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New Member

Why upgrade to native IOS on a 6500?

I've done the conversion several times. I'm at a site and am recommending that they upgrade to native IOS and am getting a little push back.

Can anyone give me some compelling arguments as to why native IOS is better that hybrid?



Hall of Fame Super Silver

Re: Why upgrade to native IOS on a 6500?

I'm not sure I would characterize the differences as compelling. Certainly mananging a single interface and image is less complex than two. Many folks, myself included contend that it is more intuitive to configure and understand the device's functions when one does so from a single CLI.


Re: Why upgrade to native IOS on a 6500?

Other than cisco is pushing to do away with catos I can't think of anything big either , in fact I have always found it is easier to do layer 2 type stuff in catos than IOS . For layer 2 switches I would take catos anyday but everyone has their preferences.

New Member

Re: Why upgrade to native IOS on a 6500?

Some reasons for converting to IOS are:

1. SSO (Stateful Switch Over) less than 3 seconds in the event of a supervisor failure to be recovered, usually failure not even noticed.

2. NSF (Non Stop Forwarding) doesn't drop a packet during switch from a failed supervisor to a standby.

3. GOLD (Generic Online Diagnostics) switch and module diagnostics actively on. Not all Hybrid implementations support this. IOS has great support and going forward is included.

4. A single IOS file and rolling upgrades a breeze.

5.Training, familiarity with IOS on a router = short time to learn IOS on 6500.

I like CATOS but other more junior folks struggle with multiple command sets so unless you want the infrastucture support to be dominated by people that wear suspenders and talk in lizard lingo convert for the consistent command set and familiar feel.


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