Partially possible but not scalable solution Single topology can be created per IP routing domain. With MPLS, providers can create (with use of different labels and label stacks) different topologies & services (MPLS-TE, MPLS VPNs). Lower latency than traditional IP routing LSP, LDP/TDP, VRF, LFIB, Push, Swap and Pop. MPLS can allow communication across overlapping IP addresses of multiple customersĭoes not allow communication across overlapping address of different customers Labels inserted between layer 2 and Layer 3 (hence layer 2.5) No dedicated path is established, packet is routed based on IP addresses.īuilds LFIB (Label Forwarding Information Base) table using LDP protocol. Routing based on the destination address for entries in the routing table.Įstablishes LSP (dedicated path) before data can flow. Switching traffic based on labels advertised by LDP Related- Public IP vs Private IP Comparison Table : MPLS vs IP Routingīelow table provides the detailed comparison between MPLS and IP routing – PARAMETER

Traditional routing performs routing decision based on IP header, MPLS considers MPLS header with packets and hence takes all forwarding decisions based on the MPLS header, unlike traditional routing.

This type of forwarding is more efficient as it avoids overloading the CPU.

MPLS is much faster than traditional IP Routing, as it is based on the concept of the label to allow forwarding (rather switching) of packets.

In MPLS technology, the labels are inserted between layer 2 and layer 3 of TCP/IP model hence it lies at layer 2.5 (thus also known as “shim” protocol).

While in IP routing, the information is stored in routing table.

MPLS Builds LFIB (Label Forwarding Information Base) table using LDP protocol.

While in IP routing, no such defined path is formed.

This path is known as the LSP (Label Switched Path).

In MPLS, a fixed and dedicated path is established for the routing of network packets.

While in IP routing, it is based on the destination IP address.

In MPLS, the switching of traffic is based on the labels assigned to the network packets.

Let’s discuss the main points of differences between the two technologies. Related – MPLS vs Internet Difference between MPLS and IP Routing Thus, the routing is done on the basis of IP address using hop-by-hop mechanism. While traditional IP Routing uses forwarding packets of packets based on the destination IP address, routing lookups are performed on every hop and every router may need full Internet routing information. Related – Top MPLS Interview Questions IP Routing

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