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bgp default local-preference
Change the default local preference value for routes exchanged between internal BGP peers.
Syntax
bgp default local-preference value
To return to the default value, use the no bgp default local-preference command.
Parameters
value Enter a number to assign to routes as the degree of preference for those routes.
When routes are compared, the higher the degree of preference or local preference
value, the more the route is preferred. The range is from 0 to 4294967295. The
default is 100.
Defaults 100
Command Modes ROUTER BGP
Supported Modes Full–Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
bgp enforce-first-as
Disable (or enable) enforce-first-as check for updates received from EBGP peers.
Syntax
bgp enforce-first-as
To turn off the default, use the no bgp enforce-first-as command.
Defaults Enabled.
Command Modes ROUTER BGP
Supported Modes Full–Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the 10/40GbE Switch IO Module.
Usage
Information
This is enabled by default; that is, for all updates received from EBGP peers, BGP ensures that the first
AS of the first AS segment is always the AS of the peer. If not, the update is dropped and a counter is
incremented. To view the failed enforce-first-as check counter, use the show ip bgp ipv6 unicast
neighbors command.
If you disable enforce-first-as, view it using the show ip protocols command.
Related
Commands
show ip bgp ipv6 unicast neighbors — displays IPv6 routing information exchanged by BGP neighbors.
show ip protocols — views information on routing protocols.
bgp fast-external-fallover
Enable the fast external fallover feature, which immediately resets the BGP session if a link to a directly connected external peer
fails.
Syntax
bgp fast-external-fallover
To disable fast external fallover, use the no bgp fast-external-fallover command.
IPv6 Border Gateway Protocol (IPv6 BGP) 609