We have two core Catalyst 6509 with SUP2 running in Hybrid mode with CatOS: 7.6.6 and IOS:12.1.20(E3).
We bought two SUP 720 to replace the two SUP2. Because the two Catalyst 6509 are the production switches "run a very critical business", I want to do the convertion with a minimal impact to the client.
1. Remove SUP2 and install SUP720 and keep running with Hybrid. I need a stable CatOS and IOS to run in SUP720.
2. Wait for a week and do the conversion to native.
1. Convert the SUP 2 to native and after
2. install SUP720
Any suggestions, ideas, good documents for conversion, ...
I don't know if you already know that but the SupII and the Sup720 cards must be installed in differents slots.
I mean, Supervisor Engine 2 is installed in slot 1 and slot 2 but Supervisor Engine 720 is installed in slot 5 and slot 6 on the Catalyst 6509 switch chassis. So may be, you will have to move more than only the supervisor engine cards...
I went through a similar process except going from Sup1As to Sup720's (2 in the same box). And then going from Hybrid to Native at a later time. As far as your two options go, It is all a matter of your comfort level and what the customer expects regarding a longer downtime vs. 2 shorter, etc. But, there is a fair amount of work involved in going from Hybrid to Native, so if I were to do it again, I would probably do it in 2 steps again.
The biggest thing to remember is that your config files will not work from CatOS to IOS, so I made scripts/config files up in wordpad that I just pasted in through console to get all the configs on the physical interfaces. That limited my downtime by a good amount. I may have heard something of a conversion tool, but I never found it and this manual way seemed to work pretty good.
Random things I learned:
Due to the space the new native images take (~40M) I had to use the sup-bootflash: to store the files and to boot from.
One big thing to check before you proceed is if your fan unit in your 6509 will support the Sup720's. Not sure about the diff between sup2 and sup1 in this regard, but I had to upgrade. It'll allow 300secs before shutdown if the fans are not adequate. Also check your power supplies to verify they are powerful enough to handle the load of the new SUP's as well. Good to know before the downtime.
This is if you have 2 sup's in the same box, which I don't know if you do: When I changed from Hybrid to Native, I chose to take one sup720 out and upgrade the other. Once it was upgraded, I configured it (with my scripts)for the new IOS and checked functionality. I then removed that one and upgraded the second. I pulled the second out, started the first up and when I installed the other, the configurations sync'd and I was good to go. I did it this way so that I would have a way back if for some reason I had a problem with the upgrade or configuration conversion to support Native.
Not sure if this is recommended, but it's the way I felt most comfortable in my environment.
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