Specifications

show ip bgp neighbors
MP-465
Cisco IOS Multiprotocol Label Switching Command Reference
January 2010
Connections established 3; dropped 2
Last reset 00:24:26, due to Peer closed the session
External BGP neighbor may be up to 2 hops away.
Connection state is ESTAB, I/O status: 1, unread input bytes: 0
Connection is ECN Disabled
Local host: 10.108.50.1, Local port: 179
Foreign host: 10.108.50.2, Foreign port: 42698
Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)
Event Timers (current time is 0x68B944):
Timer Starts Wakeups Next
Retrans 27 0 0x0
TimeWait 0 0 0x0
AckHold 27 18 0x0
SendWnd 0 0 0x0
KeepAlive 0 0 0x0
GiveUp 0 0 0x0
PmtuAger 0 0 0x0
DeadWait 0 0 0x0
iss: 3915509457 snduna: 3915510016 sndnxt: 3915510016 sndwnd: 15826
irs: 233567076 rcvnxt: 233567616 rcvwnd: 15845 delrcvwnd: 539
SRTT: 292 ms, RTTO: 359 ms, RTV: 67 ms, KRTT: 0 ms
minRTT: 12 ms, maxRTT: 300 ms, ACK hold: 200 ms
Flags: passive open, nagle, gen tcbs
IP Precedence value : 6
Datagrams (max data segment is 1460 bytes):
Rcvd: 38 (out of order: 0), with data: 27, total data bytes: 539
Sent: 45 (retransmit: 0, fastretransmit: 0, partialack: 0, Second Congestion: 08
Table 27 describes the significant fields shown in the display. Fields that are preceded by the asterisk
character (*) are displayed only when the counter has a nonzero value.
Ta b l e 27 show ip bgp neighbors Field Descriptions
Field Description
BGP neighbor IP address of the BGP neighbor and its autonomous system
num
ber.
remote AS Autonomous system number of the neighbor.
local AS 300 no-prepend (not shown
i
n display)
Verifies that the local autonomous system number is not
prepended to received external routes. This output supports the
hiding of the local autonomous systems when migrating
autonomous systems.
internal link “internal link” is displayed for iBGP neighbors. “external link”
i
s displayed for external BGP (eBGP) neighbors.
BGP version BGP version being used to communicate with the remote router.
remote router ID IP address of the neighbor.
BGP state Finite state machine (FSM) stage of session negotiation.
up for Time, in hhmmss, that the underlying TCP connection has been
i
n existence.