IOS

[pcfreak49]

I have a question does anyone know sometimes the difference between ios ED and MD versions

[ahmedshoaib]

Early Deployment (ED): These releases provide both new features and new platform support in addition to bug fixes.

Maintenance Deployment (MD): These releases are used to provide additional support for bug fixes and ongoing software maintenance.

With IOS 15 and later, both the LD and GD deployments will be retired. New releases will be considered either ED or MD. The IOS train paths have also been consolidated. With earlier versions of IOS, the different ED (T trains; for instance, 12.4T) and MD (not T trains; for instance, 12.4) has different code bases. With IOS 15 and later, the code bases will be consolidated. MD releases (called M releases, or extended release) will be released and have a 44-month support window, whereas ED (T releases, or standard release) will have a 18-month support window.

[pcfreak49]

Okay thanks, there are so many different versions of it, because I want my ios my two cisco router 890 upgrade on one state-c890 universalk9-mz.150-1.M2.bin and other c890-universalk9-mz.151- 1.T2.bin that want to upgrade

[ahmedshoaib]

Hi;

Always go for Cisco suggested IOS.For your case Cisco 800 series Router 15.4.3M5 is Cisco suggested IOS.

Thanks & Best regards;

[pcfreak49]

For any two routers are there two different ios on?

[M02@rt37]

Hello @pcfreak49 

--ED stand for Early Deployment:

Software releases that provide new features and new platform support in addition to bug fixes.

--MD stand Maintenance Deployment:

Software release that provides bug fix support and ongoing software maintenance.

Source: https://www.ciscopress.com/articles/article.asp?p=2106547