IBM 8285 Nways, Installation And User Manual

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Problems with PINGing
Workgroup Switch Cannot PING the ARP Servers and Vice-versa
First: Use the SHOW DEVICE command to determine the Q.2931 cause code. Follow the steps that correspond the
cause code:
31 Explanation: The IP address of the workgroup switch is not in the same IP subnet as the ARP server.
Steps to Take:
1. Change the IP address or IP subnet mask of the workgroup switch.
1 Explanation: A wrong ARP server address was entered with the SET DEVICE ARP_SERVER command, ot
the port of the ARP server is NOT IN SERVICE or NO ACTIVITY status.
Steps to Take:
1. Check that the port attached to the ARP server is OKAY , then check that the ATM address shown by the
ARP server is exactly the same as the one entered in the workgroup switch (by entering the SHOW
DEVICE command).
3 (SSI links to ARP server in the same cluster)
Steps to Take:
1. An SSI port does not have enough bandwidth. Having several SSI ports on the module may reach the
bandwidth limit.
Spread the SSI ports over several modules.
2. The ATM address of an workgroup switch located on the PING path has been changed.
Disable the SSI link and re-enable it.
If the above does not solve the problem, take a TRS dump (with the DUMP TRS command), and contact your
IBM service representative.
3 (NNI links to ARP server in another cluster)
Steps to Take:
1. The NNI network-side/user-side definition rules have not been applied.
Check that one side of the NNI link is defined as user, and that the other side is defined as network.
2. No logical-link has been defined for the NNI port.
Define the logical link, using the SET LOGICAL_LINK command.
3. The peer logical links do not match (bad vpi match, bad cluster match, bad bandwidth match).
Check that the logical links on both sides do match, and if necessary, clear those logical links are
re-define them.
4. No static route has been defined, if the workgroup switch and the ARP-server are in different ATM
subnetworks.
Define the static routes using the SET STATIC_ROUTE command.
5. A static route was badly configured.
Check the static routes, using the SHOW STATIC_ROUTE command.
6. The VP-tunnel is defective.
Ask your VP-tunnel provider to test it.
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IBM 8285 Nways ATM Workgroup Switch: Installation and User’s Guide