3com MSR 20-20 참조 매뉴얼

C

HAPTER

 73: BGP D

EBUGGING

 C

OMMANDS

// Device A received the BGP Route-refresh message, with a length of 23, address 
family of 1, sub-address family of 1, and When to Refresh of 0.

debugging bgp [ ipv4-address | ipv6-address ] timer

undo debugging bgp [ ipv4-address | ipv6-address ] timer

User view

1: Monitor level

ipv4-address: IPv4 address of a peer.

ipv6-address: IPv6 address of a peer.

Use the debugging bgp timer command to enable BGP timer debugging.

Use the undo debugging bgp timer command to disable BGP timer 
debugging.

By default, this debugging is disabled.

Enabling debugging may affect system performance; therefore, use the command 
only when necessary and disable debugging once the debugging operation is 
complete.

# Configure BGP on Device A and specify BGP peer 2.2.2.2 (Device B). On Device B 
which is connected to Device A, create no corresponding BGP peer. Enable BGP 
timer debugging on Device A.

<Sysname> debugging bgp timer

*0.92311078 Sysname RM/6/RMDEBUG:

BGP_TIMER: CR Timer Expired for Peer 2.2.2.2 

# Configure BGP and specify a peer on Device B. The two devices establish a BGP 
peer relationship. Disable Device A from sending Keepalive messages to Device B. 
Then enable BGP timer debugging on Device B.

<Sysname> debugging bgp timer

*0.92311078 Sysname RM/6/RMDEBUG:

BGP_TIMER: HOLD Timer Expired for Peer 2.2.2.2 

Table 229   Description on the fields of the debugging bgp timer command

CR Timer 

Connection retry timer 

HOLD Timer 

Hold timer