Avaya 1000 Series Configuration Manual page 303

The above configuration should bring up an EBGP Session over multi-hop between Avaya1
and 3rdPartyRouter.
View the neighbor status:
Avaya1> show ip bgp neighbors
BGP neighbor is 60.60.60.3, peer group is BgpExternalRt
Remote AS 200, local AS 100, Group Type is External
Routing
BGP version 4, local router ID 60.60.60.5, remote router ID 60.60.60.3
Current state = Established, up for 00:01:23
Last state = OpenConfirm, last event = RecvKeepAlive
Last error = Open Message Error (subcode : unsupported
optional parameter)
Configured Hold time is 180 seconds, keepalive interval
is 60 seconds
Active Holdtime is 180 seconds, keepalive interval is
60 seconds
Maximum prefixes is set to 128000 (warning : 106240)
Current number of prefixes from this neighbor is 0
External BGP neighbor may be multi hops away
Received 2 messages (38 bytes), 0 notifications, 0
updates
Sent 5 messages (117 bytes), 1 notifications, 0 updates
Connections established 1
Connection state is ESTABLISHED
Local host: 60.60.60.1, Local port: 1049
Foreign host: 60.60.60.3, Foreign port: 179
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. External BGP
neighbor may be multi hops away in the above output means that the remote peer session
is an EBGP Multi-Hop session.
Connection state in the above output shows it as ESABLISHED, which means the Avaya and
3rdPartyRouter have successfully formed an EBGP Connection.
By default Avaya puts its neighbor in to one of the three groups:
• IBGP Neighbor > BgpInternal
• EBGP Neighbor > BgpExternal
• EBGP Multi-Hop Neighbor > BgpExternal_Rt
The following 3rdPartyRouter output shows external link, in this case neighbor 30.30.30.1, is
an EBGP neighbor and the BGP State shows it as ESTABLISHED.
3rdPartyRouter>show ip bgp neighbors
BGP neighbor is 60.60.60.1, remote AS 100, external
link
BGP version 4, remote router ID 60.60.60.5
BGP state = Established, up for 00:01:41
Last read 00:00:40, hold time is 180, keepalive
interval is 60 seconds
Received 5 messages, 1 notifications, 0 in queue
Sent 9 messages, 0 notifications, 0 in queue
Route refresh request: received 0, sent 0
Avaya Secure Router 1000 Series Configuration Guide
Configuring EBGP Sessions
December 2010 303