Avaya Troubleshooting Routers Anleitung zur Fehlerbehebung PDF herunterladen (Seite 91)

Troubleshooting a Data Link Connection Problem

5-13

• 4 = wrap B

This state indicates that the A and B ports connect to two different

concentrators that connect to the same ring.

• 5 = wrap AB

• 6 = through

This is the normal, non-wrap operating state for a dual-attached station.

• 7 = local A

• 8 = local B

• 9 = local AB

• 10 = local S

• 11 = cwrap A

This state indicates that FDDI wrapped the A port of the FDDI link or net

module because the B port is not receiving data.

Make sure the B port cable is not disconnected, and the port is functional.

One of the two ﬁbers leading into the B port may be broken. Troubleshoot

the cable.

• 12 = cwrap B

This state indicates that FDDI wrapped the B port of the FDDI link or net

module because the A port is not receiving data.

Make sure the A port cable is not disconnected, and the port is functional.

Troubleshoot the cable.

4. Use the Technician Interface to look at the values of the following

attributes in the wfFddiMacEntry object. The

get command is next to the

attribute name. Or, use this Quick Get path to access them:

wfLine➔wfFddiGroup➔wfMacGroup➔wfFddiMacTable

• wfFddiMacUpstreamNbr (

get wfFddiMacEntry.4.*)

This shows the MAC address of the upstream neighbor in the ring. Use it

to determine whether the router wrapped the ring.

• wfFddiMacDownstreamNbr (

get wfFddiMacEntry.5.*)

This shows the MAC address of the downstream neighbor in the ring. Use

it to determine whether the router wrapped the ring.

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Avaya Troubleshooting Routers Anleitung zur Fehlerbehebung Seite 91