I did upgrade to version of IOS cat4000-i9k91s-mz.122-18.EW2.bin to cat4500-entservicesk9-mz.122-52.SG.bin at a catalyst 4507r engine IV.
Before i could to execute:
ssh 1.1.1.1, without problem.
But after upgrade i can't do that.
In catalyst 4507r:
-----------------
router_4507r#sh ip ssh
SSH Enabled - version 1.99
Authentication timeout: 120 secs; Authentication retries: 3
router_4507r#ssh 1.1.1.1
[Connection to 1.1.1.1 aborted: error status 0]
In router remote:
----------------
Router_remote#sh ip ssh
SSH Enabled - version 1.99
Authentication timeout: 120 secs; Authentication retries: 3
