topic 3825 not showing 3 gigabitethernet interfaces when NM 16ESW plugged in. in Switching

3825 not showing 3 gigabitethernet interfaces when NM 16ESW plugged in.

Stampeder — Fri, 08 Mar 2019 19:53:34 GMT

First time here. Excuse me if this is the wrong place to ask this question.

I have two 3825's with a NM 16ESW etherswitch card. When I plug this car into either of them it only shows two Ge interfaces show up (sho ip int br) not 3 as I have read on line. I cannot access the internal gigabitethernet port and thus cannot route from the 10/100 ports through the router to the outside world. I am running 15.1(4)M8

3825-ADVENTUREPRISE-K9-M

Any suggestions will be greatly appreciated.

Regards.

Glenn.

Re: 3825 not showing 3 gigabitethernet interfaces when NM 16ESW plugged in.

Philip D'Ath — Thu, 31 Aug 2017 01:50:32 GMT

I'm surprised one of the built in interfaces dissappears. Perhaps try going to a more recent gold star release of code like 15.1.4M12a.

https://software.cisco.com/download/release.html?mdfid=279042640&flowid=7529&softwareid=280805680&release=15.1.4M12a&relind=AVAILABLE&rellifecycle=MD&reltype=latest

To use the ports on the card you need to define VLANs, assign ports to those VLANs, and put your layer 3 configuration on the VLANs.

Re: 3825 not showing 3 gigabitethernet interfaces when NM 16ESW plugged in.

Stampeder — Thu, 31 Aug 2017 14:39:55 GMT

Thanks for the reply Philip.

What I find really strange is that both 3825s demonstrate the same issue.

I think you may be onto something however with the IOS version since it is common to both machines. I will have to get a copy of the one you suggest.

Best regards.

Glenn.