Re: [nsp] Diffrences between buildin and NM 10/100 Ethernet modules

From: Doug McIntyre (
Date: Mon May 27 2002 - 00:23:49 EDT

On Sun, May 26, 2002 at 02:19:40PM +0200, Stefan Reelsen wrote:
> Sunday, May 26, 2002, 2:04:39 PM, you wrote:
> T> Did 10/100 Ethernet interfaces build in above Cisco routers have
> T> any diffrences between NM 10/100 Ethernet interfaces (ex.NM-1FE2W) ?
> T> I talking with friend, and He said that build in Ethernet intefaces
> T> didn't support VLAN encapsulations like dot1q/ISL. My question
> T> is regarding interfaces in:
> T> 1720
> T> 2620
> T> 3661
> T> 7200VXR I/O Controller with 1 FastEthernet
> The 1720 definitely doesn_t support VLAN tagging, but I believe this
> was concerning embedded interfaces in general...?

And the 2620 definately does support VLAN tagging with the proper IOS
image licensed & loaded. I believe you need at least IP+ to do it. I'd
assume that the 3661 and 7200-FE-I/O would do it with at least the
proper IOS image loaded.

I think the 1720 doesn't do it because the 1720 series platform
usually has a much reduced feature set, and its IP+ image basicly
brings it back up to the level of basic IP in the rest of the platforms.

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