UMN:CLI User Manual
V8102
600
Deletes the configured strict RFC1771 setting.
12.1.2 IGP Synchronization in BGP
The synchronization in BGP is when a BGP router does not advertise external destina-
tions learned from iBGP unless those destinations are also learned from an IGP. If syn-
chronization is enabled, an iBGP peer does not advertise an external destination learned
from another iBGP peer, unless it is also learned from the IGP (OSPF). To enable/disable
the IGP synchronization in BGP, use the following command.
Enables the IGP synchronization in BGP.
Disables the IGP synchronization in BGP.
12.1.3 BGP Autonomous System Number Formatting
To change the default display and regular expression match format of Border Gateway
Protocol (BGP) 4-byte autonomous system numbers from asplain (decimal values) to dot
notation, use the bgp asnotation dot command in router configuration mode.
To change the default display 4-byte autonomous system numbers in the asdot format,
use the following command.
bgp asnotation {dot | dotplus}
Changes the display and regulat expression format of
BGP.
12.1.4 Enforcing the First AS Path Feature
To configure a router to deny an update received from an external BGP (eBGP) peers
that do not list their autonomous system (AS) number at the first of the AS_PATH attribute
of the incoming route, use the following command.
Enforces the first AS for eBGP route.
12.1.5 External BGP Peering Session Reset
To configure a BGP routing process to immediately reset external BGP peering sessions
if the link used to reach these peers goes down, use the following command.
bgp fast-external-failover
Resets eBGP peering sessions if the link goes down
no bgp fast-external-failover
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