Users Guide

Sent 48 messages, 0 in queue
3 opens, 2 notifications, 0 updates
43 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)
Capabilities advertised to neighbor for IPv4 Unicast :
MULTIPROTO_EXT(1)
ROUTE_REFRESH(2)
CISCO_ROUTE_REFRESH(128)
For address family: IPv4 Unicast
BGP table version 1395, neighbor version 1394
Prefixes accepted 1 (consume 4 bytes), 0 withdrawn by peer
Prefixes advertised 0, rejected 0, 0 withdrawn from peer
Connections established 3; dropped 2
Last reset 00:00:12, due to Missing well known attribute
Notification History
'UPDATE error/Missing well-known attr' Sent : 1 Recv: 0
'Connection Reset' Sent : 1 Recv: 0
Last notification (len 21) sent 00:26:02 ago
ffffffff ffffffff ffffffff ffffffff 00160303 03010000
Capturing PDUs
To capture incoming and outgoing PDUs on a per-peer basis, use the capture bgp-pdu neighbor direction command. To
disable capturing, use the no capture bgp-pdu neighbor direction command.
The buer size supports a maximum value between 40MB (the default) and 100MB. The capture buers are cyclic and reaching the
limit prompts the system to overwrite the oldest PDUs when new ones are received for a given neighbor or direction. Setting the
buer size to a value lower than the current maximum, might free captured PDUs to set the new limit.
NOTE: Memory on RP1 is not pre-allocated and is allocated only when a PDU needs to be captured.
The buers storing the PDU free memory when:
• BGP is disabled.
• A neighbor is uncongured.
• The clear ip bgp command is issued.
• New PDUs are captured and there is no more space to store them.
• The max buer size is reduced. (This may clear PDUs depending on the buer space consumed and the new limit.)
Example of the show capture bgp-pdu neighbor Command
Example of Viewing Space Requirements for Storing all PDUs
To change the maximum buer size, use the capture bgp-pdu max-buffer-size command. To view the captured PDUs,
use the show capture bgp-pdu neighbor command.
Dell#show capture bgp-pdu neighbor 20.20.20.2
Incoming packet capture enabled for BGP neighbor 20.20.20.2
Available buffer size 40958758, 26 packet(s) captured using 680 bytes
PDU[1] : len 101, captured 00:34:51 ago
ffffffff ffffffff ffffffff ffffffff 00650100 00000013 00000000 00000000 419ef06c
00000000
00000000 00000000 00000000 00000000 0181a1e4 0181a25c 41af92c0 00000000 00000000
00000000
00000000 00000001 0181a1e4 0181a25c 41af9400 00000000
PDU[2] : len 19, captured 00:34:51 ago
Border Gateway Protocol IPv4 (BGPv4)
215