There are two major components to the MPLS architecture and they are control panel and data panel. The control panel has a complex function and is used to exchange the layer 3 routing information (RIP, OSPF, EIGRP, and IGRP) and labels (Label Distribution Protocol (LDP)). The data plane is used to forward the packets based on the destination address or labels.
The routers that are capable of routing and switching in the MPLS domain are called LSR (Label Switch Routers). This routing and switching takes place on the basis of label that has been attached to the router. The first LSR that the packets encounters, where the label is attached is known as the ingress router. The last LSR that the label encounters, where the label is removed from the …show more content…
This label attached tell the packet that the route the packet is supposed to take in the network. Label stacking is a concept where a label can be attached to e packet that already has a label. This concept is used when a packet is to be transmitted from a location A to location Z. there is a Label Switched Path (LSP) between A to Z through various LSR. But there are two routers, say D and S in the LSP and the next hop for router for D is S according to the LSP from A to Z. but actually there is another LSP in between D and S. a secong label is attached to the packet with D as the ingress node and S as the egress node. Thus the label stacking occurs between routers D and S. MPLS is capable of supporting multilevel label …show more content…
It is based on the simple technology of the label swapping paradigm. It has the capabilities to address some of the issues of traffic engineering over the IP networks. MPLS can also be combined with various technologies and can be used to address the issues related to traffic engineering. In MPLS the route that the packet is going to take is decided by the ingress router. As only one router is used to decide the route of the packet, sophisticated routing control capabilities can be introduced into the network. These paths introduced into the network are independent of the shortest route path that is designed based on the destination IP address. Due to this technique introduced fewer elements are required and the operation cost and the queuing delays are reduced. MPLS introduces the concept of traffic trunk in IP networks as one of the features for traffic engineering. In this concept the traffic belonging to a particular class is aggregated. The main issue of traffic engineering is to map the traffic on a given IP network topology. In MPLS the traffic is mapped on a given network as the route selection is made and the label switched path is
The routers that are capable of routing and switching in the MPLS domain are called LSR (Label Switch Routers). This routing and switching takes place on the basis of label that has been attached to the router. The first LSR that the packets encounters, where the label is attached is known as the ingress router. The last LSR that the label encounters, where the label is removed from the …show more content…
This label attached tell the packet that the route the packet is supposed to take in the network. Label stacking is a concept where a label can be attached to e packet that already has a label. This concept is used when a packet is to be transmitted from a location A to location Z. there is a Label Switched Path (LSP) between A to Z through various LSR. But there are two routers, say D and S in the LSP and the next hop for router for D is S according to the LSP from A to Z. but actually there is another LSP in between D and S. a secong label is attached to the packet with D as the ingress node and S as the egress node. Thus the label stacking occurs between routers D and S. MPLS is capable of supporting multilevel label …show more content…
It is based on the simple technology of the label swapping paradigm. It has the capabilities to address some of the issues of traffic engineering over the IP networks. MPLS can also be combined with various technologies and can be used to address the issues related to traffic engineering. In MPLS the route that the packet is going to take is decided by the ingress router. As only one router is used to decide the route of the packet, sophisticated routing control capabilities can be introduced into the network. These paths introduced into the network are independent of the shortest route path that is designed based on the destination IP address. Due to this technique introduced fewer elements are required and the operation cost and the queuing delays are reduced. MPLS introduces the concept of traffic trunk in IP networks as one of the features for traffic engineering. In this concept the traffic belonging to a particular class is aggregated. The main issue of traffic engineering is to map the traffic on a given IP network topology. In MPLS the traffic is mapped on a given network as the route selection is made and the label switched path is