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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
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
Posted in MPLS, Routing
Tagged Border Gateway Protocol, eigrp, eigrpo, Enhanced Interior Gateway Routing Protocol, layer 3 vpn, ldp, MPLS, mpls ip, mpls ldp, mpls vpn, Multiprotocol Label Switching, mutual, Open Shortest Path First, PE router, pe-ce, redistribution, Router, Virtual private network, Virtual Routing and Forwarding, vpn
1 Comment
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
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
Posted in MPLS
Tagged bgp, Border Gateway Protocol, Internet service provider, IP address, ldp, MP BGP, MPLS, mpls ip, mpls ldp, Multiprotocol Label Switching, mutual redistribution, Open Shortest Path First, PE router, redistribution, Router, sham, sham link, shamlink, Virtual Routing and Forwarding
18 Comments
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
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
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
Posted in MPLS, Uncategorized
Tagged bgp, Border Gateway Protocol, Enhanced Interior Gateway Routing Protocol, Fast Ethernet, Gateway, IP address, IS-IS, leaking, MP BGP, MPBGP, MPLS, mpls vpn, Open Shortest Path First, route-import, route-leaking, route-target export, Static routing, vrf, vrf lite
8 Comments
rip: seperate ways to inject a default-route
Hi! Right now I am going to lab up default-routing with RIP. By the way…NO this post has nothing to do with the song “seperate ways” by “moby” :)…although its a very good song. I am going to show which … Continue reading
rip: route-filtering based on advertising router (extended acls)
Hi! Today I will lab a little topology with RIP. What I am going to do is to filter incoming routing updates based on the advertising router. In BGP for example it is quite easy to do that due to … Continue reading
REMINDER: administrative distances of routing protocols
ADs of the routing protocols: 0 – connected 1 – static 5 – eigrp summary 20 – ebgp 90 – eigrp 100 – igrp 115 – is-is 110 – ospf 120 – rip 140 – egp 160 – on demand … Continue reading
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