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Routing Problem...maybe

houstonrob
Level 1
Level 1

I have 4 subnets (well, really I have quite a few more, but showing 3 illustrates the point): 172.16.3.64/26, 172.16.3.128/26, 172.16.3.192/26, and 10.6.0.0/24. I’m having a problem where the 10.6.0.0 subnet isn’t able to route to the Internet and I can’t figure out why. The path to the Internet is my pc -> Cisco 4506 -> Cisco 3825 -> Cisco ASA -> Cisco 2600 ->Internet. If anyone can give me any new ideas I’d would greatly appreciate it. There are actually fifteen '172.16.x.x' subnets that can all route to the Internet just fine, it's just this one 10 network that is giving me huge problems.

I've attached the routing table of the 3825, the ASA, and the 4506 in case they're helpful.

17 Replies 17

Okay, so we've deduced that the interface works because you're sending traffic to a dhcp server on that vlan. Now, what switch is that server connected to? Can that server get to the internet? Can you plug into the same switch that it's connected to and get out on vlan 90? What's the ip address of your laptop? Do you get an address when you configure yourself as an access port to vlan 90?

HTH, John *** Please rate all useful posts ***

The server is connected to the 4506 and it can't get to the internet unless I give it a different IP and put it in a different Vlan (other than 90)

I can't get out to the Internet on any switch if I'm in Vlan 90 but internal network communication is fine regardless what Vlan I'm in. I have a number of servers in Vlan 90 now that can all communicate with each other and with pc's on various other Vlans connected on different floors to the 3750 stacks.

All Vlans are able to get IP's via DHCP from 10.6.0.1

What port does g0/0 from the router connect to on the switch? How is that port on the switch configured? Didn't you say that you couldn't ping the switch if you sourced from the router's g0/0 interface? I'm leaning toward deleting the svi and recreating it, because at this point it doesn't make sense.

HTH, John *** Please rate all useful posts ***