Command Manual – System Management 
Quidway S8500 Series Routing Switches 
Chapter 8  SSH Terminal Service Configuration 
Commands
 
Huawei Technologies Proprietary 
8-1 
Chapter 8  SSH Terminal Service Configuration 
Commands 
8.1  SSH Server Configuration Commands 
8.1.1  debugging ssh server 
Syntax 
debugging ssh server { VTY index | all } 
undo debugging ssh server { VTY index | all } 
View 
User view 
Parameter 
index: SSH channel to be debugged, whose value is dictated by VTY numbers. The 
default VTY numbers are 0 to 4. 
all: All the SSH channels. 
Description 
Use the debugging ssh server command to send information regulated by the 
SSH2.0 protocol, such as the negotiation procedure, to the information center in the 
format of Debugging information. You can also use it to debug a user interface 
individually. 
Use the undo debugging ssh server command to disable the debugging. 
By default, the debugging is disabled. 
Related command: ssh server authentication-retries, ssh server rekey-interval, 
ssh server timeout. 
Example 
# Print the Debugging information when the SSH is running. 
<Quidway> debugging ssh server vty 0  
00:23:20: SSH0: starting SSH control process 
00:23:20: SSH0: sent protocol version id SSH-1.5-Quidway-1.25 
00:23:20: SSH0: protocol version id is - SSH-1.5-1.2.26 
00:23:20: SSH0: SSH_SMSG_PUBLIC_KEY msg 
00:23:21: SSH0: SSH_CMSG_SESSION_KEY msg - length 112, type 0x03