I have one core switch 6509E and one SUP 720-3B. The IOS Ver is 122-18.SXF12. I would like to install second SUP 720-3B for secondary in the same switch. Can anyone help me which feature (SSO, PRP, PRP+ or NSF with SSO)would be the best solution for active standby without waiting for 1 to min to reboot the box. Thanks
