Fw: ISL Trunk on a 2500

[thangs]

I would suggest you to use a multihomed PC with two NIC,connect your NIC'S TO THE TWO VLANS respectively and enable IP forwarding between the NIC'S,But this will allow all host from VLAN-1 to communicate with VLAN-2 and vice-versa.   If you want have a control on the hosts communicating from VLAN-1 and VLAN-2,Then you can install a firewall on the same multihomed PC.     I feel this could be a better solution than going for a additional router.     Thanks   Thangavel   ----- Original Message ----- From: Russell Lusignan Newsgroups: groupstudy.cisco To: [EMAIL PROTECTED] Sent: Tuesday, October 24, 2000 9:43 AM Subject: Re: ISL Trunk on a 2500 There are no FE interfaces that are avaiable for the 2500's..  if you want to route between the VLANs, the easiest way is to connect a router to each VLAN via the Ethernet interface, connect those 2 routers together with a back-to-back DCE/DTE cable on the serial interfaces. Enable a routing protocol and assuming you have numbered your subnets properly, then anything on those two vlans can be routed...   You could even hook the 3rd router to a 3rd vlan and connect it's serial port to one of the other 2500s... then you can router 3 subnets between 3 routers..   Hope that helps Russ... "Juan Blanco" <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Folks,       I need help, I have 3 2500 router and 1 2900 switch, I want to be able to route between two vlans, I don't have a 100mb/s Ethernet interface on any of my routers.   Questions:           1 There is a 100mb/s interface available for the 2500           2 If there is not a 100mb/s for the 2500 then there is a workaround to be able to do the same thing.     Thanks in advance for your response.....     Juan