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1020 CHAPTER 73: BGP DEBUGGING COMMANDS
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Default Level 1: Monitor level
Parameters ipv4-address: IPv4 address of a peer.
ipv6-address: IPv6 address of a peer.
Description Use the
debugging bgp graceful-restart command to enable GR event
debugging for BGP.
Use the
undo debugging bgp graceful-restart command to disable GR event
debugging for BGP.
After this debugging is enabled, the debugging information of the BGP GR
operation will be displayed, including the currently triggered event, state
transitions, receiving/sending of EOR messages, and peer IP address. If a fault
occurs to the GR operation of BGP, you can display the debugging information for
fault location.
Enabling debugging may affect system performance; therefore, use the command
only when necessary and disable debugging once the debugging operation is
complete.
By default, this debugging is disabled.
Examples # Enable BGP GR event debugging on the BGP GR Helper when the neighbor
performs an active/standby switchover.
<Sysname> debugging bgp graceful-restart
%Aug 24 17:05:08:770 2006 Sysname RM/3/RMLOG:
BGP.: 10.1.1.1 State is changed from ESTABLISHED to IDLE.
*Aug 24 17:05:08:786 2006 Sysname RM/6/RMDEBUG:
BGP_GR: Peer 10.1.1.1 Gracefully Restarting
// The BGP neighbor 10.1.1.1 is performing GR.
%Aug 24 17:05:40:851 2006 Sysname RM/3/RMLOG:
BGP.: 10.1.1.1 State is changed from OPENCONFIRM to ESTABLISHED.
// The BGP peer relationship has been successfully established.
*Aug 24 17:05:40:867 2006 Sysname RM/6/RMDEBUG:
BGP_GR: Sent EOR to Peer 10.1.1.1 (IPv4-UNC)
//The BGP GR Helper finished sending initial routes and then sent an EOR message
to peer 10.1.1.1.
*Aug 24 17:05:41:96 2006 Sysname RM/6/RMDEBUG:
BGP_GR: Received EOR from Peer 10.1.1.1 (IPv4-UNC)
// The BGP GR Helper received an EOR message from peer 10.1.1.1.