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IP forwarding algorithms in most routing software determine a route through a shortest path algorithm. In routers, packets arriving at an interface are examined for source and destination addressing and queued to the appropriate outgoing interface according to their destination address and a set of rules and performance metrics.
In computing, route is a command used to view and manipulate the IP routing table in Unix-like and Microsoft Windows [1] operating systems and also in IBM OS/2 and ReactOS. [2] Manual manipulation of the routing table is characteristic of static routing .
For example, the U flag indicates that an IP route is up. filtering criteria: Access-control lists associated with the route; interface: Such as eth0 for the first Ethernet card, eth1 for the second Ethernet card, etc. Shown below is an example of what the table above could look like on a computer connected to the internet via a home router:
For example, the sample diagram does not indicate the physical type of connection between the PCs and the switch, but since a modern LAN is depicted, Ethernet may be assumed. If the same style of line was used in a WAN (wide area network) diagram, however, it may indicate a different type of connection.
Routing protocols, according to the OSI routing framework, are layer management protocols for the network layer, regardless of their transport mechanism: IS-IS runs on the data link layer (Layer 2) Open Shortest Path First (OSPF) is encapsulated in IP, but runs only on the IPv4 subnet, while the IPv6 version runs on the link using only link ...
Otherwise, it will take precedence over all routing protocols and routes issued from a routing protocol will not be inserted into the routing table. [3] The example below shows how to configure the administrative distance to 254 to specify that it should only be used as a last resort. R1(config)# ip route 10.0.0.0 255.0.0.0 backupLink 1 254
Example of a multicast network architecture. Protocol-Independent Multicast (PIM) is a family of multicast routing protocols for Internet Protocol (IP) networks that provide one-to-many and many-to-many distribution of data over a LAN, WAN or the Internet.
Implementers generally have a numerical preference, which Cisco calls an "administrative distance", for route selection. The lower the preference, the more desirable the route. Cisco's IOS [8] implementation makes exterior BGP the most preferred source of dynamic routing information, while Nortel RS [9] makes intra-area OSPF most preferred.