3640 routers and IOS 12.4(t)

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Aug 14th, 2007
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I've read here that 3640's are the router of choice for CCNA/CCNP study, but checking Cisco.com, it appeas only the 3660 and 3631 support 12.4....Can anyone clarify this for me as I'm ready to purchase some equipment for a home lab??

BTW- here's my equip list so far:

3x 3640's

2x 2950's

1x 2509 access server

and maybe a frame switch.. ( any suggestions??)



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srue Tue, 08/14/2007 - 10:59
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12.4 is available for 3640's. It doesn't look like it's available for 3620's though.

I use a 3620 with an NM-4T for my frame switch. But you can use anything that supports the proper serial port module.

You should also check out Dynamips if you haven't already.

jrensink78 Tue, 08/14/2007 - 11:34
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The 3640 routers can run 12.4 IOS, but not 12.4T. The T signifies new technology or features not originally included in the 12.4 mainline release.

I do agree that dynamips is great for just doing router studies. But not so much when it comes to switching.

I wouldn't even bother with a home lab for the CCNA. Just use the exam simulators that you often get with your study materials and that should be sufficient. You can use dynamips for the router practice if you want.

For the CCNP, you could get by with just using dynamips for the BSCI test. You would probably want to pick up a few 3550 switches for the BCMSN test, since you'll want layer 3 switches. I can't speak much in relation to the other 2 tests.

fkleininger Wed, 08/15/2007 - 04:53
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Thank you!

I've checked out Dynamips and will use it at some point. Until now i've had only hands-on experience with 1700 series and some 3com switches. I think I like the idea of working with the real thing, esp for pursuing the more advanced certs.

BTW- I just got a hold of a new Pix 506e from work; will this sufffice for training for the security track or are ASA's the FW of choice?

thanks in advance


2pparish Fri, 08/17/2007 - 02:06
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Get access to 1 or 2 routers...they could be 2501's for gods sake, it doesnt matter.

The whole purpose in buying routers is to get yourself familiar with cabling, ports, and upgrading IOS images, using console cable and telnet apps.

Once you become familiar with all that go ahead and use Dynamips.

Dynamips is cheaper(free), easy to setup, and not too hard to learn.

Dynamips is a great tool for having multiple routers connected and having a frame switch. These items used to cost a bundle, and still do.

vazquez.jorge Thu, 09/06/2007 - 13:18
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I have the similar set-up, I got the following:

3- 3640s

3- 2950s

I plan on getting the CCNA, then CCNP. This lab set-up should help me out. I am starting to learn that I need a 3550 for the CCNP switching exam.

Am I correct?



PS: Also, are the 3640s capable of upgrading to the 12.4t? What are we missing out if they are unable to be upgraded?

fkleininger Thu, 09/06/2007 - 14:12
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yes, a 3550 is a layer 3 device which is tested at the NP level.

3640's will run IOS 12.4 with 128/32 memory upgrades, NOT 12.4(t)

good luck



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