I set up a network with the following items:

1. 2621 ( IOS 12.7 )for VLAN routing
2. two 2950 ( IOS 12.0T)for three ip subnets
3. each subnet has a W2K DC Servers ( DNS service with Dynamic Update )

1 & 2 are configured dot1q

one subnet can ping other subnets with netBIOS computer name, but the other
subnets can not.

Anybody knows how to solve this qustion ?

Thank you