Concept Guide

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.
Usage Information
If you enter the bgp dampening command, the default values for half-life, reuse, suppress, and max-
suppress-time are applied. The parameters are position-dependent; therefore, if you congure one parameter,
congure the parameters in the order they appear in the CLI.
Related Commands show ip bgp dampened-paths — views the BGP paths.
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.
Usage Information
All routers apply the bgp default local-preference command setting within the AS. To set the local
preference for a specic route, use the set local-preference command in ROUTE-MAP mode.
Related Commands set metric — assigns a local preference value for a specic route.
bgp enforce-rst-as
Disable (or enable) enforce-rst-as check for updates received from EBGP peers.
Syntax
bgp enforce-first-as
To turn o the default, use the no bgp enforce-first-as command.
Defaults Enabled
Command Modes ROUTER BGP
Supported Modes Full–Switch
300 Border Gateway Protocol IPv4 (BGPv4)