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Have a situation where I will potentially have a 200MB WAN link coming in to my Core (Cat4006) switch. I am looking at simply placing a 2821 series router with GigE capable interfaces to support this incoming traffic.

My 4006 switching module does not support GigE speeds on the Ethernet ports as it is only a 10/100 card. I do have two 1000Base-X ports on my routing module (WS-X4232-L3), so are there any adapters that will allow me to connect the 2821 10/100/1000 interface to the 1000Base-X interface to benefit from GigE there.

Chassis has a Sup II and the following details are from the sh ver on switch.


C1_Farm_4K> (enable) sh ver

WS-C4006 Software, Version NmpSW: 6.4(21)

Copyright (c) 1995-2006 by Cisco Systems, Inc.

NMP S/W compiled on Feb 16 2006, 18:34:57

GSP S/W compiled on Feb 16 2006, 12:20:59

System Bootstrap Version: 6.1(4)

Hardware Version: 3.2 Model: WS-C4006 Serial #: XXXX

Mod Port Model Serial # Versions

--- ---- ---------- -------------------- ---------------------------------

1 2 WS-X4013 XXXX Hw : 3.2

Gsp: 6.4(21.0)

Nmp: 6.4(21)

2 34 WS-X4232-L3 XXXX Hw : 1.7

3 48 WS-X4148-RJ XXXX Hw : 3.0

4 6 WS-X4306 XXXX Hw : 2.0

5 6 WS-X4306 XXXX Hw : 2.0


Module Total Used Free Total Used Free Total Used Free

------ ------- ------- ------- ------- ------- ------- ----- ----- -----

1 65536K 34263K 31273K 16384K 9012K 7372K 480K 216K 264K


Re: Cat4006

I was going to say, 28XX isn't going to have an SFP module, but a 38XX will. There are other ways to do this though. Option 1) The quickest/cheapest way would be to get a fiber optic transceiver patched to the switch... I.E. ISP - Router - Transceiver - 4006. I have a link showing some examples of transceivers here: You'll need to match the appropriate fiber type to your GBIC and make sure to have the appropriate patch cable. Option 2) Otherwise you can look at a 3825 or 3845 and get an SFP and patch the switch directly to the router.

Either way will work, just depends on your budget.

Hope this helps, rate if it does,


New Member

Re: Cat4006

Patching directly is best for me. I found a listed GigE HWIC that indicates that it is supported in the 2800 and 3800. Am I looking at it wrong? Thanks for all of your input.


Re: Cat4006

Good catch, I guess that would be option 3. :)


New Member

Re: Cat4006

Thanks JB,

Your assistance was defintely helpful.

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