Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
New Member

In router ios. what is best? 12.1(19)E or E1, 12.1(19) or (20) ?

hi.

We have 6509MSFC2(CatOS + MSFC IOS) and many routers..

In Security Advisory, MSFC2 IOS --> 12.1(19)E recommand.

but somebody, MSFC2 IOS ---> 12.1(19)E1

and

We have many routers.

In Security Advisory, router IOS --> 12.1(19) recommand.

but somebody, router IOS --> 12.1(20)

what version is best?

12.1(19)E or 12.1(19)E1 ?

12.1(19) or 12.1(20) ?

Sorry, I can english a little. T.T

thanks.

1 REPLY
Silver

Re: In router ios. what is best? 12.1(19)E or E1, 12.1(19) or (2

For MSFC2 I recommend to use IOS 12.1(19)E1 because IOS 12.1(19)E has at least one serious software issue and some others minor issues. All they are solved/fixed in IOS 12.1(19)E1.

Maybe your platform/hardware configuration is not affected, but I wouldn't risk and I'd use 12.1(19)E1

For routers, I'm not sure what IOS to use. I think it depends on every router model.

HTH

170
Views
4
Helpful
1
Replies
CreatePlease to create content