Only when you use a 4000 switch in your setup, then you cant use ISL
encapsulation, cause it doesn't understand it.
With a 4000 switch you'll need to go with dot1q encapsulation.
JT
-----Original Message-----
From: Dale Holmes [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, August 29, 2000 9:27 PM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: Re: VLAN's
You can't just make a switch port a member of all the VLAN's and hang a
router off it to route traffic between VLAN's.
The router and switch must have a way to exchange VLAN information in order
for you to route between VLAN's. You need to connect the router on a trunk
link. This link must be a Fast Ethernet link, and configured for ISL
trunking.
Then you configure the router with subinterfaces for each VLAN and use ISL
encapsulation.
Configs should be readily available on CCO.
Dale
[=`)
>From: "sujar khmar" <[EMAIL PROTECTED]>
>Reply-To: "sujar khmar" <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: VLAN's
>Date: Tue, 29 Aug 2000 14:56:29 -0400
>
>Group,
> I have a catalyst 3524 switch in my practice lab set up with four
>vlans
>(1-4). One port is a member of all vlans and that is the router port. In
>what I have learned you should be able to be a node on vlan 2 and be able
>to
>go out the vlan2 port on the switch to the router and back to the vlan 4
>port (or any other vlan for that matter) and reach a node on vlan 4. I
>said should be able to because it doesn't work that way right now for me.
>I
>can see every node on the network except the nodes on vlan 1, 3-4. I have
>deduced that it isn't being routed back into the appropriate port. All
>these networks are on the same subnet, but since it's not a 5000 so I can't
>assign a different subnet.
> Am I way off base here? My question really is how can I route vlan 1
>back to vlan 2 via one ethernet port on the router back to the other vlans.
>
>
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