Clearing Bgp Sessions - Avaya 1000 Series Configuration Manual

Configuring BGP Features
updates
Sent 2 messages (48 bytes), 0 notifications, 0 updates
Connections established 1
Connection state is ESTABLISHED
Local host: 60.60.60.2, Local port: 179
Foreign host: 60.60.60.1, Foreign port: 1053
Group Type is External means that the session is an EBGP Session and the peer group is
BgpExternalRt which is the default group the neighbor is assigned to by default in an EBGP
session if the remote peers is not directly connected and it is of multi-hops away. Connection
state in the above output shows it as ESABLISHED, which means the Avaya and
3rdPartyRouter have successfully formed an EBGP Connection. External BGP neighbor may
be multi hops away in the above output means that the remote peer session is an EBGP Multi-
Hop session.

Clearing BGP Sessions

A BGP Session needs to be cleared if there is any policy change or to bring up a peer which
is already in an IDLE state. In Avaya BGP implementation a BGP Session can be cleared with
respect to a peer, or multiple peers in a group together or all the peers in that particular unit.
Avaya1 and Avaya2 are in ESTABLISHED state. Clear that session by specifying the peer ip
address of Avaya2, which is 60.60.60.2.
Avaya1> clear ip bgp neighbor 60.60.60.2 200
This would clear the session between Avaya1 and Avaya2. In the above command 60.60.60.2
is the remote peer address and 200 is the AS number. By clearing a bgp peer group, all the
neighbor sessions belonging to that group will get cleared.
Show ip bgp groups command displays all the groups and the peers assigned to each group.
Avaya1> show ip bgp groups
BGP group is EBGP-1
group type is External Routing, total peers 2,
established peers 2, members: 60.60.60.2 100.1.1.3
options set :
None
BGP group is BgpExternal
group type is External, total peers 1, established
peers 1, members: 30.30.30.3
options set :
306 Avaya Secure Router 1000 Series Configuration Guide December 2010