EIGRP over Frame-Relay point-to-point Sub-if

[NettableWalker]

Hi Everyone,

I am trying to get EIGRP to form adjacencies over a Frame-Relay connection using point-to-point Sub-interfaces.

I suspect that no multicast traffic is passing across this link..

I know for multi-point you must specify the "Broadcast" keyword to allow multicasts but what needs to be done in this case to allow EIGRP across?

My config is:

interface FastEthernet0
description Local LAN
ip address 10.0.0.22 255.255.0.0
speed 100
full-duplex
!
interface Serial0
description WAN Circuit
bandwidth 2048
no ip address
encapsulation frame-relay IETF
no fair-queue
frame-relay lmi-type ansi
!
interface Serial0.123 point-to-point
ip unnumbered FastEthernet0
no cdp enable
frame-relay interface-dlci 123 IETF
!
router eigrp 10
network 10.0.0.0
no auto-summary



MCP,CCA, Net+, 1 quarter CCNP...

 

[jneiberger]

Nothing needs to be done for this to work beyond what you already have configured. If the PVC is up and you have the other side correctly configured then this should be working. Turn on EIGRP debugging to see if you can spot the problem.

John

 

[NettableWalker]

Thanks for the reply John. That's exactly what i was expecting, Frame Relay is easy and so is EIGRP: it should just work.

But the ISP has now told me that because it's MPLS ("IPClear") only BGP and static routes are supported across the WAN.

Maybe i'll try some kind of tunnel across it.

MCP,CCA, Net+, 1 quarter CCNP...

 

[jneiberger]

Oh, this is a provider-based VPN solution. As you discovered, EIGRP requires directly-attached neighbors. EIGRP traffic will not traverse a network of non-EIGRP routers unless you build tunnels just as you suggest.

Why not just run BGP? It would be a lot simpler than dealing with EIGRP and a whole bunch of tunnels.

Actually, without static routes or BGP, you won't even be able to setup your tunnels in the first place because your routers (and your provider's routers) will have no idea how to get to the other end of the tunnel.

I would recommend BGP. That puts you in control of your routing and you don't have to involve the provider to add or subtract networks.