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1022 CHAPTER 73: BGP DEBUGGING COMMANDS
For details about UPDATE message debugging information, refer to the following
section.
Examples # Display the debugging information about all the BGP messages received and
sent, including Open, Keepalive, Update, and Route-refresh, while Device A and
Device B are establishing a BGP peer relationship with each other.
<Sysname> debugging bgp
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] undo synchronization
[Sysname-bgp] peer 11.1.1.2 group 200
*0.2683484 4945 RM/6/RMDEBUG:
BGP.: 11.1.1.2 Send OPEN, Version: 4
Local AS: 100, HoldTime: 180, Router ID: 192.168.74.1
OPT Type: 2 (Capability)
CAP Type: 1 (Multiprotocol) CAP Len: 4
IPv4-UNC (1/1)
CAP Type: 2 (RouteRefresh) CAP Len: 0
Total CAPB Len : 8
Total OPT Len : 10
Total Message Len : 39
// Information about the sent BGP Open message
*0.2683500 4945 RM/6/RMDEBUG:
BGP.: 11.1.1.2 Recv OPEN Length: 39
Version: 4, Local AS: 200, HoldTime : 180,
BGP ID: 192.168.74.2, TotOptLen: 10
OPT Type: 2 (Capability) OPT Len: 8
CAP Type: 1 (Multiprotocol) CAP Len: 4
Table 227 Description on the fields of the debugging bgp open command
Field Description
Version: X BGP protocol version
Local AS: X Local AS number
OPT Type: 2 (Capability) Capability negotiation
CAP Type: 1 (Multiprotocol) CAP Len: 4 Multiprotocol capability: afi: 1; safi: 1
IPv4-UNC (1/1)
CAP Type: 2 (RouteRefresh) CAP Len: 0
Capable of route-refresh
Total CAPB Len : X Total capability length
Total OPT Len : X Total optional parameter length
Table 228 Description on the fields of the debugging bgp refresh command
Field Description
AFI/ SAFI Address family/sub-address family
WTR (When to Refresh) Wait delay for sending
refresh messages