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Your search for MPLS returned 8 results.


BGP send-label in Inter AS scenarios

When playing with the MPLS Inter AS options I was obliged to use the neighbor x.x.x.x send-label command to exchange my label information between to AS. the interesting thing is that depending on how I was send the PE loopbacks in BGP I could loose connectivity between CEs. Lets play around with the send-label command to see how it really works. I built a 6 router ...

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L2VPN interworking Ethernet to Frame Relay

Internetwoking is a feature on L2VPN that makes possible to connect an ethernet interface to a frame relay interface for example. Not sure if this is in the scope of the CCIE but I fell on it while studying L2TPv3. We are going to configure an internetworking between R1 and R9, R1 will be on ethernet and R9 on frame relay. The topology is still based on the CsC ...

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Basic AToM configuration

Same as for L2TPv3 we'll go over the basic configuration of an AToM tunnel. In this example we'll only do ethernet to ethernet. We'll go in internetworking in another post. As for L2TPv3 we'll use the CsC configuration to setup our tunnels between R1 and R8 To manage this interconnection we’ll be using the interface G1/0 of R2 and G2/0 of R7. (more…)

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MPLS VPN Carrier Supporting Carrier: The BGP way

As usual when you study CCIE you need to know at least 2 ways to do everything, same for Carrier supporting Carrier (CsC). I know that InterNetwork Expert they say that the chances are slim to have MPLS VPN Carrier supporting Carrier but you never know, it's not the biggest bit of study anyway. MPLS VPN Carrier supporting Carrier Lab Topology So for our setup ...

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Using next-hop-unchanged

After the next-hop-self time to talk about next-hop-unchanged. I couldn't figure out the real life usage of this before I labbed it. In this setup I'll use my interAS topology R1 and R5 will be our route reflectors, they'll be peering through eBGP multihop only for address family vpvn4. R2 and R4 will be our ASBRs they'll peer through eBGP on address family ipv4 ...

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MPLS Forwarding Adjacency

Sometimes it can be useful to set up a MPLS Traffic Engineering tunnel between sites, but did you ever notice that by default the IGP will not consider those tunnels for traffic ? Did you ever try to change the OSPF cost of tunnel to force it to take traffic ? And it didn't work right ? Lets check that. We have a 7 routers setup, R1 and R7 will never be able to ...

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MPLS Traffic Engineering Affinity

We saw in a previous post how to set up a basic MPLS Traffic Engineering tunnel, we used explicit and dynamic path which worked very well but explicit path don't scale well and dynamic is too hazardous (you don't really know where your traffic goes). Hopefully for us the MPLS Traffic Engineering guys thought about it and added a function called MPLS Traffic Engine...

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MPLS traffic engineering

Covering the basics, how to set up a MPLS traffic engineering tunnel. In our example I'll be running ISIS as IGP and a 4 routers topology. Diagram Step 1: configure MPLS MPLS configuration is straightforward Globally (more…)

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