Troubleshooting Guide

Switch:1(config)# router bgp
Display the global debug messages for error and packet:
Switch:1(router-bgp)#global-debug mask error,packet
End (disable) the display of global debug messages:
Switch:1(router-bgp)#global-debug mask none
Display specific debug messages for the global BGP neighbors:
Switch:1(router-bgp)#neighbor-debug-all mask packet,event
Display specific debug messages for BGP peers or peer groups:
Switch:1(router-bgp)#neighbor 45.17.10.23 neighbor-debug-mask event,trace
Display debug messages on the console:
Switch:1(router-bgp)#debug-screen on
Variable definitions
Use the data in the following table to use the global-debug mask and neighbor-debug-all
mask commands.
Variable Value
WORD<1-100> Specifies one or more mask choices that you enter, separated
by commas with no space between choices. For example:
[<mask>,<mask>,<mask>...]. Options include: none, all, error,
packet, event, trace, warning, state, init, filter, update.
Use the data in the following table to use the neighbor command.
Variable
Value
<nbr_ipaddr|peer-group-name> Specifies the IP address or the group name of the peer.
WORD<1-100> Specifies one or more mask choices that you enter, separated
by commas with no space between choices. For example:
[<mask>,<mask>,<mask>...]. Options include: none, all, error,
packet, event, trace, warning, state, init, filter, update.
Job aid
Use debug command values to control debug messages for global BGP message types, and for
message types associated with a specified BGP peer or peer group. The following table identifies
mask categories and messages.
Unicast routing troubleshooting
January 2017 Troubleshooting 254
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