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An ingress router is a label switch router that is a starting point (source) for a given label-switched path (LSP). An ingress router may be an egress router or an intermediate router for any other LSP(s). Hence the role of ingress and egress routers is LSP specific.
An egress router may be an ingress router or an intermediate router for any other LSP(s). Hence the role of egress and ingress routers is LSP specific. Usually, the MPLS label is attached with an IP packet at the ingress router and removed at the egress router, whereas label swapping is performed on the intermediate routers.
The router which first prefixes the MPLS header to a packet is an ingress router. The last router in an LSP, which pops the label from the packet, is called an egress router . Routers in between, which need only swap labels, are called transit routers or label switch routers (LSRs).
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Label Distribution Protocol (LDP) is a protocol in which routers capable of Multiprotocol Label Switching (MPLS) exchange label mapping information. Two routers with an established session are called LDP peers and the exchange of information is bi-directional.
In the former case, the head-end router is the input or ingress router. In the latter case the tail-end represents the output or egress router in the path. There are a few protection techniques for MPLS [ 8 ] very similar in the general concept to those for Optical Mesh Networks , such as link protection (e.g., MPLS local protection ) and path ...
Ingress (signal leakage), the passage of an outside signal into a coaxial cable; Ingress filtering, a computer network packet filtering technique; Ingress protection rating, a protection level that electrical appliances provide against intrusion of physical objects; Ingress router, a source label switch router
Some devices (such as wireless routers) will have unique default router usernames and passwords printed on a sticker, which is more secure than a common default password. Some vendors will however derive the password from the device's MAC address using a known algorithm, in which case the password can also be easily reproduced by attackers. [8]