透明网桥和源路由网桥的区别

网桥是连接两个或多个 LAN 以创建连续 LAN 的设备。网桥工作在 OSI 参考模型的数据链路层。

透明桥：
透明网桥自动维护路由表和更新表以响应维护不断变化的拓扑。透明桥接机制由三个机制组成：

1. Frame forwarding
2. Address Learning
3. Loop Resolution 

透明网桥易于使用，安装网桥并且不需要在主机中更改软件。在所有情况下，透明网桥都会泛洪广播和组播帧。

源路由桥：
源路由网桥决定两台主机之间的路由。源路由网桥使用帧的 MAC 目标地址通过源路由算法来引导它。在源路由中，扩展 LAN 上的每个站点都知道要发送帧的路由。路由信息存储在帧中。

透明网桥和源路由网桥的区别如下：

S.No.	Transparent Bridge	Source Routing Bridge
1.	Transparent bridge service is connectionless.	Source Routing Bridge service is connection oriented.
2.	In transparent bridge mechanism bridges automatically develop a routing table.	In source routing bridge, bridges do not maintain any routing information.
3.	Transparent bridge does not support multipath routing.	Source routing bridge can make use of multiple path to same destination.
4.	The path used by transparent bridge between any two hosts may not be the optimal path.	Source route bridge always uses the optimal path.
5.	Failures are handled by the transparent bridge on its own.	Host handle the failure of bridge on its own.
6.	Transparent bridges are fully transparent to the users.	Source routing bridges are not visible to the hosts.
7.	The frame processing delay is more.	The frame processing delay is less.
8.	Load sharing is not possible through blocked routes.	Load sharing is possible by judicious choice of routes.