This is driving me mad at the moment and it should be very easy!
I've got 3 switches (Cisco Catalyst 3750 with ADVIPSERVICESK):
3750-HQ1 with 3750-HQ2 and 3750-3 connected to it via dot1q trunk ports.
On 3750-HQ1 I have an interface called VLAN99 with IP address 10.0.0.241
On 3750-HQ2 I have an interface called VLAN99 with IP address 10.0.0.242
On 3750-3 I have an interface called VLAN99 with IP address 10.0.0.243
I can ping 10.0.0.242 from 3750-HQ1 and vice versa, but we cannot get any pings from/to 3750-3 on VLAN99.
Please have a look at the three config files attached and see if there's anything blindingly obvious that I'm obviously too blind to see?
I've been banging my head against this all day!