H3C Technologies H3C SR8800 - Manual (Page 13)

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Using ping, tracert, and system debugging
You can use the ping command to check the connectivity to a destination, use the tracert command to
trace the path to a destination, and use the debug command to diagnose system faults based on the
debugging information.
Ping
Introduction
Use the ping utility to check the reachability to a specific address.
Ping sends ICMP echo requests (ECHO-REQUEST) to the destination device. Upon receiving the requests,
the destination device responds with ICMP echo replies (ECHO-REPLY) to the source device. The source
device outputs statistics about the ping operation, including the number of packets sent, number of echo
replies received, and the round-trip time. You can measure the network performance by analyzing these
statistics.
Configuring ping
To configure the ping function:
Task Command Remarks
Check whether a specified
address in an IP network is
reachable.
• For an IPv4 network:
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
• For an IPv6 network:
ping ipv6 [ -a source-ipv6 | -c count |
-m interval | -s packet-size | -t timeout |
-vpn-instance vpn-instance-name ] *
host [ -i interface-type
interface-number ]
Use either approach.
Available in any view.
NOTE:
•
For a low-speed network, H3C recommends that you set a larger value for the timeout timer (indicated
by the -t parameter in the command) when configuring the ping command.
• Only the directly connected segment address can be pinged if the outgoing interface is specified with
the -i argument.
• For more information about the ping lsp command, see MPLS Command Reference.