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Hello,
We are looking for a cisco switch model to implement VLANs. we have four interconnected sites, and each site will implement about vlans.
I think that theTD-S layer3 switch will do the job. But there is also theTD-E which have in addition the VRF-Lite functionality and costs double.
Is it interesting to opt for the VRF enabled switch and in which case can this function be used, if you can give me some examples.
Best regards.
Yes, VRF-lite is a feature that enables a service provider to support two or more VPNs, where IP addresses can be overlapped among the VPNs. VRF-lite uses input interfaces to distinguish routes for different VPNs and forms virtual packet-forwarding tables by associating one or more Layer3 interfaces with each VRF. Interfaces in a VRF can be either physical, such as Ethernet ports, or logical, such as VLAN SVIs, but a Layer3 interface cannot belong to more than one VRF at any time.
VRF-Lite support on Cat does not include the Provider Edge MPLS funcitonality. More specifically, MPLS label switching and MPLS control plane are not supported in the VRF-Lite implementation
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