Network Connectivity Test - 3Com 4500 PWR 26-Port Configuration Manual

62

Network Connectivity Test

Wh n config e uring network connectivity test, go to these sections for information you are interested in:
ping
tracert
Network Connectivity Test
ping
You can u se the ping
To do...
Check the IP network
connectivity and the
reachability of a host
This command can output the following results:
Response status for each ping packet. If no response packet is received within the
the message "Request time out" is displayed. Otherwise, the number of data bytes, packet serial
number, time to live (TTL) and response time of the response packet are displayed.
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.
trace rt
You can use the tracert co
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 th
address of e ach ICMP TTL
the destination.
To do...
View the gateways that a
packet passes from the source
host to the destination
command to chec k the network connectivity and the rea
Use the command...
ping [ -a ip-address ] [-c count ] [ -d ] [ -f ]
[ -h ttl ] [ -i interface-type interface-n
[ ip ] [ -n ] [ - p pattern ] [ -q ] [ -s packetsize ]
[ -t timeout ] [ -tos tos ] [ -v ] host
mmand to trace the gateways that a packet passes from the source to the
e packet gets to the destination. During the procedure, the system records the source
timeout mes sage in order to offer the
Use the command...
tracert [ -a source-ip ] [ -f
first-ttl
[ -q num-packet ] [ -w timeout ]
string
umber ]
path that the pa
] [ -m max-ttl ] [ -p port ]
62-1
chability of a host.
Remarks
You can execute this
command in any view.
timeout time,
cket passed through to
Remarks
You can execute the tracert
command in any view.