ADVANCED SERVICES

In this topic, we will talk about MPLS L3 VPN Central Services. At this point, if you are unfamiliar with MPLS then please read the first portion of this post here explaining in details how MPLS works. MPLS Central Services is also referred to as MPLS Common Services and its goal is mainly to allow distinct [ Read More ]

In this post, we will look into setting up MPLS VPN and use BGP as our routing protocol between the PE router and the CE router. We won’t go deeper into the MPLS VPN backbone configuration but just the PE-CE segment. At this point, if you are unfamiliar with MPLS VPN, please read this post here. [ Read More ]

In this post, we will look into setting up MPLS VPN and use OSPF as our routing protocol between the PE router and the CE router. We won’t go deeper into the MPLS VPN backbone configuration but just the PE-CE segment. At this point, if you are unfamiliar with MPLS VPN, please read this post here. [ Read More ]

In this post, we will look into setting up MPLS VPN and use EIGRP as our routing protocol between the PE router and the CE router. We won’t go deeper into the MPLS VPN backbone configuration but just the PE-CE segment. At this point, if you are unfamiliar with MPLS VPN, please read this post here. [ Read More ]

In this post, we will look into setting up MPLS VPN and use RIPv2 as our routing protocol between the PE router and the CE router. We won’t go deeper into the MPLS VPN backbone configuration but just the PE-CE segment. At this point, if you are unfamiliar with MPLS VPN, please read this post [ Read More ]

MPLS (Multiprotocol Label Switching) is technology which allows fast packet forwarding using “Labels” within a given network. VPN (Virtual Private Network) is then implemented to provide a connected oriented service by ensuring end-to-end reachability between non directly connected nodes. At this point, if you are unfamiliar with MPLS then please read the first portion of this [ Read More ]

An Offset List is routinely used to control path selection by influencing routing metrics of learned routes of either EIGRP or RIP. It is important to note that Offset List are only used with Distance Vector Protocol which means that we can not use it with OSPF as it is a Link State protocol. It [ Read More ]

Prefix lists are typically used in route-maps or packet filtering as they represent an alternative to access-lists. However, prefix-lists in comparison with access-lists allow us to match prefixes at a much more granular level. A prefix is a portion of an IP address, starting from the far left bit of the far left octet. So, [ Read More ]

A distribute-list is typically used to filter routing updates either inbound or outbound from a router perspectives usually running some form of dynamic routing protocol. Even though there is the keyword “distribute”, this is not to be confused with route distribution. Again, I think the choice of the terms here could have been better but that’s my [ Read More ]

Route Maps are characterized as one of the most powerful tool in Cisco IOS toolkit and the reason for it is because they can do a large number of things for us. If you are familiar with the “IF then ELSE” statements in Programming Language then understanding Route Maps will be a breeze for you. IF a [ Read More ]