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- Forwarding_plane abstract "In routing, the forwarding plane, sometimes called the data plane, defines the part of the router architecture that decides what to do with packets arriving on an inbound interface. Most commonly, it refers to a table in which the router looks up the destination address of the incoming packet and retrieves the information necessary to determine the path from the receiving element, through the internal forwarding fabric of the router, and to the proper outgoing interface(s). The IP Multimedia Subsystem architecture uses the term transport plane to describe a function roughly equivalent to the routing control plane.In certain cases the table may specify that a packet is to be discarded. In such cases, the router may return an ICMP "destination unreachable" or other appropriate code. Some security policies, however, dictate that the router should drop the packet silently, in order that a potential attacker does not become aware that a target is being protected.The incoming forwarding element will also decrement the time-to-live (TTL) field of the packet, and, if the new value is zero, discard the packet. While the Internet Protocol (IP) specification indicates that an Internet Control Message Protocol (ICMP) Time exceeded message should be sent to the originator of the packet (i.e. the node indicated by the source address), the router may be configured to drop the packet silently (again according to security policies).Depending on the specific router implementation, the table in which the destination address is looked up could be the routing table (also known as the routing information base, RIB), or a separate forwarding information base (FIB) that is populated (i.e., loaded) by the routing control plane, but used by the forwarding plane for look-ups at much higher speeds. Before or after examining the destination, other tables may be consulted to make decisions to drop the packet based on other characteristics, such as the source address, the IP protocol identifier field, or Transmission Control Protocol (TCP) or User Datagram Protocol (UDP) port number.Forwarding plane functions run in the forwarding element. High-performance routers often have multiple distributed forwarding elements, so that the router increases performance with parallel processing.The outgoing interface will encapsulate the packet in the appropriate data link protocol. Depending on the router software and its configuration, functions, usually implemented at the outgoing interface, may set various packet fields, such as the DSCP field used by differentiated services.In general, the passage from the input interface directly to an output interface, through the fabric with minimum modification at the output interface, is called the fast path of the router. If the packet needs significant processing, such as segmentation or encryption, it may go onto a slower path, which is sometimes called the services plane of the router. Service planes can make forwarding or processing decisions based on higher-layer information, such as a Web URL contained in the packet payload.".
- Forwarding_plane thumbnail Cisco-VIP-2-40-hdr-0a.jpg?width=300.
- Forwarding_plane wikiPageID "11996218".
- Forwarding_plane wikiPageLength "13678".
- Forwarding_plane wikiPageOutDegree "36".
- Forwarding_plane wikiPageRevisionID "676093155".
- Forwarding_plane wikiPageWikiLink Application-specific_integrated_circuit.
- Forwarding_plane wikiPageWikiLink Binary_tree.
- Forwarding_plane wikiPageWikiLink Category:Internet_architecture.
- Forwarding_plane wikiPageWikiLink Category:Routers_(computing).
- Forwarding_plane wikiPageWikiLink Classless_Inter-Domain_Routing.
- Forwarding_plane wikiPageWikiLink Clos_network.
- Forwarding_plane wikiPageWikiLink Clos_networks.
- Forwarding_plane wikiPageWikiLink Content-addressable_memory.
- Forwarding_plane wikiPageWikiLink Content_addressable_memory.
- Forwarding_plane wikiPageWikiLink Crossbar_switch.
- Forwarding_plane wikiPageWikiLink Differentiated_services.
- Forwarding_plane wikiPageWikiLink Dynamic_random-access_memory.
- Forwarding_plane wikiPageWikiLink Dynamic_random_access_memory.
- Forwarding_plane wikiPageWikiLink Forwarding_information_base.
- Forwarding_plane wikiPageWikiLink Hash_table.
- Forwarding_plane wikiPageWikiLink Hash_tables.
- Forwarding_plane wikiPageWikiLink IP_Multimedia_Subsystem.
- Forwarding_plane wikiPageWikiLink Internet_Control_Message_Protocol.
- Forwarding_plane wikiPageWikiLink Internet_Engineering_Task_Force.
- Forwarding_plane wikiPageWikiLink Internet_Protocol.
- Forwarding_plane wikiPageWikiLink Linked_list.
- Forwarding_plane wikiPageWikiLink MAC_address.
- Forwarding_plane wikiPageWikiLink Multi-core_(computing).
- Forwarding_plane wikiPageWikiLink Multi-core_processor.
- Forwarding_plane wikiPageWikiLink Network_Search_Engine.
- Forwarding_plane wikiPageWikiLink Network_processor.
- Forwarding_plane wikiPageWikiLink Network_search_engine.
- Forwarding_plane wikiPageWikiLink Patricia_tree.
- Forwarding_plane wikiPageWikiLink Radix_tree.
- Forwarding_plane wikiPageWikiLink Router_(computing).
- Forwarding_plane wikiPageWikiLink Routing.
- Forwarding_plane wikiPageWikiLink Routing_control_plane.
- Forwarding_plane wikiPageWikiLink Routing_table.
- Forwarding_plane wikiPageWikiLink Search_algorithm.
- Forwarding_plane wikiPageWikiLink Static_random-access_memory.
- Forwarding_plane wikiPageWikiLink Static_random_access_memory.
- Forwarding_plane wikiPageWikiLink Transmission_Control_Protocol.
- Forwarding_plane wikiPageWikiLink User_Datagram_Protocol.
- Forwarding_plane wikiPageWikiLink File:Cisco-Gigabit-Switch-Router-Performance-Route-Processor-0a.jpg.
- Forwarding_plane wikiPageWikiLink File:Cisco-VIP-2-40-hdr-0a.jpg.
- Forwarding_plane wikiPageWikiLinkText "Forwarding plane".
- Forwarding_plane wikiPageWikiLinkText "data plane".
- Forwarding_plane wikiPageWikiLinkText "forwarding performance".
- Forwarding_plane wikiPageWikiLinkText "forwarding plane".
- Forwarding_plane wikiPageWikiLinkText "route processor".
- Forwarding_plane hasPhotoCollection Forwarding_plane.
- Forwarding_plane wikiPageUsesTemplate Template:Reflist.
- Forwarding_plane subject Category:Internet_architecture.
- Forwarding_plane subject Category:Routers_(computing).
- Forwarding_plane comment "In routing, the forwarding plane, sometimes called the data plane, defines the part of the router architecture that decides what to do with packets arriving on an inbound interface. Most commonly, it refers to a table in which the router looks up the destination address of the incoming packet and retrieves the information necessary to determine the path from the receiving element, through the internal forwarding fabric of the router, and to the proper outgoing interface(s).".
- Forwarding_plane label "Forwarding plane".
- Forwarding_plane sameAs m.02vlbtv.
- Forwarding_plane sameAs Q5473302.
- Forwarding_plane sameAs Q5473302.
- Forwarding_plane wasDerivedFrom Forwarding_plane?oldid=676093155.
- Forwarding_plane depiction Cisco-VIP-2-40-hdr-0a.jpg.
- Forwarding_plane isPrimaryTopicOf Forwarding_plane.