I have a CSS 11501 running 08.10.1.06. Is there a way to renew the existing SSL certificate on the box or must I create a new one? All the doc I've read basically treats renewing the same as creating a new cert. Thanks for your help.
In the world of SSL certificates the concept of renewing doesn't exist. You always need to create a new certificate and import it to replace the old one.
To generate this new certificate, you can either use the old private key or create a new one. If you use a new one, then, make sure to also import it along with the new certificate.