Avaya Troubleshooting Routers Guía para resolver problemas descargar pdf (Pagina 119)

Troubleshooting a Network Layer Problem

308656-14.00 Rev 00

6-9

Ping your interface address.

Ping the next-hop address listed in the routing table for the network on

which the remote host resides.

Ensure that the ICMP echo outs statistic is increasing for the IP interface.

Use the

ping -p

command to trace the path of the ping, look for loops, and

determine whether the packet’s TTL (time to live) field has timed out.

The message

Unreachable indicates that IP does not have a route to the

network in the routing table and cannot issue a ping request.

The message

Does not respond indicates that the router did not receive a

response to the ping request.

Check the cabling on the local and remote devices.

Make sure the application is running on the local and remote devices.

Make sure the circuit is enabled and activated.

10.

Make sure the interface is enabled and activated.

11.

Make sure the next-hop address in the interface routing table is set to:

The address of the interface for any directly connected network

The address of another router’s interface on a directly connected

network for any non-directly connected network

Ping Does Not Work

Follow the instructions in the sections that apply:

•“Router Cannot Ping Another Local Device

”

•“Router Cannot Ping Endstation, but Can Ping Other Endstations on the Same

Segment”

•“Endstation Cannot Ping the Remote Interface on the Router

”

•“Endstation Can Ping Devices on the Same Segment, but Cannot Ping the

Router”

Note:

The source address used in any ping (ICMP echo request) originating at

the router is always the IP address of the router’s outgoing port.

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Avaya Troubleshooting Routers Guía para resolver problemas Pagina 119