Concept Guide

Last read 00:00:00, Last write 00:00:07
Hold time is 90, keepalive interval is 30 seconds
Received 18 messages, 0 in queue
7 opens, 6 notifications, 0 updates
5 keepalives, 0 route refresh requests
Sent 26 messages, 0 in queue
7 opens, 0 notifications, 0 updates
19 keepalives, 0 route refresh requests
Route refresh request: received 0, sent messages 0
Minimum time between advertisement runs is 30 seconds
Minimum time before advertisements start is 0 seconds
For address family: IPv4 Unicast
BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0
InQ : Added 0, Replaced 0, Withdrawn 0
OutQ : Added 0, Withdrawn 0
Allow local AS number 0 times in AS-PATH attribute
Prefixes accepted 0, withdrawn 0 by peer, martian prefixes ignored 0
Prefixes advertised 0, denied 0, withdrawn 0 from peer
Connections established 0; dropped 0
Last reset never
No active TCP connection
Conguring a BGP peer
To congure BGP between two peers, use the following commands.
Following are the steps to congure a BGP peer. The following example conguration demonstrates how the congure a neighbor and IPv4
multicast address family. The default is IPv4 unicast address family.
• Enter the router conguration mode and the AS number.
CONFIG mode
router bgp as-number
• Add the IP address of the neighbor for the specied autonomous system.
CONFIG-ROUTER-BGP mode
neighbor {ip-address | ipv6–address | peer-group-name} remote-as as-number
• Enable the neighbor.
CONFIG-ROUTERBGP mode
neighbor ip-address | ipv6-address | peer-group-name no shutdown
• Specify the IPv4 address family conguration.
CONFIG-ROUTER-BGP mode
address-family ipv4 [multicast | vrf vrf-name]
multicast — Species the IPv4 multicast address family.
vrf vrf-name — Species the name of VRF instance associated with the IPv4 address-family conguration.
• Enable the neighbor to exchange prexes for IPv4 unicast address family.
CONFIG-ROUTER-BGP-AF (Address Family) mode
neighbor {ip-address | ipv6–address | peer-group-name} activate
NOTE
: Neighbors have to be activated using neighbor activate command in the respective address family to exchange
other address prex types such as IPv4 multicast and IPv6 unicast.
190 Border Gateway Protocol (BGP)