Cabletron Systems 3T02-04 Manual Do Utilizador

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Source Routing Transparent Bridging
Token Ring Switch Module User Guide
Page B-5
B.4 SOURCE ROUTING TRANSPARENT BRIDGING
Source Routing Transparent (SRT) bridging is a method that merges 
IBM-style source routing with transparent spanning tree bridging. If a 
route is present in a packet, then the bridge uses it; otherwise the bridge 
applies transparent learning rules. It represents an attempt by the IEEE 
standards committee to standardize source routing and correct some 
shortcomings in source routing (notably multicast transmission). IEEE 
has defined SRT bridging for Token Rings, and ANSI has incorporated it 
into the FDDI standards. The ATX supports SRT bridging on these, as 
well as on Ethernet (for Ethernet, there is no such standard; the ATX 
provides this as a proprietary backbone service).