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A network bridge is a computer networking device that creates a single, aggregate network from multiple communication networks or network segments. This function is called network bridging . [ 1 ] Bridging is distinct from routing .
A bridge router or brouter [1] is a network device that works as a bridge and as a router. The brouter routes packets for known protocols and simply forwards all other packets as a bridge would. [2] Brouters operate at both the network layer for routable protocols and at the data link layer for non-routable protocols. As networks continue to ...
Source route bridging is used on Token Ring networks, and is standardized in Section 9 of the IEEE 802.2 standard. The operation of the bridge is simpler (spanning tree protocol is not necessary) and much of the bridging functions are performed by the end systems, particularly the sources, giving rise to its name.
A network switch is a multiport network bridge that uses MAC addresses to forward data at the data link layer (layer 2) of the OSI model. Some switches can also forward data at the network layer (layer 3) by additionally incorporating routing functionality.
A physical topology that contains switching or bridge loops is attractive for redundancy reasons, yet a switched network must not have loops. The solution is to allow physical loops, but create a loop-free logical topology using link aggregation, shortest path bridging, spanning tree protocol or TRILL on the network switches.
IEEE 802.1ah is an amendment to the IEEE 802.1Q networking standard which adds support for Provider Backbone Bridges.It includes an architecture and a set of protocols for routing over a provider's network, allowing interconnection of multiple provider bridge networks without losing each customer's individually defined VLANs.
He added: "I think it's in the industry's interest to enable those new sources of capital, to bridge the gap in understanding, to bridge the gap in analytics, to bridge the gap in frequency of ...
802.1ad specifies architecture and bridge protocols to provide separate instances of the medium access control (MAC) services to multiple independent users of a bridged local area network in a manner that does not require cooperation among the users and requires a minimum amount of cooperation between the users and the provider of the MAC service.