Command Line Reference Guide

300 | Border Gateway Protocol IPv4 (BGPv4)
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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 ipv4 unicast soft * 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
Command Modes
ROUTER BGP
Usage
Information
The MED is a 4-byte unsigned integer value and the default behavior is to assume a missing MED as
4294967295. This command causes a missing MED to be treated as 0. During the path selection, paths
with a lower MED are preferred over those with a higher MED.
Command
History
bgp bestpath router-id ignore
c e s
Do not compare router-id information for external paths during best path selection.
Syntax
bgp bestpath router-id ignore
To return to the default selection, use the no bgp bestpath router-id ignore command.
Defaults
Disabled
Command Modes
ROUTER BGP
Usage
Information
Configuring this option will retain the current best-path. When the session is subsequently reset, the
oldest received path will be chosen as the best-path.
Command
History
Version 7.8.1.0 Introduced support on S-Series
Version 7.7.1.0 Introduced support on C-Series
Version 7.8.1.0 Introduced support on S-Series
Version 7.7.1.0 Introduced support on C-Series
Version 6.3.1.0 Introduced
Version 8.3.1.0 Introduced