I have to replace my cisco 8540 switch with any other suitable switch/router, we are only using this switch to split PVC's.
155M Wan comes into this from my service provider, into 8540 and here we split into 3 differnt pvc which then sepreatley connected to 7204 and 3640 routers. can someone suggust me any alternative product.
Yes I understand. So my suggestion to either keep the 8540 until supported, or redesign the network so that the other router uses ethernet and not ATM. For example if the PVC are used into separate domains/address, etc, you can use VRF to make so the receiving router trats the 3 PVC as if it was really three virtual routers.
We cant keep these switches cos they are not under contract and start failling ocationally.
I do understand your point to create 3 vrf, which will be easy if we use MPLS on our network/8540switch , our service provider is MPLS but their D-marc point is in london exchange and from their they deliver 155M over ATM to us.the only way I can see this is if they extend their D-marc point in our building and from their we can have 3 ethernet cables to our 3 different domain in routers/
You don't need MPLS for VRF. This is called VRF-lite. Basically you associate two or more interfaces or subinterfaces to a VRF, the routing tables will be separated and that's it. If you need to redistribute something between the routing tables you can do that as well.
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