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New Member

Which ios version should i be using ?

Which ios version should i be using for my 2610 & 2611 routers. I was told they have been sitting since 2003. Thanks for any help.

The current version is:

Router>sh version
Cisco Internetwork Operating System Software
IOS (tm) C2600 Software (C2600-IK9O3S3-M), Version 12.3(5a), RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Tue 25-Nov-03 06:00 by kellythw
Image text-base: 0x80008098, data-base: 0x819E4F8C

ROM: System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)

Router uptime is 1 hour, 23 minutes
System returned to ROM by power-on
System image file is "flash:c2600-ik9o3s3-mz.123-5a.bin"

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

If you require further assistance please contact us by sending email to

cisco 2610 (MPC860) processor (revision 0x203) with 61440K/4096K bytes of memory.
Processor board ID JAD04120FJT (3900742936)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
1 Ethernet/IEEE 802.3 interface(s)
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

  • WAN Routing and Switching
New Member

Hi, i've checked with Cisco

Hi, i've checked with Cisco FN and your running IOS 12.3 IP/FW/IDS PLUS IPSEC 3DES BASIC. If you still need all of that features (feature-set), i would probably go with the GD-release and with this platform and it looks like 12.2(26c)...12.3 seems to have Release Deferred.

This platform has done it's job and maybe you should look into swap them to something new and wonderful.

Super Bronze

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If the router's IOS version meet your needs, then you might consider keeping to the same IOS train, but just migrating to the latest of it.  (The latter, in theory, would be the most bug free.)

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