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-Linux FAQs with Answers--How to show a MAC learning table of Linux bridge
-================================================================================
-> **Question**: I would like to check MAC address learning status of a Linux bridge that I created with brctl tool. How can I view the MAC learning table (or forwarding table) of a Linux bridge? 
-
-A Linux bridge is software implementation of a network bridge, which is part of Linux kernel. Similar to hardware bridge, Linux bridge maintains a layer-2 forwarding table (also known as MAC learning table, forwarding database, or just FDB), which keeps track of what MAC addresses are associated with which ports. When a bridge receives a packet (with source MAC address X) at port N, it records in FDB that MAC address X is reachable from port N. That way, later when a bridge needs to forward a packet destined to address X, it knows where to forward the packet from FDB lookup. Building a FDB is often called "MAC learning" or just "learning" process.
-
-You can check the current forwarding table or MAC learning table of a Linux bridge using the following command.
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-    $ sudo brctl showmacs <bridge-name>
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-![](https://farm4.staticflickr.com/3856/14963353726_8971873948_z.jpg)
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-This command will show a list of all learned MAC addresses along with their associated port number. Each entry has a corresponding aging timer attached to it, so that the forwarding entries get refreshed after some time, making the MAC learning table up-to-date.
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-via: http://ask.xmodulo.com/show-mac-learning-table-linux-bridge.html
-
-译者：[译者ID](https://github.com/译者ID)
-校对：[校对者ID](https://github.com/校对者ID)
-
-本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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+Linux有问必答——如何显示Linux网桥的MAC学习表
+================================================================================
+
+> **问题**：我想要检查一下我用brctl工具创建的Linux网桥的MAC地址学习状态。请问，我要怎样才能查看Linux网桥的MAC学习表（或者转发表）？
+
+Linux网桥是网桥的软件实现，这是Linux内核的内核部分。与硬件网桥相类似，Linux网桥维护了一个2层转发表（也称为MAC学习表，转发数据库，或者仅仅称为FDB），它跟踪记录了MAC地址与端口的对应关系。当一个网桥在端口N收到一个包时（源MAC地址为X），它在FDB中记录为MAC地址X可以从端口N到达。这样的话，以后当网桥需要转发一个包到地址X时，它就可以从FDB查询知道转发到哪里。构建一个FDB常常称之为“MAC学习”或仅仅称为“学习”过程。
+
+你可以使用以下命令来检查Linux网桥当前转发表或MAC学习表。
+
+    $ sudo brctl showmacs <bridge-name>
+
+![](https://farm4.staticflickr.com/3856/14963353726_8971873948_z.jpg)
+
+该命令将显示一个学习到的MAC地址与关联端口的列表。各个条目都有一个相关的附于其上的老化计时器，因此转发条目可以在一定时间后刷新，以使MAC学习表更新到最新。
+
+--------------------------------------------------------------------------------
+
+via: http://ask.xmodulo.com/show-mac-learning-table-linux-bridge.html
+
+译者：[GOLinux](https://github.com/GOLinux)
+校对：[校对者ID](https://github.com/校对者ID)
+
+本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出