The hierarchy of FidoNet BBS nodes, hubs, and zones was maintained in a routing table called a Nodelist.

Each node maintains a data store containing documents associated with keys, and a routing table associating nodes with records of their performance in retrieving different keys.

For routing, the entries in the IPX routing table are similar to IP routing tables ; routing is done by network address, and for each network address a network: node of the next router is specified in a similar fashion an IP address / netmask is specified in IP routing tables.

Multiprotocol Label Switching ( MPLS ) is a mechanism in high-performance telecommunications networks that directs data from one network node to the next based on short path labels rather than long network addresses, avoiding complex lookups in a routing table.

As mentioned above, when MPLS was conceived, label lookup and label switching were faster than a routing table or RIB ( Routing Information Base ) lookup because they could take place directly within the switched fabric and not the CPU.

The forwarding of the packet is done based on the contents of the labels, which allows " protocol-independent packet forwarding " that does not need to look at a protocol-dependent routing table and avoids the expensive IP longest prefix match at each hop.

Then, using information in its routing table or routing policy, it directs the packet to the next network on its journey.

* Control plane: A router records a routing table listing what route should be used to forward a data packet, and through which physical interface connection.

It uses data recorded in the routing table control plane.

When each 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 network addresses in the routing table.

Besides making decision as which interface a packet is forwarded to, which is handled primarily via the routing table, a router also has to manage congestion, when packets arrive at a rate higher than the router can process.

Yet another function a router performs is called policy-based routing where special rules are constructed to override the rules derived from the routing table when a packet forwarding decision is made.

Because structured addresses allow a single routing table entry to represent the route to a group of devices, structured addressing ( routing, in the narrow sense ) outperforms unstructured addressing ( bridging ) in large networks, and has become the dominant form of addressing on the Internet, though bridging is still widely used within localized environments.

( This information, the list of destinations, the total cost to each, and the next hop to send data to get there, makes up the routing table, or distance table.

It carries all the routing information needed to get a payment from one bank to another wherever it may be ; it contains all the key bank account details such as Bank Identifier Codes, branch codes ( known as sort codes in the UK and Ireland ) and account numbers and it contains check digits which can be validated at source according to a single standard procedure.

A route is defined as a pairing between a destination and the attributes of the path to that destination, thus the name, path vector routing, where the routers receive a vector that contains paths to a set of destinations.

The header contains all the information sufficient for routing from the originating equipment to the destination without relying on prior exchanges between the equipment and the network.

Packet-switching node: In a packet-switching network, a node that contains data switches and equipment for controlling, formatting, transmitting, routing, and receiving data packets.

The routing table contains network / next hop associations.

* Topology Table: Confusingly named, this table does not store an overview of the complete network topology ; rather, it effectively contains only the aggregation of the routing tables gathered from all directly connected neighbors.

This section discusses the main architectures for PPVPNs, one where the PE disambiguates duplicate addresses in a single routing instance, and the other, virtual router, in which the PE contains a virtual router instance per VPN.

Routing is done by consulting a routing table maintained by the router which contains each known destination network address, the associated network mask, and the information needed to route packets to that destination.

) Besides decimal digits it also contains the following symbols: ⑆ ( transit: used to delimit a bank branch routing transit number ), ⑇ ( amount: used to delimit a transaction amount ), ⑈ ( on-us: used to delimit a customer account number ), and ⑉ ( dash: used to delimit parts of numbers, e. g., routing numbers or account numbers ).

However, if the datagram contains routing information, this message will not be sent even if a better route is available.

NeuStar provides a national database called the NPAC ( National Portability Administration Center ) which contains the correct routing information for all ported and pooled numbers in the US and Canada.

The IPv6 stack also contains the RPL routing protocol for low-power lossy IPv6 networks and the 6lowpan header compression and adaptation layer for IEEE 802. 15. 4 links.

* a distinct PSI contains the PSI that is used in routing

: This category contains algorithms for routing.

The fully routed physical netlist contains the listing of gates from synthesis, the placement of each gate from placement, and the drawn interconnects from routing.

The instrument contains a sophisticated matrix for the handling and routing of control voltages.

It contains attributes to enable the routing of vehicles, taking into account the limitations of the road network.

Each entry in the routing table contains the destination network, the next router and the path to reach the destination.

This is possible because the Girocard contains the bank account number and routing code of the giro account in the magnetic stripe.

Internetworking ( a combination of the words inter (" between ") and networking ; it is not internet-working or international-network ) is the practice of connecting a computer network with other networks through the use of gateways that provide a common method of routing information packets between the networks.

It includes the domestic bank account number, branch identifier, and potential routing information.

This often led to necessary routing information being missing from payments.

Furthermore, routing information as specified by ISO 9362 does not contain check digits, so simple errors of transcription were not detectable and it was not possible for a sending bank to validate the routing information prior to submitting the payment.

The egress router must therefore have routing information for the packet's payload, since it must forward it without the help of label lookup tables.

When multiple routers are used in interconnected networks, the routers exchange information about destination addresses, using a dynamic routing protocol.

Routers intended for ISP and major enterprise connectivity usually exchange routing information using the Border Gateway Protocol ( BGP ).

Adaptive routing, or dynamic routing, attempts to solve this problem by constructing routing tables automatically, based on information carried by routing protocols, and allowing the network to act nearly autonomously in avoiding network failures and blockages.

The neighbouring node ( s ) examine this information, and compare it to what they already ' know '; anything which represents an improvement on what they already have, they insert in their own routing table ( s ).

The path, expressed in terms of the domains ( or confederations ) traversed so far, is carried in a special path attribute that records the sequence of routing domains through which the reachability information has passed.

In the case of computer networking, the metric is computed by a routing algorithm, and can cover such information as bandwidth, network delay, hop count, path cost, load, MTU, reliability, and communication cost ( see e. g. this survey for a list of proposed routing metrics ).

The routing table stores only the best possible routes, while link-state or topological databases may store all other information as well.

Wiretaps were expanded to include addressing and routing information to allow surveillance of packet switched networks

The additional information tells the BGP process such things as whether individual entries belong in the Adj-RIBs for specific neighbors, whether the per-neighbor route selection process made received policies eligible for the Loc-RIB, and whether Loc-RIB entries are eligible to be submitted to the local router's routing table management process.