Tag Archives: Border Gateway Protocol

mpls: layer3-vpns, pe-ce routing protocol – ospf

Hello everyone! Right now I am going to show how to use OSPF as a PE-CE routing protocol when using MPLS VPNs. Here is our topology (same topology like with the other protocols used): Given: – a small MPLS backbone … Continue reading

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mpls: layer3-vpns, pe-ce routing protocol – eigrp

Hello everyone! Right now I am going to show how to use EIGRP as a PE-CE routing protocol when using MPLS VPNs. Here is our topology (same topology like with the other protocols used): Given: – a small MPLS backbone … Continue reading

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mpls: layer3-vpns, pe-ce routing protocol – rip

Hello everyone! Today I am going to show how to use a variety of routing protocols to be used as PE-CE routing protocol when you are connected to a MPLS VPN service provider or when you act as a provider. … Continue reading

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mpls: ospf sham link – why? and howto!

Hello everybody. Today I decided to write a post about OSPF SHAM LINK which is used in MPLS networks. Before giving a short explanation for what the sham link is used I will show you the topology as its a … Continue reading

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misc: optimzation in the layout of the blog labs

Hi everybody! I recognized that my scenarios with the cisco specific outputs the output mostly looked like crap. This way: Router#sh ip route Codes: C – connected, S – static, R – RIP, M – mobile, B – BGP D … Continue reading

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mpls: pseudowire emulation / any tansport over mpls – interconnecting sites via layer 2 – (part 1)

Hi everybody! Today I am going to introduce a new challenge that takes care of MPLS and pseudowire emulation. Challenge: – connect two sites via a MPLS VPN Backbone at layer 2 Given: – a “SP” network without MPLS capabilities … Continue reading

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mpls: simple and advanced inter-vrf routing/leaking

Hello everybody! Today I will spend some time in demonstrating how to route between separate VRF instances on a local router. Special prerequisites: – Understanding of VRF lite Topology: Our topology exists of three routers. Quite simple for the beginning … Continue reading

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