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3800RG, Cisco Routers and Static IPs
I've got a block of 8 static IPs, one A.B.C.64 /29 - A.B.C.70 is my default gateway, my Cisco E2000 router runs my main home LAN and is doing just fine. I am using two of the RG's ports to run my U-verse set-top boxes via Ethernet, one for the WAN link on the E2000 and one goes to a 4-port DLink switch that then goes to a Cisco 2621XM. Everythings works super except the 2621... I have fa0/1 setup to A.B.C.66 (the E2000 is .65, btw) and I have fa0/0 set to 172.16.1.1 /24 and one PC connected to it set to 172.16.1.10 /24 with a default gateway of 172.16.1.1. I can ping A.B.C.70 from the 2621 just fine and I can ping an outside address such as Google, Apple, etc just fine. What is puzzling me to no end is why I CAN ping A.B.C.66 from the PC, and I CANNOT ping A.B.C.70???? What the heck, it's a directly connected interface; I cannot for the life of me understand this. The only thing I can come up with is that somehow the RG is not setting up a return route.