I am using a PA-2FE-FX port on 7507MX router.When the fibre cable is connected ,then the line protocol is down.But when the speed is 10Mb, the line protocol is up irrespective of cable connected or not.But ping is not working when cable is present and line protocol is up. The IOS is 12.0(30)S1. The VIP is VIP4-50.
Why the interface is not coming up for 100Mb.?
Please help in troublshooting the issue.