SL8500 - Library Stops Communicating When One Port is Disconnected

Asset ID:	1-72-1964924.1
Update Date:	2017-05-19
Keywords:

Solution Type Problem Resolution Sure

Solution 1964924.1 : SL8500 - Library Stops Communicating When One Port is Disconnected

Applies to:

Sun StorageTek SL8500 Modular Library System - Version All Versions and later
Information in this document applies to any platform.

ENVIRONMENT:
Dual TCP/IP
Port 2A connected to router1 in subnet 1
Port 2B connected to router2 in subnet 2
Default route defined via router2

Symptoms

Library stops communicating when one port is disconnected.

When port 2B goes down (cable disconnected), library-host communication stops.

Cause

No static route defined for port 2A.

No static route defined for port 2B.

Port 2B is communicating via the default route (router2).

Solution

Troubleshooting steps:

Check library port settings using the command:
network ip address show

Check route settings using the command:
Network ip route show

Library stops communicating when one port is disconnected

Verify routes exist for both ports.
Check paths by doing a ‘ping’ from the library to the host from each port.

NOTE: There’s no mechanism to force the ping to go out on a specific port. Do this by physically disconnecting one port.

If ping to the host fails, try pinging the router.
If ping to router fails, have customer check router address and the router hardware.
If no routes exist, check policy routes by issuing the command:
- network ip policy route show dev 2A
- network ip policy route show dev 2B

Make sure there’s a policy route for each host address and for each port to that host address.

If policy routes exist, check policy status to ensure policies are enabled. Issue the command:
- network ip policy status

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