Dell Force10 Z9000, Reference Manual

Page: 461 / 1483

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 0 to 4294967295. The default is 100.
Defaults 100
Command Modes ROUTER BGP
Command History
Version 8.2.1.0 Introduced on the E-Series ExaScale.
Version 7.4.1.0 Introduced
Usage
Information The
bgp default local-preference
command setting is applied by all routers within
the AS.
bgp enforce-first-as
Disable (or enable) enforce-first-as check for udates received from EBGP peers.
C-Series, E-Series
Syntax bgp enforce-first-as
To turn off the default, use the
no bgp enforce-first-as
command.
Defaults Enabled.
Command Modes ROUTER BGP
Command History
Version 8.2.1.0 Introduced on the E-Series ExaScale.
Version 7.4.1.0 Introduced
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. Use the
show ip bgp neighbors
command to view the
“failed enforce-first-as check” counter.
If you disable enforce-first-as, you can view it using the
show ip protocols
command.
Related
Commands
• show ip bgp neighbors – views the 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.
C-Series, E-Series
Syntax bgp fast-external-fallover
461