XGS-5240-Series User Manual

Configuration Guide of XGS-5240-Series
71-3
Chapter 71 Monitor and Debug
When the users configures the switch, they will need to verify whether the configur
ations are correct and the switch is operating as expected, and in network failure, the
users will also need to diagnostic the problem. Switch provides various debug comman
ds including ping, telnet, show and debug, etc. to help the users to check system confi
guration, operating status and locate problem causes.
71.1 Ping
Ping command is mainly used for sending ICMP query packet from the switches to
remote devices, also for check the accessibility between the switch and the remote de
vice. Refer to the Ping command chapter in the Command Manual for explanations of
various parameters and options of the Ping command.
71.2 Ping6
Ping6 command is mainly used by the switch to send ICMPv6 query packet to the
remote equipment, verifying the accessibility between the switch and the remote equip
ment. Options and explanations of the parameters of the Ping6 command please refer t
o Ping6 command chapter in the command manual.
71.3 Traceroute
Traceroute command is for testing the gateways through which the data packets tr
avel from the source device to the destination device, so to check the network accessi
bility and locate the network failure.
Execution procedure of the Traceroute command consists of: first a data packet wit
h TTL at 1 is sent to the destination address, if the first hop returns an ICMP error m
essage to inform this packet can not be sent (due to TTL timeout), a data packet with
TTL at 2 will be sent. Also the send hop may be a TTL timeout return, but the proce
dure will carries on till the data packet is sent to its destination. These procedures is f
or recording every source address which returned ICMP TTL timeout message, so to d
escribe a path the IP data packets traveled to reach the destination.