[rancid] As one door closes, another opens... ssh failing with (some) Cisco devices after OS upgrade?

[John Heasley]

Am 16.05.2015 um 17:57 schrieb Randy Bush <randy at psg.com>:

>> There is an option you can pass to SSH ['-o 
>> KexAlgorithms=diffie-hellman-group14-sha1'] to allow it to connect to 
>> older versions of IOS. The error emitted by SSH isn't much help at all.
> 
> for really older images, e.g. those on a 2511, try
> 
>   ssh -1 <hostname>

Just on my mobile, so cant double check ATM, but there is a 'sshcmd' in cloginrc(5). I beleieve it can be made to pass other options, eg {ssh\ -o\ ....}. One can also use Host directives in ~/.ssh/config for many if not all ssh client options. Write again if these options dont work.