Users Guide

4. Enable BGP on the device.
router bgp as-number
5. Enter an unnumbered neighbor in ROUTER-BGP mode.
neighbor interface interface-type
interface interface-type — (Optional) Enter one of the following interface types:
● ethernet node/slot/port[:subport] — Display Ethernet interface information.
● port-channel id-number — Display port channel interface IDs, from 1 to 128.
●
vlan vlan-id — Display the VLAN interface number, from 1 to 4093.
6. Enable the BGP neighbor in ROUTER-NEIGHBOR mode.
no shutdown
Example for configuring an unnumbered neighbor
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# ipv6 nd max-ra-interval 4
OS10(conf-if-eth1/1/1)# ipv6 nd min-ra-interval 3
OS10(conf-if-eth1/1/1)# ipv6 nd send-ra
OS10(conf-if-eth1/1/1)# no shutdown
OS10(conf-if-eth1/1/1)# exit
OS10(config)# router bgp 100
OS10(config-router-bgp-100)# neighbor interface ethernet 1/1/1
OS10(config-router-neighbor)# no shutdown
Example outputs for viewing unnumbered BGP interfaces
OS10# show ip bgp
BGP local RIB : Routes to be Added , Replaced , Withdrawn
BGP local router ID is 14.233.209.106
Status codes: s suppressed, S stale, d dampened, h history, * valid, > best
Path source: I - internal, a - aggregate, c - confed-external,
r - redistributed/network, S - stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight
Path
*>r 31.1.1.0/24 0.0.0.0 0 100
32768 ?
*> 41.1.1.0/24 ethernet 1/1/1 0 100
32768 ?
OS10# show ip bgp neighbors interface ethernet1/1/1
BGP neighbor is fe80::76e6:e2ff:fef6:b81 via ethernet1/1/1, remote AS 100, local AS 200
external link
BGP version 4, remote router ID 125.12.57.117
BGP state ESTABLISHED, in this state for 00:15:52
Last read 00:21:08 seconds
Hold time is 180, keepalive interval is 60 seconds
Configured hold time is 180, keepalive interval is 60 seconds
Fall-over disabled
Received 20 messages
1 opens, 0 notifications, 0 updates
19 keepalives, 0 route refresh requests
Sent 20 messages
1 opens, 1 notifications, 0 updates
18 keepalives, 0 route refresh requests
Minimum time between advertisement runs is 30 seconds
Minimum time before advertisements start is 0 seconds
Capabilities received from neighbor for IPv4 Unicast:
MULTIPROTO_EXT(1)
ROUTE_REFRESH(2)
CISCO_ROUTE_REFRESH(128)
796
Layer 3