We have a Cisco Router 1900, and our ISP told us that our config (below) has the wrong duplex setting. They want us to change it to 100 FULL.
1. What is the command to change the duplex to FULL (without restarting the router).
2. What if the link goes down, how do I revert back to the old settings (AUTO)?
description Internet via $ETH-WAN$$FW_OUTSIDE$
ip address 209.xx.xx.xx 255.255.255.252
ip access-group 101 in
no ip redirects
no ip proxy-arp
ip verify unicast reverse-path
ip flow ingress
no mop enabled