HP 5820X Switch User Manual

1
System maintenance and debugging
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 to diagnose system faults based on the debugging
information.
Configuring ping
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 ICMP using the following workflow:
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.
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.
NOTE:
• For a low-speed network, 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 se
g
ment address can be pin
g
ed if the out
g
oin
g
interface is specified with
the -i argument
• For more information about the ping lsp command, see MPLS basics commands
in the MPLS
Command Reference
.
Configuring ping example
Network requirements
As shown in Figure 1, check whether Device A and Device C can reach each other. If they can reach
each other, get the detailed information of routes from Device A to Device C.

HP 5820X Switch Specifications

General

Brand	HP
Model	5820X Switch
Category	Network Router
Language	English