Chapter 50
| IP Routing Commands
Border Gateway Protocol (BGPv4)
– 1064 –
BGP Command List
Table 23: Border Gateway Protocol Commands – Version 4
Command Function Mode
General Configuration
router bgp Enables BGPv4 routing process and enters router
configuration mode
GC
ip as-path access-list Configures an autonomous system path access list GC
ip community-list Configures a community list GC
ip extcommunity-list Configures an extended community list GC
ip prefix-list Configures an address prefix list GC
aggregate-address Configures an aggregate address in the routing table RC
bgp client-to-client
reflection
Configures route reflection between clients via route
reflector
RC
bgp cluster-id Configures cluster identifier for multiple route reflectors in
the same cluster
RC
bgp confederation
identifier
Configures the identifier for a confederation containing
smaller multiple internal autonomous systems
RC
bgp confederation peer Adds an internal peer autonomous system to a
confederation
RC
bgp dampening Configures route dampening to reduce the propagation of
unstable routes
RC
bgp enforce-first-as Denies an update received from an external peer that does
not list its own autonomous system number at the
beginning of the AS path attribute
RC
bgp fast-external-failover Resets sessions for any directly connected external peers if
the link goes down
RC
bgp log-neighbor-changes Enables logging of neighbor resets (that is, up or down
status changes)
RC
bgp network import-check Checks the existence of the next-hop and its accessibility to
IGP
RC
bgp router-id Sets the router ID for this device RC
bgp scan-time Sets the interval at which to validate next hop information
for BGP routes
RC
network Specifies a network to advertise RC
redistribute Redistribute routes from one routing domain to another RC
timers bgp Sets the Keep Alive time used for maintaining connectivity,
and the Hold time to wait for Keep Alive messages before
declaring a neighbor down
RC
clear ip bgp Clears connections using hard or soft re-configuration PE
clear ip bgp dampening Clears route dampening information and unsuppresses
any suppressed routes
PE
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