[c-nsp] Supported number HWIC-2FE cards in 2811

[Damian Holdcroft]

Hi Seth

The ISR platforms have configuration quirks when using multiple ethernet
HWICs. Cisco have some documentation on workarounds, though none of them
pretty.. I would assume this is why Cisco don't support multiple.

In my situation I decided to remove the two HWICs (installed by another
group, but not tested, then left for 12 months before we came across it!)
and replace them with an NM-16ESW.

Chrs

On 04/08/2011 8:33 AM, "Seth Mattinen" <sethm at rollernet.us> wrote:

I recently picked up some HWIC-2FE and 1FE cards. For fun I stuck two
HWIC-2FE cards and one HWIC-1FE card into a lab 2811. To my surprise, it
started up indicating 7 Ethernet interfaces and properly identified all
interfaces in the config.

According to Cisco* the maximum supported HWIC-2FE cards for the 2811 is
one; I installed two. So what then does "supported" mean? In the past
for unsupported WIC/HWIC cards I expected "router will complain about an
invalid hardware config", but in this case all the HWIC ports were
recognized.

~Seth


*
http://www.cisco.com/en/US/docs/routers/access/interfaces/ic/hardware/installation/guide/fe_hwic.html
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