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Single switch problem previously in a stack

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Hello 

I'm trying to troubleshoot a seeming network problem with a switch (Powerconnect 5548) that used to be part of a 2 switch stack. I can't find the root cause and now want to explore the possibilty that the switch is failing over to a switch that is no longer there. Is this possible? 

Its a production switch and recently after adding a vlan and adding the vlan to the trunk and access ports I lost connectivity to the switch on the network. This was two days after the change was made. Basically everything on the switch was unreachable over the network as well as the switch itself. I powercycled the switch and everything came back up. Unfortunately the logs didn't show anything. 

As far as I can tell the HDMI cable is no longer connected although the old master is still on the network with a single cable to one trunk port. 

console# sh system 

Unit Type
---- ----------------------
1 PowerConnect 5548


Unit Main Power Supply Redundant Power Supply
---- ----------------- ----------------------
1 OK OK


Unit Fans Status
---- ------------------
1 OK


Unit Temperature (Celsius) Temperature Sensor Status
---- ------------------------- -------------------------
1 44 OK


Unit Up time
---- ---------------
1 09,14:56:59
------------------------------------------------------------------------------------------------------------------------------------------
console# sh switch
Unit MAC Address Software Master Uplink Downlink Status
---- ----------------- ---------- -------- --------- --------- -------
1 5c:26:0a:c9:85:03 4.0.0.3 Enabled link down link down master
Topology is Chain
Stack image auto synchronization is enabled

Unit Unit Id After Reset
---- -------------------
1 0

All Replies
  • With the logs did not show any indication of the cause, it can be tricky to pinpoint the cause of the reboot. If you have any network management software setup, or if the switch is setup to send SNMP traps to a server, you may be able to look at those logs and see if it shows any indication.

    I would suggest updating the firmware on the switch.

    www.dell.com/.../powerconnect-5524

    Then monitoring the switch. Here is a link to OMNM, if you wanted to check it out.

    www.dell.com/.../pd

    Thanks

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  • This switch is in production. Would there be any reasonable expectation of downtime involved in updating the firmware?

  • You will need to schedule for downtime in order for the firmware to be applied. the switch will need to reboot to finish the process.

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