Cisco 1841 HWIC 2FE Unknown WAN Daughter Card

Purchased some HWIC 2FE for 1841 and 2811.  Neither device will recognize.  Checked compatibility before buying and says they should work.  Running 12.4(25) IOS.  Show diag says Unknown WAN Daughter Card.

Any ideas on how to get the devices to see the card?  Below are the outputs from a few commands that might be helpful.  Let me know if other command output is needed.  The sho ip int brief at the bottom shows the fixed fastethernet ports.  This particular 1841 has a WIC2T in slot 1.


Router#show version
Cisco IOS Software, 1841 Software (C1841-ADVIPSERVICESK9-M), Version 12.4(25b),
Technical Support:
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Wed 12-Aug-09 10:49 by prod_rel_team

ROM: System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)

Router#show diag
        WIC/HWIC Slot 0:
        Unknown WAN daughter card
        WIC module not supported/disabled in this slot
        Hardware Revision        : 2.0
        Top Assy. Part Number    : 800-27738-02
        Part Number              : 73-10677-02
        Board Revision           : B0
        Deviation Number         : 0
        Fab Version              : 02
        PCB Serial Number        : FOC14416FF5
        RMA Test History         : 00
        RMA Number               : 0-0-0-0
        RMA History              : 00
        Product (FRU) Number     : HWIC-2FE
        Version Identifier       : V01
        CLEI Code                : COUIAFUCAA
        Base MAC Address         : f866.f270.d1dc
        MAC Address block size   : 2
        Connector Type           : 01
        EEPROM format version 4
        EEPROM contents (hex):
          0x00: 04 FF 40 05 3B 41 02 00 C0 46 03 20 00 6C 5A 02
          0x10: 82 49 29 B5 02 42 42 30 88 00 00 00 00 02 02 C1
          0x20: 8B 46 4F 43 31 34 34 31 36 46 46 35 03 00 81 00
          0x30: 00 00 00 04 00 CB 92 48 57 49 43 2D 32 46 45 20
          0x40: 20 20 20 20 20 20 20 20 20 89 56 30 31 20 D9 02
          0x50: 40 C1 C6 8A 43 4F 55 49 41 46 55 43 41 41 CF 06
          0x60: F8 66 F2 70 D1 DC 43 00 02 05 01 FF FF FF FF FF

Router#show ip int brief
Interface                  IP-Address      OK? Method Status                Prot
FastEthernet0/0            unassigned      YES unset  administratively down down

FastEthernet0/1            unassigned      YES unset  administratively down down

Serial0/1/0                unassigned      YES unset  administratively down down

Serial0/1/1                unassigned      YES unset  administratively down down

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It looks like you don't have the correct software train. According to the post @, you need a T train Cisco IOS for the card on the Cisco 2811. So it looks like 124-24.T1 might work. I am going to check for the Cisco 1841. It may be the same. So if you have a CCO account with Cisco, you should be able to try out this the 124-24.T1 IOS.



According to the "1- and 2-Port Fast Ethernet High-Speed WIC for Cisco Integrated Services Routers" document @, both Cisco 2811 and 1841, support this card. But you need a minimum of 12.4(20)T IP Base IOS. This will align with my first post.


gspbirdhuntAuthor Commented:
Can you education me on what the T train version of IOS is?  Am running 12.4(25) but no T.  

I do have a CCO account and will download to test.  Will get back with you.  Thanks.
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On small routers like the 1800, 2800, 1700 etc, you have two types of Cisco IOS train, i.e. the main train and the T train.  

The T stands for Technology as part of the Consolidated Technology Early Deployment (CTED) releases.  The T train is used to introduce new features, new hardware platforms, and other enhancements to Cisco IOS whereas the mainline release is used to cater for on-going bug fixes only, i.e. no new functionality.

You can read more about this from the document @

I must admit that I don't understand all of it because Cisco have a complex way of structuring the Cisco IOS but I hope the attached document can give you some ideas.



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gspbirdhuntAuthor Commented:
Thanks for the explanation.  Also did some reader - clearer now but still muddy.  I did download T versions of IOS this am but have 32MB flash cards in the 1841's.  All of the 12.4 T versions are bigger than that so cannot put the IOS on the device without more Flash.  It's a little frustrating that I can't use ANY main train IOS for the 2FE.

Anyway - can't officially test to make sure the card works with the T IOS but sounds like we are on the right path.  Thanks for your help.
I had the same flash device problem and had to borrow one to test. So it will be good if you can borrow a 64M flash to test.

Good luck.
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