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Route table showing internet BGP routes . In computer networking, a routing table, or routing information base (RIB), is a data table stored in a router or a network host that lists the routes to particular network destinations, and in some cases, metrics (distances) associated with those routes.
While a router may run multiple routing protocols on the same device, it is necessary for the router to implement a process to ensure that multiple routes, pointing to the same destination do not simultaneously exist in the routing table. Each process running on a router advertises its administrative distance value to the local router. The ...
To take the Cisco 12000 example, depending on how you define "routing table", in a configuration that has 8 line (forwarding) cards and a redundant control processor with stateful failover, different definitions could lead a reasonable person to say that the device has 1, 2, 16, or 18 routing tables, or even more.
Routes in the topology table will not be inserted into the routing table if they are active, are a feasible successor, or have a higher administrative distance than an equivalent path. [3] Information in the topology table may be inserted into the router's routing table and can then be used to forward traffic. If the network changes (for ...
When a router receives a packet, it searches its routing table to find the best match between the destination IP address of the packet and one of the addresses in the routing table. Once a match is found, the packet is encapsulated in the layer-2 data link frame for the outgoing interface indicated in the table entry.
Cisco VIP 2-40, from an older generation of routers. Performance Route Processor, from the high-end Cisco 12000 series.. In routing, the data plane, sometimes called the forwarding plane or user plane, defines the part of the router architecture that decides what to do with packets arriving on an inbound interface.
The next-hop address could also be on a subnet that is directly connected, and, before the router can determine if the static route is usable, it must do a recursive lookup of the next hop address in the local routing table. If the next-hop address is reachable, the static route is usable, but if the next-hop is unreachable, the route is ignored.
-f: Clears the routing table-p: The route is added to the Windows Registry and is used to initialize the IP routing table whenever the TCP/IP protocol is started (only when used with the add command) Command: The command to run (add, change, delete, print)-4: Force using IPv4-6: Force using IPv6; Destination: Network destination of the route