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Install and Configure Ethernet WIC in Cisco 1720

Posted on 2008-06-18
Medium Priority
Last Modified: 2008-06-22
I have a Cisco 1720 router with a T1 WIC installed.  I'm trying to add an Ethernet WIC to the second WIC slot in order to have another LAN segment on the router.  I've installed the WIC card into slot 1 (T1 card is in slot 0 and is working fine) but the card does not show up when I run "show interfaces".  I tried swapping the card locations so that the Ethernet WIC is in slot 0 and the T1 WIC is in slot 1 but that didn't work as I lost connectivity with my T1 line.  My router version / config is below.   I thought I had the right level of software and memory capacity to use the Ethernet WIC in slot 1 with another card in slot 0 but maybe I'm wrong.  After installing a WIC, is there anything I need to do to have the new interface recognized or should it just show up after it's installed (assuming it's supported)?

MPE-LEX-F01#show ver
Cisco Internetwork Operating System Software
IOS (tm) C1700 Software (C1700-Y-M), Version 12.2(46a), RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2007 by cisco Systems, Inc.
Compiled Wed 11-Jul-07 19:40 by pwade
Image text-base: 0x800080E0, data-base: 0x8075C4B8

ROM: System Bootstrap, Version 12.0(3)T, RELEASE SOFTWARE (fc1)

MPE-LEX-F01 uptime is 1 hour, 59 minutes
System returned to ROM by power-on
System image file is "flash:c1700-y-mz.122-46a.bin"

cisco 1720 (MPC860) processor (revision 0x601) with 36864K/12288K bytes of memor
Processor board ID JAD05340EHN (664022595), with hardware revision 0000
M860 processor: part number 0, mask 32
Bridging software.
X.25 software, Version 3.0.0.
1 FastEthernet/IEEE 802.3 interface(s)
1 Serial network interface(s)
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

Question by:emilysam
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LVL 32

Expert Comment

by:Kamran Arshad
ID: 21812701

Author Comment

ID: 21812928
Yes, I've already seen and read that document.   It states:

The card can be used with Cisco IOS Release 12.2(4)T, but the card must be installed in slot 0 and only one Cisco WIC-1ENET card can be installed in the router.

It also says:

Caveats for Cisco WIC-1ENET Cards in Routers Running Cisco IOS Release 12.2(4)T
This section provides the latest information about using a Cisco WIC-1ENET card when the router is running Cisco IOS Release 12.2(4)T.

"Only one Cisco WIC-1ENET can be installed in a Cisco 1720 or Cisco 1750 series router.

"Inserting the Cisco WIC-1ENET into slot 1 or slot 2 does not damage the router or the Cisco WIC-1ENET.

"The Cisco WIC-1ENET can be installed only in slot 0 of the Cisco 1720 or Cisco 1750 series router. If a Cisco WIC-1ENET is inserted in slot 1, an error message appears when the router is booted, and the interface is not available. The Link LED also does not light, because the IOS does not attempt any interaction when the Cisco WIC-1ENET is in an unsupported slot.

Now, I'm running version 12.2(46a), which I assume is a HIGHER version than 12.2(4) T but I could be wrong.   Since I suspect that my problem may be with the IOS version, can someone tell me what version I should use so that I can have a T1 WIC in slot 0 and an Ethernet WIC in slot 1 of my 1720 router?    

Also, I did try and switch the location of the two WICs so that the Ethernet was in slot 0 and the T1 was in slot 1 but then the router didn't seem to recognize the T1 WIC anymore.  When I switch the order would I have to then reconfigure the T1 card or will the router recognize that it's the same interface just installed in a different slot?


LVL 43

Accepted Solution

JFrederick29 earned 2000 total points
ID: 21813003
I would put an IOS on the router from the T train (12.2(latest)T) or go with 12.3(something).  The T train has more hardware/feature support.

Author Comment

ID: 21842529
I loaded a 12.3 image reloaded and now the Ethernet0 interface shows up.  Worked!!! thanks.


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