MikroTik 2009 Q: Why should you care about MPLS now? A: Probably because of the availability and … interface vpls add name=R1toR2 remote-peer=10.1.1.3 \ vpls-id=10:10 /interface bridge port .. MikroTik 2009 Networking There are 3 networking methods available to manage computer networks: Routing Protocols: RIP, OSPF, BGP Bridging Protocols: STP, RSTP, MESH Switching Protocols: MPLS , ATM, Frame Relay

Switching Switching is a network communications method that groups all transmitted data (no matter of content, type, or structure) into suitably-sized blocks Each block is then transmitted over the network independently of each other Network is capable of allocating transmission resources as needed, in this way optimizing utilization of link capacity and robustness of communication MPLS MPLS stands for Multi Protocol Label Switching MPLS is a packet forwarding method based on labels attached to the packet and a label forwarding table with minimal lookup overhead With MPLS the packet forwarding decision is no longer based on IP header and routing table Efficiency of forwarding process is the main benefit of MPLS © MikroTik 2009 8 MPLS Header Also called Layer2.5 (because it is placed between OSI Layer2 and Layer3) Header can consist of one or several 32bit shims: Label (20 bits) EXP (3 bits) - Class of Service End of stack flag(1 bit) - is it last label? TTL (8 bits) L3 MPLS L2 TTL S EXP Label …. MPLS VPLS Bandwidth improvements Smaller Overhead (Ethernet+2 labels) Can ask provider for guaranteed VPLS bandwidth Each new site only requires correct PE configuration All the work is done by the ISP ISP is ready to sell new type of service ISP Site 1 Site 2 CE CE GW GW Site 3 CE GW PE PE …

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