Reference Guide

312 | Border Gateway Protocol IPv4 (BGPv4)
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Defaults
Disabled
Command Modes
ROUTER BGP
Usage
Information
The bestpath router bgp configuration mode command changes the default bestpath
selection algorithm. The multipath-relax option allows load-sharing across providers
with different (but equal-length) autonomous system paths. Without this option,
ECMP expects the AS paths to be identical for load-sharing.
Command
History
bgp bestpath med confed
c e s
Enable MULTI_EXIT_DISC (MED) attribute comparison on paths learned from
BGP confederations.
Syntax
bgp bestpath med confed
To disable MED comparison on BGP confederation paths, enter no bgp bestpath med
confed
.
Defaults
Disabled
Command Modes
ROUTER BGP
Usage
Information
The software compares the MEDs only if the path contains no external autonomous
system numbers. If you enable this command, use the clear ip bgp * command to
recompute the best path.
Command
History
bgp bestpath med missing-as-best
c e s
During path selection, indicate preference to paths with missing MED
(MULTI_EXIT_DISC) over those paths with an advertised MED attribute.
Syntax
bgp bestpath med missing-as-best
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.11.4 Introduced on the Z9000.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.7.0 Introduced on the S4810.
Version 7.8.1.0 Introduced support on S-Series
Version 7.7.1.0 Introduced support on C-Series