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On a network with a single edge router, it is possible to implement source-specific routing by manual manipulation of routing tables. [6] With multiple routers, explicit support for source-specific routing is required in the routing protocol. As of early 2016, there are two routing protocols that implement support for source-specific routing:
The link-state protocol is performed by every switching node in the network (i.e., nodes which are prepared to forward packets; in the Internet, these are called routers). [3] The basic concept of link-state routing is that every node constructs a map of the connectivity to the network in the form of a graph , showing which nodes are connected ...
A routing protocol specifies how routers communicate with each other to distribute information that enables them to select paths between nodes on a computer network. Routers perform the traffic directing functions on the Internet; data packets are forwarded through the networks of the internet from router to router until they reach their ...
An interior gateway protocol (IGP) or interior routing protocol is a type of routing protocol used for exchanging routing table information between gateways (commonly routers) within an autonomous system (for example, a system of corporate local area networks). [1] This routing information can then be used to route network-layer protocols like IP.
The general convention is for network hubs, bridges and switches to use the MDI-X configuration, while all other nodes such as personal computers, workstations, servers and routers use an MDI interface. Some routers and other devices had an uplink/normal switch to go back and forth between MDI and MDI-X on a specific port. [1]
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).
Standard link-state database (LSDB) flooding mechanisms are used for distribution of opaque LSAs. Each of the three types has a different flooding scope. For all types of LSAs, there are 20-byte LSA headers. One of the fields of the LSA header is the link-state ID. Each router link is defined as one of four types: type 1, 2, 3, or 4.
In small networks it is a viable method for providing alternative routes to direct traffic when multiple routers exist. This is a simple but limited form of Teletraffic engineering . Static routing has applications in environments with many routes with infrequent changes as it reduces the delay it would take to synchronize the routes from ...