ISL is not supported on 10mbs interfaces. You need the ISL header so that you retain the VLAN information. If you had a 100mbs interface is would look something like this. This would set up int fa0/0 as a trunk and it would be trunking VLAN 1,2,3.
int fa0/0.1 encapsulation isl 1 Ip address 10.0.1.1 255.255.255.0 int fa0/0.2 encapsulation isl 2 ip address 10.0.2.1 255.255.255.0 int fa0/0.3 encapsulation isl 3 ip address 10.0.3.1 255.255.255.0 router rip network 10.0.0.0 on the switch set up the port you are connecting to the router with as a trunk and make sure VLANS 1,2,3 are in it. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=49553&t=49533 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]