Network DNA Share : MPLS LAB
NETWORK DNA SHARE : MPLS LAB
What MPLS ?
MPLS is a method used in communication networks to speed up and manage traffic flow. Instead of relying only on traditional IP lookups at each router, MPLS assigns labels to packets. These labels carry information about the packet’s destination and priority, allowing routers (called Label Switch Routers, LSRs) to quickly make forwarding decisions without analyzing the packet’s full IP header.
How MPLS Works ?
- Label Assignment: When a packet enters the MPLS network, the first router (Label Edge Router, LER) assigns a short fixed length label based on the destination or other criteria.
- Label Switching: Intermediate LSRs forward the packet using the label rather than examining the IP address, swapping or modifying labels as needed.
- Label Removal: Upon reaching the exit point of the MPLS network, the final LER removes the label and forwards the packet using standard IP routing toward its final destination.
- MPLS supports multiple protocols, which is why it is called “multi-protocol.” It can carry IP packets, ATM, frame relay, and even Ethernet frames, making it flexible across different network types.
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