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Switch(config-router)# bgp default local-preference 500
14.8.3.17 bgp deterministic-med
Command: bgp deterministic-med
no bgp deterministic-med
Function:
Use the best MED for the same prefix in the AS to compare with other AS. The
“
no bgp deterministic-med
” cancels this configuration
Parameter:
None
Default:
Not configured
Command Mode:
BGP routing mode.
Usage Guide:
Normally if same prefix routes from several paths, each path will be
compared. With this configuration, the system will only use the path with the smallest
MED in the AS (when other main attributes equal) to compare with other AS. After the
best one is elected, select the path among AS with no regard to MED value.
Example:
Switch(config-router)#bgp deterministic-med
14.8.3.18 bgp enforce-first-as
Command: bgp enforce-first-as
no bgp enforce-first-as
Function:
Enforces the first AS position of the route AS-PATH contain the neighbor AS
number or else disconnect this peer when the BGP is reviving the external routes. The
“
no bgp enforce-first-as
” command cancels this configuration
Parameter:
None
Default:
Not configured
Command Mode:
BGP routing mode.
Usage Guide:
This command is usually for avoiding unsafe or unauthenticated routes.
Example:
Switch(config-router)#bgp enforce-first-as
14.8.3.19 bgp fast-external-failover
Command: bgp fast-external-failover
no bgp fast-external-failover
Function:
Fast reset when the BGP neighbor connection varies at the interface other
than wait for TCP timeout. The “
no bgp fast-external-failover
” command cancels this
configuration
Parameter:
None
Default:
Configured
Command Mode:
BGP routing mode.
Usage Guide:
This command is for immediately cutting of the neighbor connection when
