H3c-technologies H3C WX6000 Series Access Controllers Instrukcja Użytkownika Pobierz pdf (Strona 61)

5-1

5 System Maintenance and Debugging

This chapter includes these sections:

z Ping

z Tracert

z System Debugging

z Ping and Tracert Configuration Example

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.

Ping

Introduction

You can use the ping command 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 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.

Configuring Ping

Follow the step below to configure the ping function:

To do… Use the command… Remarks

ping

[

] [ -

source-ip |

-c

count |

-f

| -

ttl | -

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

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