Best External Route in BGP", P.
Marques, R. Fernando, E. Chen, P. Mohapatra, H. Gredler, draft-ietf- Marques, R. Fernando, E. Chen, P. Mohapatra, H. Gredler, draft-ietf-
idr-best-external-04.txt, April 2011. idr-best-external-04.txt, April 2011.
[RFC2119] "Key words for use in RFCs to Indicate Requirement [RFC2119] "Key words for use in RFCs to Indicate Requirement
Levels.", S. Bradner, March 1997. Levels.", S. Bradner, March 1997.
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