Part 2: Troubleshoot Layer 3 COHI'IECIIVIW In Part 2, you will verify that Layer 3 connectivity is established on all interfaces. You will need to test both IPv4 and IPv6 connectivity for all device interfaces. Note: All serial interfaces should be set with a bandwidth of 128 Kbr's. The clock rate on the DCE interface should be set to 128000. Step 1: Verify that the interfaces listed in the Addressing Table are active and configured with correct IP address information. a. Issue the show ip interface brief command on all routers to verify that the interfaces are in an upr'up state. Record your findings. a. Issue the show run interface command to verify IP address assignments on all router interfaces. Compare the interface IP addresses against the Addressing Table and verify the subnet mask assignments. For IPv6, verify that the link-local address has been assigned. Record your findings