Adding some content to this after a discussion with Flemming:
Error message received:
May 10 08:26:09.700: %SSH-3-NO_MATCH: No matching mac found: client hmac-sha2-256,hmac-sha2-512,hmac-sha1,hmac-md5,hmac-sha2-256-96,hmac-sha2-512-96,hmac-ripemd160,hmac-sha1-96,hmac-md5-96 server hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com
From testing, we found that latest IOSes removed some old MAC algorithms therefore CLI analyzer doesn't connect anymore:
# IOS-XE 17.11.1a - KO
cube#show run all | inc ip ssh server algorithm mac
ip ssh server algorithm mac hmac-sha2-256-etm@openssh.com hmac-sha2-512-etm@openssh.com
# IOS-XE 17.09.03a - OK
cube#show run all | inc ip ssh server algorithm mac
ip ssh server algorithm mac hmac-sha2-256-etm@openssh.com hmac-sha2-512-etm@openssh.com hmac-sha2-256 hmac-sha2-512 hmac-sha1
Potential Workaround:
1) Add older versions of MAC algorithms back (might be UNSECURE and be aware of the risk)
ip ssh server algorithm mac hmac-sha2-256-etm@openssh.com hmac-sha2-512-etm@openssh.com hmac-sha2-256 hmac-sha2-512
