What happened to IGRP ???

methoselahmethoselah Member Posts: 49 ■■□□□□□□□□
i upgraded my router's IOS to 12.3(9), and now IGRP is missing. Whats up with that?


Cisco2524(config)#router ?
bgp Border Gateway Protocol (BGP)
eigrp Enhanced Interior Gateway Routing Protocol (EIGRP)
isis ISO IS-IS
iso-igrp IGRP for OSI networks
mobile Mobile routes
odr On Demand stub Routes
ospf Open Shortest Path First (OSPF)
rip Routing Information Protocol (RIP)


show version

Cisco Internetwork Operating System Software
IOS (tm) 2500 Software (C2500-I-L), Version 12.3(9), RELEASE SOFTWARE (fc2)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Fri 14-May-04 13:52 by dchih
Image text-base: 0x03070FE4, data-base: 0x00001000

ROM: System Bootstrap, Version 11.0(10c), SOFTWARE
BOOTLDR: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c), RELEASE SOFTWARE (fc1)

Cisco2524 uptime is 2 hours, 11 minutes
System returned to ROM by power-on
System image file is "flash:c2500-i-l.123-9.bin"

cisco 2524 (68030) processor (revision J) with 14336K/2048K bytes of memory.
Processor board ID 11283300, with hardware revision 00000000
Bridging software.
X.25 software, Version 3.0.0.
1 Ethernet/IEEE 802.3 interface(s)
2 Serial network interface(s)
56k 4-wire CSU/DSU for Serial Interface 0
5-in-1 module for Serial Interface 1
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read ONLY)

Configuration register is 0x2102


  • AlienAlien Member Posts: 398
    icon_study.gif Seems to me you have to enable and configure the routing protocol from scratch . Sorry go to go,my brain is itching. icon_scratch.gif
    Hard times on planet earth.
  • AlienAlien Member Posts: 398
    icon_cool.gif I'm back again searching for more insight. EIGRP is an enhanced version of IGRP which makes me think probably the new IOS supports only EIGRP though they should be backward compatible. I'm using 2500 routers. Have you tried configuring IGRP :

    Router(config)#router igrp 20
    Router(config-router)#network [destination net] [subnetmask] [next hop]

    After configuring and saving you can try :-

    Router#show ip route (check if IGRP is installed in the routing table)
    Router#show ip protocols (check for IGRP in routing protocols I-IGRP )

    Hope that helps. icon_confused.gif:
    Hard times on planet earth.
  • quickpotquickpot Member Posts: 47 ■■□□□□□□□□
    Cisco discontinued support of IGRP since IOS 12.3 which is stupid... because I've heard that they still test you on IGRP for the CCNA. Downgrade your IOS to 12.2 if you want to practice igrp.
  • MiekMiek Member Posts: 47 ■■□□□□□□□□
    I was looking for the image with the cisco ios feature navigator.

    It's true, cisco IOS 12.3 doesn't support IGRP icon_sad.gif

    If you're going to replace the IOS I would go for 12.2T, IP Plus.

    When you're using the router for you CCNA, you can configure DHCP and NAT on it. Not all IOS software supports DHCP ...

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