Avaya Troubleshooting Routers Guia de Resolução de Problemas descarregar pdf (Página 115)

Troubleshooting a Network Connection Problem

6-9

5. Make sure that the ICMP echo outs statistic is increasing for the IP

interface.

6. Use the ping -p command to trace the path the ping is taking, look for

loops, and determine whether the packet’s TTL (time to live) ﬁeld times

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.

7. Check the cabling on the local and remote devices.

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

9. Make sure the circuit is enabled and up.

10. Make sure the interface is enabled and up.

11. Make sure the next hop address in the routing table

a. Is its own interface address for any directly connected network

b. Is the address of another router’s interface on a directly connected

network for any non-directly connected network

Ping Does Not Work

Complete the instructions in the sections that apply:

•“Router Cannot Ping

Another Local Device”

•“Router Cannot Ping Endsta

tion, but Can Ping Other Endstations on the Same

Segment”

•“Endsta

tion Cannot Ping the Remote Interface on the Router”

•“Endsta

tion Can Ping Devices on the Same Segment, but Cannot Ping the

Router”

•“Endsta

tion Can Ping Local and Remote Interfaces on the Router, but Cannot

Ping a Remote Station”

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

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

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Avaya Troubleshooting Routers Guia de Resolução de Problemas Página 115