Specifications

show ip bgp neighbors
MP-468
Cisco IOS Multiprotocol Label Switching Command Reference
January 2010
* Bestpath from iBGP peer Deploys inbound denials because the bestpath came from an
iBGP neighbor.
* Incorrect RIB for CE Deploys inbound denials due to RIB errors for a CE router.
* BGP distribute-list Displays inbound denials due to a distribute list.
Number of NLRIs... Number of network layer reachability attributes in updates.
Connections established Number of times a TCP and BGP connection has been
s
uccessfully established.
dropped Number of times that a valid session has failed or been taken
do
wn.
Last reset Time since this peering session was last reset. The reason for the
r
eset is displayed on this line.
External BGP neighbor may be...
(
not shown in the display)
Indicates that the BGP TTL security check is enabled. The
maximum number of hops that can separate the local and remote
peer is displayed on this line.
Connection state Connection status of the BGP peer.
Connection is ECN Disabled Explicit congestion notification status (enabled or disabled).
Local host: 10.108.50.1, Local port:
17
9
IP address of the local BGP speaker. BGP port number 179.
Foreign host: 10.108.50.2, Foreign
p
ort: 42698
Neighbor address and BGP destination port number.
Enqueued packets for retransmit: Packets queued for retransmission by TCP.
Event Timers TCP event timers. Counters are provided for starts and wakeups
(e
xpired timers).
Retrans Number of times a packet has been retransmitted.
TimeWait Time waiting for the retransmission timers to expire.
AckHold Acknowledgment hold timer.
SendWnd Transmission (send) window.
KeepAlive Number of keepalive packets.
GiveUp Number times a packet is dropped due to no acknowledgment.
PmtuAger Path MTU discovery timer.
DeadWait Expiration timer for dead segments.
iss: Initial packet transmission sequence number.
snduna: Last transmission sequence number that has not been
a
cknowledged.
sndnxt: Next packet sequence number to be transmitted.
sndwnd: TCP window size of the remote neighbor.
irs: Initial packet receive sequence number.
rcvnxt: Last receive sequence number that has been locally
a
cknowledged.
Table 27 show ip bgp neighbors Field Descriptions (continued)
Field Description