To verify routing table entries and routing protocol operation on a Cisco router, you can use various commands. Here are some commonly used commands for this purpose:
1. Show IP Route:
```
Router# show ip route ```
2. Show IP Protocols:
```
Router# show ip protocols ```
3. Show IP RIP Database (for RIP) or Show IP EIGRP Topology (for EIGRP):
```
Router# show ip rip database Router# show ip eigrp topology ```
4. Show IP RIP/EIGRP Neighbors:
```
Router# show ip rip neighbors Router# show ip eigrp neighbors ```
5. Show IP RIP/EIGRP Interface:
```
Router# show ip rip interface Router# show ip eigrp interface ```
6. Debug Commands (for troubleshooting):
```
Router# debug ip rip Router# debug ip eigrp ```
7. Clear Commands (for resetting protocol processes):
```
Router# clear ip route Router# clear ip eigrp neighbors ```
8. Ping Tests:
```
Router# ping <destination_ip_address> ```
9. Traceroute:
```
Router# traceroute <destination_ip_address> ```
10. Show Commands for Specific Protocols:
By using these commands, you can verify routing table entries, check the operation of routing protocols, confirm neighbor adjacencies, monitor interface status, troubleshoot routing issues, and ensure network connectivity in your Cisco router environment.