Foundry Networks Switch and Router User Manual

Configuring BGP4
December 2000 19 - 95
Displaying BGP4 Neighbor Information
You can display configuration information and statistic for the router’s BGP4 neighbors using either of the
following methods.
USING THE CLI
To view BGP4 neighbor information for the router, enter the following command:
BigIron# show ip bgp neighbors 192.168.4.211
IP Address AS# EBGP/IBGP RouterID PeerGroup
1 192.168.4.211 65001 EBGP 8.8.8.8 None
State Time KeepAlive HoldTime RefreshCapability
ESTABLISHED 0h1m5s 60 180 Received
SendCommunity NextHopSelf DefaultOriginate ReflectorClient UpdateSource
No No No No None
Open Update KeepAlive Notification Refresh-Req
Message Sent: 2 6 2 1 1
Message Received: 2 15 4 0 1
Last Connection Reset Reason:User Reset Peer Session
Notification Sent: Unspecified
Notification Received: Unspecified
TCP Connection state: ESTABLISHED
Local host: 192.168.2.102, Local Port: 8118
Remote host: 192.168.4.211, Remote Port: 179
ISentSeq: 2752793 SendNext: 2753085 TotUnAck: 0
TotSent: 292 ReTrans: 0 UnAckSeq: 2753085
IRcvSeq: 4010160420 RcvNext: 4010161139 SendWnd: 16093
TotalRcv: 719 DupliRcv: 0 RcvWnd: 16384
SendQue: 0 RcvQue: 0 CngstWnd: 1181
This example shows how to display information for a specific neighbor, by specifying the neighbor’s IP address
with the command. None of the other display options are used; thus, all of the information is displayed for the
neighbor. The number in the far left column indicates the neighbor for which information is displayed. When you
list information for multiple neighbors, this number makes the display easier to read.
The TCP statistics at the end of the display show status for the TCP session with the neighbor. Most of the fields
show information stored in the Layer 3 Switch’s Transmission Control Block (TCB) for the TCP session between
the Layer 3 Switch and its neighbor. These fields are described in detail in section 3.2 of RFC 793, “Transmission
Control Protocol Functional Specification”.
In this example, a specific neighbor’s IP address is entered. The command therefore shows information only for
that neighbor. None of the other options are used; thus, all the information about the neighbor is displayed. The
numbers in the leftmost column separate the entries for each neighbor.
Syntax: show ip bgp neighbors [<ip-addr> [advertised-routes [detail [<ip-addr>[/<mask-bits>]]]] | [attribute-entries
[detail]] | [flap-statistics] | [last-packet-with-error] |
[received-routes [best] | [detail [best] | [not-installed-best] | [unreachable]] |
[rib-out-routes [<ip-addr>/<mask-bits> | <ip-addr> <net-mask> | detail]] | [routes-summary]]
The <ip-addr> option lets you narrow the scope of the command to a specific neighbor.
The advertised-routes option displays only the routes that the Layer 3 Switch has advertised to the neighbor
during the current BGP4 neighbor session.
The attribute-entries option shows the attribute-entries associated with routes received from the neighbor.
The flap-statistics option shows the route flap statistics for routes received from or sent to the neighbor.
The last-packet-with-error displays a hexadecimal dump of the first 400 bytes of the last packet received from
the neighbor that contained an error.
The received-routes option lists the routes received in UPDATE messages from the neighbor. You can specify
the following additional options:

Foundry Networks Switch and Router Specifications

General

Brand	Foundry Networks
Model	Switch and Router
Category	Switch
Language	English