HP 6125G HP 6125G & 6125G/XG Blade Switches Network Management and Mon - Page 8

Using ping, tracert, and system debugging, Ping, Using a ping command to test network connectivity

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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 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 Task Check whether a specified address in an IP network is reachable. Command • 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 |-tos tos ] * host [ -i interface-type interface-number ] Remarks Use one of the commands. Available in any view. IMPORTANT: When you configure the ping command for a low-speed network, HP recommends that you set a larger value for the timeout timer (indicated by the -t keyword in the command). Ping example Network requirements Test the network connectivity between Device A and Device C in Figure 1. If they can reach each other, get detailed information about routes from Device A to Device C. 1

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1
Using ping, tracert, and system debugging
Use the ping, tracert, and system debugging utilities to test network connectivity and identify network
problems.
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
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
|
-tos
tos
] *
host
[
-i
interface-type
interface-number
]
Use one of the commands.
Available in any view.
IMPORTANT:
When you configure the
ping
command for a low-speed network, HP recommends that you set a larger
value for the timeout timer (indicated by the
-t
keyword in the command).
Ping example
Network requirements
Test the network connectivity between Device A and Device C in
Figure 1
. If they can reach each other,
get detailed information about routes from Device A to Device C.