Cisco Systems 8600 Series manual Tsc# show tag int, Tsc# reload, Tsc# sho tag tdp disc

Checking and Troubleshooting

Step 8 Try a ping on the tag switch connections. If the ping doesn't work, but all the tag switching and routing configuration looks correct, check that the TSC has found the VSI interfaces correctly by entering the following command at the TSC:

tsc# show tag int

Step 9 If the interfaces are not shown, re-check the configuration of port 4.1 on the BPX switch as described in the previous steps.

Step 10 If the VSI interfaces are shown, but are down, check whether the TSRs connected to the BPX switch show that the lines are up. If not, check such items as cabling and connections.

Step 11 If the TSCs and BPX switch show the interfaces are up, but the TSC doesn't, enter the following command on the TSC:

tsc# reload

Step 12 If the “show tag int” shows that the interfaces are up, but the ping doesn't work, enter the follow command at the TSC:

tsc# sho tag tdp disc

The resulting display should show something similar to the following:

Local TDP Identifier:

30.30.30.30:0

TDP Discovery Sources:

Interfaces:

ExtTagATM2.1: xmit/recv

ExtTagATM3.1: xmit/recv

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Step 13 If the interfaces on the display show “xmit” and not “xmit/recv”, then the TSC is sending TDP messages, but not getting responses. Enter the following command on the neighboring TSRs.

tsc# sho tag tdp disc

If resulting displays also show “xmit” and not “xmit/recv”, then one of two things is likely:

(a)The TSC is not able to set up VSI connections

(b)The TSC is able to set up VSI connections, but cells won't be transferred because they can't get into a queue

Step 14 Check the VSI configuration on the switch again, for interfaces 4.1, 4.2, and 4.3, paying particular attention to:

(a)maximum bandwidths at least a few thousands cells/sec

(b)qbins enabled

(c)all qbin thresholds non-zero

Note VSI partitioning and resources must be set up correctly on the interface connected to the TSC, interface 4.1 in this example, as well as interfaces connected to other tag switching devices.

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