We have a cisco 4507 switch that also has a layer 3 and uplinks to a 2600 router on the access port on vlan 23. Since we needed to access the router on a new Vlan, vlan40, in addition to the vlan 23, we have created a trunk port and allowed both vlans in it..On a router, we have created 2 subinterfaces, one for vlan 23 & the other is for vlan 40. The 4507 switch has 4 more old vlans configured in addition to vlan 23 and the new vlan 40. Also, the switch is configured with EIGRP that advertises the subnets from the vlans to the router. When we connected the router cable to the new trunk port, the only devices that were operational and were able to go out were the ones on vlan23. Do we need to allow other vlans on the trunk as well?
Thanks.
