R3204P16-HP Load Balancing Module System Maintenance Configuration Guide-6PW101

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 thus to diagnose system faults based on the

debugging information.

NOTE:

The LB module supports configuring ping, tracert, and system debugging only at the command line

interface (CLI).

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 following:

{ The link quality, based on the numbers of ICMP echo requests sent and replies received.

{ 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… Use the command…

Remarks

Check whether a specified

address in an IP network is

reachable

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 | * host

Required

The ping command is

applicable in an IPv4 network.

Available in any view

NOTE:

• When configuring the ping command for a low-speed network, HP recommends that you set a lar

value for the timeout timer (indicated by the -t parameter in the command).

• Only the directly connected se

ment address can be pin

ed if the out

oin

interface is specified with

the -i keyword.