Link to home
Create AccountLog in
Avatar of TonyGarza
TonyGarzaFlag for United States of America

asked on

HELP! Configure cisco fast ethernet card

I have a 2600 router that I need to take out the ethernet card and add and fast ethernet card.  I am running cisco ISO my question is what commands to I need to run to make the fast ethernet card work.  Basically can someone walk me through configuring the fast ethernet card and the proper steps in doing so.

Avatar of Don Johnston
Don Johnston
Flag of United States of America image

The only thing you'll need to do is reference it as "fastethernet" instead of "ethernet".

You will also have the option of specifying the speed. Or you could let it auto negotiate the speed and duplex which is the default.

Because IOS will renumber and rename interface, all the settings for ethernet interface will be lost including IP, so if you have any access lists, policies or routing maps on the interface you need to save it and reapply to the new FastEthernet interface. It's recommended to force speed and duplex settings on the router and switch interfaces if possible and not count on aut-negotiation.

old config
  ip address <IP><MASK>
  ip access-group <name> in
  service-policy <name> out

FastEtherenet 0/0
[Copy and paste all the settings]

What model 2600 do you have and what version of IOS are you running? If you have a non XM 2600 then it does not support the FE network modules. 2600XM models came with built in FE interfaces.

Unless you have a 2691XM I do not think it suports the FE network module, Please provide the additional information detailing the model and IOS version to know for sure.

-harbor235 ;}

What is the part number for your FE module? The base 2600 does not support any of the FE Network Modules.
Guys, please don't conguse people
This taken from alive system right now.

Slot 1:
        Fast-ethernet Port adapter, 1 port
        Port adapter is analyzed
        Port adapter insertion time unknown
        EEPROM contents at hardware discovery:
        Hardware revision 1.0           Board revision B0
        Serial number     7096702       Part number    800-03490-01
        FRU Part Number:  NM-1FE-TX=
        Test history      0x0           RMA number     00-00-00
        EEPROM format version 1
        EEPROM contents (hex):
          0x00: 01 44 01 00 00 6C 49 7E 50 0D A2 01 00 00 00 00
          0x10: 58 00 00 00 98 02 02 00 FF FF FF FF FF FF FF FF

Cisco Internetwork Operating System Software
IOS (tm) C2600 Software (C2600-IO3-M), Version 12.3(6a), RELEASE SOFTWARE (fc4)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Fri 02-Apr-04 19:17 by kellythw
Image text-base: 0x80008098, data-base: 0x80CFE36C

ROM: System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)
ROM: C2600 Software (C2600-I-M), Version 12.0(9), RELEASE SOFTWARE (fc1)

Router uptime is 1 year, 49 weeks, 5 days, 11 hours, 58 minutes
System returned to ROM by power-on
System restarted at 08:30:57 EST Sun Oct 16 2005
System image file is "flash:c2600-io3-mz.123-6a.bin"

cisco 2610 (MPC860) processor (revision 0x203) with 28672K/4096K bytes of memory.
Processor board ID JAD04310ED0 (2907446022)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
1 Ethernet/IEEE 802.3 interface(s)
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

Thanks, tvman. I looked at the document referenced and the chart said N/A for 2600, but I think it doesn't mean it is not supported, just says that there is no limit since the limit is physical one of only one NM slot anyway...

The documnet I have does not list the 2610 as compatible with the nm-1fe-tx. Furthermore, even if it recognized it (as yours does) it will not work at full capacity, the 2610 is only capable of 7.68Mbps throughput. So best case this module will work approximately like the ethernet module you had installed.

Looking at your "show diag" output obviously your system recognizes this network module at the hardware level. Do you see the interface when you issue a "show ip interface brief" from IOS? If so you configure it
like any other interface. If you do not see it, it may be because it is incompatible

router#config t
router(config)# interface fX
router(config-int)#ip address x.x.x.x y.y.y.y
router(config-int)#no shut

What problems are you having specifically?

-harbor235 ;}

This router has almost 2 years uptime. I don't have any problems. Using FastEthernet module allows me to use 100/full mode.
It is not working at full capacity because router connected over T1 to the rest of the network. The original question was how to configure FastEthernet on NM module and there was a statement that it's not possible, so here is a proof from real life.

Can you see the interface via the "show ip interface brief" command, if so , try to configure it like I detailed in my previous post. If it is visible there then you should be able to configure it.

router#config t
router(config)# interface fX
router(config-int)#ip address x.x.x.x y.y.y.y
router(config-int)#no shut

-harbor235 :}
Avatar of TonyGarza


I checked and it looks like I have a 2650 router and it should support the FastEthernet card.  So if I just copy the config and input fastethernet where it says ethernet I should be good?
Avatar of tvman_od
Flag of United States of America image

Link to home
Create an account to see this answer
Signing up is free. No credit card required.
Create Account