H3C Technologies H3C WX6000 Series Access Controllers - Manual (Page 61)

5-1
5
System Maintenance and Debugging
This chapter includes these sections:
z Ping
z Tracert
z System Debugging
z Ping and Tracert Configuration Example
You can use the ping command and the tracert command to verify the current network connectivity,
and use the debug command to enable debugging and thus to diagnose system faults based on the
debugging information.
Ping
Introduction
You can use the ping command to verify whether a device with a specified address is reachable, and to
examine network connectivity.
The ping function is implemented through the Internet Control Message Protocol (ICMP):
1) The source device sends an ICMP echo request to the destination device.
2) The source device determines whether the destination is reachable based on whether it receives
an ICMP echo reply; if the destination is reachable, the source device determines the link quality
based on the numbers of ICMP echo requests sent and replies received, determines the distance
between the source and destination based on the round trip time of ping packets.
Configuring Ping
Follow the step below to configure the ping function:
To do… Use the command… Remarks
ping [ ip ] [ -a source-ip | -c count | -f | -h ttl | -i
interface-type interface-number | -m interval |
-n | -p pad | -q | -r | -s packet-size | -t timeout |
-tos tos | -v | -vpn-instance
vpn-instance-name ] * host
Check whether a
specified address in an
IP network is reachable
ping ipv6 [ -a source-ipv6 | -c count | -m
interval | -s packet-size | -t timeout ] * host [ -i
interface-type interface-number ]
Required
Use either approach
The ping command is applicable in
an IPv4 network; the ping ipv6
command is applicable in an IPv6
network.
Available in any view