I took a quick look at marc021 and yes, I cannot ssh into 192.168.0.1 (rck00). Nor can I ssh into 192.168.0.3 (rck02).
In cases like this, the first thing to try is a retraining (sccBmc -i) and a reboot (sccBoot -l). I don't know if you are using the default SCC Linux or your own. If it still remain inaccessible, power cyle if you have the privilege. If not, flag it as a bug in our Bugzilla in the category "Marc Administration needed". Bugs in this category are treatyed as job tickets. We'll then power cycle and retrain and reboot for you.
It works. Thank you very much.