Multiprotocol Label Switching, or MPLS, is a networking technology that manages forwarding over private wide area networks by utilizing the shortest path based on "labels," as opposed to network addresses. its only running on WAN network. This can only be implemented with any one routing protocol. Using Label Distribution Protocol. LDP is a protocol that automatically generates and exchanges labels between routers. Each router will locally generate labels for its prefixes and will then advertise the label values to its neighbors.

1. Multiprotocol label
switching (MPLS)
VIGNESH KUMAR
SILICON CHIPS TAMILAN

2. Multiprotocol label switching
 Multiprotocol Label Switching, or MPLS, is a networking technology that manages
forwarding over private wide area networks by utilizing the shortest path based
on "labels," as opposed to network addresses.
 its only running on WAN network.
 This can only be implemented with any one routing protocol.
 Using Label Distribution Protocol.
 LDP is a protocol that automatically generates and exchanges labels between
routers. Each router will locally generate labels for its prefixes and will then
advertise the label values to its neighbors.

3. LDP exchanges label information after establishing a neighbor adjacency,
similar to many other protocols. However, it functions somewhat differently than other
protocols.

5. Label Details

6. MPLS Label Switching
 Mainly, there are three common jobs for MPLS Label Switching. These are:
 Push
 Swap
 Pop

7. Push , Swap , Pop
 Push is the process of Label addition between the L2 and L3 Header of the traffic
packet. In other words, locating label to the packet and MPLS starting point is
here. Push process is done by PE Routers. PE takes the packet from Customer and with
MPLS Label, PE makes this packet an MPLS packet.
 Swap is the process of label swapping in MPLS network. The backbone routers of the
Service Provider is responsible from this job. Labels are swapped between these P
Routers, through the LSP (Label Switch Path) that is built between border PE Routers.
 Pop is the process of the label exit. The last label that comes from swapping is
removed with this process. And the pure traffic is sent to the customer. Pop process is
done at PE routers. But sometimes, this can be changed and before the PE router, at
the last P Router, Pop process is done. This specific process is called PHP (Penultimate
Hop Popping).