Configure MPLS VPN on Ethernet VLAN interfaces
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Posted by FX on June 15, 2008, 10:35 am
Please log in for more thread options encapsulation. then i tried Applying VRF (part of MPLS VPN) to it, and it worked without giving error. But I believe, VPN isnt supported on VLAN interfaces.. it doesnt make sense to have L3 tunneling inside L2. I dont know if this configuration works in real, but it is accpeted by cisco CLI. Any ideas? | |||||||||||||
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Posted by Thrill5 on June 15, 2008, 11:33 pm
Please log in for more thread options own routing table and VRF's don't mix or share routes. They are supported on VLAN, dot1q, and physical interfaces on versions of IOS that support VRF's. MPLS networks add a "tag" to the packets which identify the VRF the encapsulated packet belongs to. Without VRF's, VPN's wouldn't work but I suspect that what you have configured is not going to work the way you think. | |||||||||||||
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Posted by Stephen on June 16, 2008, 5:58 pm
Please log in for more thread options wrote:
>I created Ethernet subinterfaces with VLAN and isl/dot1q
>encapsulation. >then i tried Applying VRF (part of MPLS VPN) to it, and it worked >without giving error. what you probably have is each vlan can be bound as an interface to a VRF. >But I believe, VPN isnt supported on VLAN interfaces.. it doesnt make
>sense to have L3 tunneling inside L2. what you have is vlans which are logical interfaces to the different emulated routers in each VRF. FWIW the way we support multiple VPNs to a site with Ethernet WAN access is to extend each VRF from PE to CE as a different VLAN tag >I dont know if this configuration works in real, but it is accpeted by
>cisco CLI. it does work. it does not need VPNs or MPLS to be useful. >
>Any ideas? for example we run management in 1 VRF in a L3 switch, and customer traffic in another. 2 logical routing instances in different VRFs, with different routing tables. -- Regards stephen_hope@xyzworld.com - replace xyz with ntl | |||||||||||||
> encapsulation.
> then i tried Applying VRF (part of MPLS VPN) to it, and it worked
> without giving error.
> But I believe, VPN isnt supported on VLAN interfaces.. it doesnt make
> sense to have L3 tunneling inside L2.
> I dont know if this configuration works in real, but it is accpeted by
> cisco CLI.
>
> Any ideas?