Avaya Troubleshooting Routers Guide de dépannage télécharger pdf (Page 99)

Troubleshooting a Data Link Connection Problem

5-21

Checking the Address Format (Bay Networks Standard Only)

If the router is running Version 7.0 or later of the Bay Networks Standard

protocol, and you deﬁned explicit addressing, make sure the addresses are in

decimal format. (The addresses in a Series 5 router are in hexadecimal format.) If

the address is greater than 9 and in the wrong format, the synchronous link fails to

come up.

Troubleshooting a Synchronous to X.21 Connection

If you connect a Bay Networks router running Series 7 or Series 8 software to a

device with an X.21 interface, do the following:

1. Set the appropriate Com port jumpers on the Ethernet link module to the

X.21 setting.

Refer to Installing and Maintaining BN Routers for instructions.

2. Enter the following command:

get wfSyncEntry.76.*

Make sure that you set the synchronous polling in the router’s

synchronous line driver conﬁguration to 2 (disabled), which is the default

setting.

If it is 1 (enabled) and the DSR (data set ready) lead drops, the software

disables the synchronous driver. When you set the driver conﬁguration to 2,

the software disregards the DSR lead.

Reception Errors Incrementing or Reception Count Not Incrementing

Conduct a local loopback test of the local CSU (channel service unit) or DSU

(digital service unit). During the loopback test, check the transmission and

reception statistics. If the transmission and reception statistics increment equally

without errors, conduct a loopback test of the remote CSU/DSU if at least one of

the following is true:

• You conﬁgured the synchronous line as standard with explicit addressing.

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Avaya Troubleshooting Routers Guide de dépannage Page 99