H3C Technologies H3C SecBlade LB Cards - Manual (Page 10)

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Using ping, tracert, and system debugging
Use the ping, tracert, and system debugging utilities to test network connectivity and identify network
problems.
Ping, tracert, and system debugging utilities can be used only at the CLI.
Ping
The ping utility 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.
Using a ping command to test network connectivity
Execute ping commands in any view.
Task Command Remarks
Test the
network
connectivity to
an IP address.
• 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 ]
Set a larger value for the timeout timer
(indicated by the -t parameter in the
command) when you configure the
ping command for a low-speed
network.
Disabling the echo reply function on
the destination affects the ping
function.
Ping example
Network requirements
Test the network connectivity between LB and Device B in Figure 1 . If they can reach each other, get
detailed information about routes from LB to Device B.