I'm having a problem getting a Cisco 1841 connected to an ADVA WAN box provided by TWTelecom. They've given me instructions to force the fasteternet0/0 100 full duplex on interface 0/0, which I have done. When I boot the cisco, there is link and activity during boot, then the Cisco port lights black out while it resets the ports, and once they come back on, the link doesn't remake.
If I connect a laptop to the ADVA, the link makes and it can communicate. Laptop NIC properties show a 100mb connection. If I connect a laptop to the fastethernet0/0, the link makes and it can communicate. Lights on 0/0 show 100 mb and full duplex connection.
The config file for that interface is very basic.
! interface FastEthernet0/0 ip address 10.0.2.2 255.255.255.0 speed 100 full-duplex service-policy output EGRESS ! router rip version 2 network 10.0.0.0 no auto-summary !
What would keep the ADVA and Cisco from making a successful link once the Cisco completes its boot?