3com WX3000 User Manual

 

3-1 

You can use the ping command to check the network connectivity and the reachability of a host. 

Follow these steps to execute the ping command: 

Check the IP network 
connectivity and the 
reachability of a host 

ping [ -a ip-address ] [-c count ] [ -d ] [ -f ] 
[ -h ttl ] [ -i interface-type 
interface-number ] [ ip ] [ -n ] [ - p pattern ] 
[ -q ] [ -s packetsize ] [ -t timeout ] [ -tos 
tos ] [ -v ] host 

You can execute this 
command in any view. 

 

This command can output the following results: 

z 

Response status for each ping packet. If no response packet is received within the timeout time, 

the message "Request time out" is displayed. Otherwise, the number of data bytes, packet serial 

number, TTL (time to live) and response time of the response packet are displayed. 

z 

Final statistics, including the numbers of sent packets and received response packets, the 

irresponsive packet percentage, and the minimum, average and maximum values of response 

time. 

You can use the tracert command to trace the gateways that a packet passes from the source to the 

destination. This command is mainly used to check the network connectivity. It can also be used to help 

locate the network faults. 

The executing procedure of the tracert command is as follows: First, the source host sends a data 

packet with the TTL of 1, and the first hop device returns an ICMP error message indicating that it 

cannot forward this packet because of TTL timeout. Then, the source host resends the packet with the 

TTL of 2, and the second hop device also returns an ICMP TTL timeout message. This procedure goes 

on and on until the packet gets to the destination. During the procedure, the system records the source 

address of each ICMP TTL timeout message in order to offer the path that the packet passed through to 

the destination. 

Follow these steps to execute the tracert command: 

View the gateways that a 
packet passes from the source 
host to the destination 

tracert [ -a source-ip ] [ -f 
first-ttl ] [ -m max-ttl ] [ -p port ] 
[ -q num-packet ] [ -w timeout ] 
string 

You can execute the tracert 
command in any view.