This is embarassing because I've been studying Cisco for a few years now, but we need some desperate help. We installed a new Catalyst 3550 switch split into 3 Vlans.
vlan 101 - office
vlan 102 - test lab
vlan 103 - it dept
The problem is that I can't seem to communicate properly between the Vlans. I have very sporadic problems that are difficult to explain.
For example, I am on Vlan103. I cannot ping my firewall on Vlan101. Also, when I log into the switch I can ping my workstation, but I cannot trace route my workstation. When I try I just get continuous * . I don't know. Here's my config, I thought maybe someone could point out a mistake.
In my day, I'm used to doing the router on a stick config, using a router to route between Vlans, with a trunk, and encapsulation. Here, I just have a L3 switch and I'm just trying to route between the Vlans through the one deviceThanks. Building-configuration.doc