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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BGP local RIB : Routes to be Added , Replaced , Withdrawn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)
4_OCTET_AS(65)
Extended Next Hop Encoding (5)
Capabilities advertised to neighbor for IPv4 Unicast:
MULTIPROTO_EXT(1)
ROUTE_REFRESH(2)
CISCO_ROUTE_REFRESH(128)
4_OCTET_AS(65)
Extended Next Hop Encoding (5)
Prefixes accepted 0, Prefixes advertised 0
Connections established 1; dropped 0
Last reset never
Prefixes ignored due to:
Martian address 0, Our own AS in AS-PATH 0
Invalid Nexthop 0, Invalid AS-PATH length 0
Wellknown community 0, Locally originated 0
Local host: fe80::76e6:e2ff:fef5:b281, Local port: 45926
Foreign host: fe80::76e6:e2ff:fef6:b81, Foreign port: 179
Configure Dual Stack
OS10 supports dual stack for BGPv4 and BGPv6. Dual stack BGP allows simultaneous exchange of the same IPv4 or IPv6
prefixes through different IPv4 and IPv6 peers. You can enable dual stack using the activate command in the corresponding
address-family mode. By default, activate command is enabled for the IPv4 address family for all the neighbors.
626
Layer 3