Reference Guide

Border Gateway Protocol IPv4 (BGPv4) | 301
Syntax
bgp bestpath as-path multipath-relax
To return to the default BGP routing process, enter no bgp bestpath as-path multipath-relax.
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
To return to the default selection, use the no bgp bestpath med missing-as-best command.
Defaults
Disabled
Version 8.3.11.4 Introduced on the Z9000.
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