IOS versioning
Hello,
I can't get a grip on the IOS versioning numbering.
Taking 12.2(44)SE3 as an example, (44) sould be maintainance number and the 3 of SE3 sould be the rebuild number. What is the difference beween these?
An higher maintainance number of a software train (i.e. 12.2SE) doesn't mean a 'newer' release.
For an 2960 version 12.2(58)SE2 seems te be older than 12.2(55)SE8.
Can someone plase explane?
Thanx
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Cisco often maintains multiple releases, concurrently. That's why an "older" version/release, such as your 12.2(58)SE2 could have been released earlier than 12.2(55)SE8. However, perhaps what's important is how "mature" a software train is. In theory, 12.2(55)SE8 might be more "solid" than 12.2(58)SE2, not because it's released later, but because is the 8th "patch" vs. a 2nd "patch". (Might not too, depends how "solid" the original release was too.)
Picking an IOS is usually best done by using the release that contains all your required features, and then using the latest release of that. So, for example, if you didn't need (58) features, but both it and (55) have the features you need, you might run (55), again because it's been out longer and there's been (hopefully) more time for bugs to become known, and corrected.
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