I have an Internet router that I'm changing from a multilink T1 connection to a 20mb Ethernet connect. Provider handed me Ethernet and IP configuration. I configured the G0/1 interface and brought it up. Once I change the default route as follows:
no ip route 0.0.0.0 0.0.0.0 x.x.x.x <-- old IP address (t1)
ip route 0.0.0.0 0.0.0.0 x.x.x.x <-- new IP address (Ethernet)
From router I can ping outside address' and resolve with DNS. But from my network I cannot. I try nslook up and my internal DNS servers timeout becasue thay can't get to the external DNS farwarders. I can't ping the forwarders. So I can't get to the ouside. It appears to me the router is dropping my packets. Should I have cleared the routing table and arp table?
Current;y I'm back to the T1's becasue it is production hours, I can try some suggestions tonight.
All replies where helpfull, but I knew shortly after posting that what I had forgotten was that my providor needed to migrate my public address range to the new circuit. The config on my end was fine. Once I had them move my block everything was OK.
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