On occassion the folks at JMJ (our neighbors that use us for internet access) have lost their connectivity to the router. For whatever reason they are unable to get off of their subnet even though the interface is up and we can ping them. We have found that by shutting down the interface and bringing it back up clears the problem. The following information will guide you on how to fix the problem.

1. Telnet to router (waycross or sv-atl-rtr01)
2. Log onto router
3. Go to enable mode
4. Show status of interface (just for verification - if interface is 'up/line protocol is down' you have a wiring problem or either our interface is unplugged or their interface is unplugged - I imagine they connect us to a hub in their office)
   (interface should be 'up/line protocol is up' - if interface is 'administratively down', go back to configuration mode and type 'no shutdown' again. if interface is 'up/line protocol is down' - there is probably a cable problem)
5. Go to configure mode
6. Select interface (ethernet 1/0 - for jmj)
7. Shutdown interface
8. Enable interface
9. Exit configure mode
10. Show status of interface (interface should be up/line protocol is up)
11. Check with JMJ to ensure they can connect to internet.
12. If this does not work, get engineer.

• Password: *********
• sv-atl-rtr01>en
• Password:
• sv-atl-rtr01#show interfaces ethernet 1/0 (see interface information below)
• sv-atl-rtr01(config)#interface ethernet 1/0
• sv-atl-rtr01(config-if)#shutdown
• sv-atl-rtr01(config-if)#no shutdown
• sv-atl-rtr01(config-if)#^Z (this is a control Z which will exit you from configuration mode)
• sv-atl-rtr01#show interfaces ethernet 1/0

This is the output that you will receive after you type the command above: