03-23-2009 05:48 AM - edited 03-04-2019 04:02 AM
I currently have a Cisco 2851 router running the following IOS
C2800NM-ADVIPSERVICESK9-M), Version 12.4(9)T
We have two additional HWIC-4ESW cards installed in the 2851 router.
The first card works ok as a layer 2 and 3 but the second card only works as a layer two device.
Can I replace the 2 HWIC-4ESW cards with a HWIC-9-D-ESW card and can all 9 ports used with different VLAN's and at layer 3?
03-23-2009 09:37 AM
Hi Jonathan,
I believe you will have to connect the two HWIC-4ESW cards with a cross-over cable to get them to work.
They are L2 devices only, there is no backplane connection between them.
The same applies to having two HWIC-9-D-ESW cards in the one chassis - you need to connect them externally.
I can't find this in a document, but I think I have read it in a Cisco doc before.
Hope this helps
Kevin
03-23-2009 10:46 AM
Yes, you can do that.
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