System Maintenance And Debugging; Ping; Introduction; Configuring Ping - H3C S5820X Series Configuration Manual

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System Maintenance and Debugging

This chapter includes these sections:

Ping

Tracert
System Debugging
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

The ping command allows you 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...
Check whether a specified
address in an IP network is
reachable
Use the command...
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
ping ipv6 [ -a source-ipv6 | -c count | -m
interval | -s packet-size | -t timeout ] * host
[ -i interface-type interface-number ]
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Remarks
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