Reference Guide

Border Gateway Protocol | 181
FTOS displays debug messages on the console. To view which debugging commands are enabled, use the
show debugging command in EXEC Privilege mode.
Use the keyword no followed by the debug command To disable a specific debug command. For example,
to disable debugging of BGP updates, enter
no debug ip bgp updates command.
Use
no debug ip bgp to disable all BGP debugging.
Use
undebug all to disable all debugging.
Storing Last and Bad PDUs
FTOS stores the last notification sent/received, and the last bad PDU received on per peer basis. The last
bad PDU is the one that causes a notification to be issued. These PDUs are shown in the output of the
command
show ip bgp neighbor, as shown in Figure 8-34.
debug ip bgp dampening [in | out] EXEC Privilege View information on BGP route being dampened.
debug ip bgp [ip-address | peer-group
peer-group-name]
events [in | out]
EXEC Privilege View information on local BGP state changes and
other BGP events.
debug ip bgp [ip-address | peer-group
peer-group-name] keepalive [in | out]
EXEC Privilege View information about BGP KEEPALIVE
messages.
debug ip bgp [ip-address | peer-group
peer-group-name] notifications [in | out]
EXEC Privilege View information about BGP notifications received
from or sent to neighbors.
debug ip bgp [ip-address | peer-group
peer-group-name] updates [in | out]
[prefix-list name]
EXEC Privilege View information about BGP updates and filter by
prefix name
debug ip bgp {ip-address |
peer-group-name} soft-reconfiguration
EXEC Privilege Enable soft-reconfiguration debug. Enable
soft-reconfiguration debug.
To enhance debugging of soft reconfig, use the
following command only when route-refresh is not
negotiated to avoid the peer from resending
messages:
bgp soft-reconfig-backup
In-BGP is shown via the show ip
protocols
command.
Command Syntax Command Mode Purpose