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Occasional Contributor I

acl 命令

show run 看见一个acl 看不懂,请高手,帮忙解释一下,谢谢。

如下:

 ip access-list session lync
  any any svc-sips  permit classify-media queue high

 

 

Aruba Employee

Re: acl 命令

这条命令主要功能是打开语音包的深度检查,已查看相应的端口号。相关的英文原版说明如下:

Voice and video devices use a signaling protocol to establish, control, and terminate voice and video calls. These control or signaling sessions are usually permitted using pre-defined ACLs. If, however, the control signaling packets are encrypted, the controller cannot determine which dynamic ports are used for voice or video traffic. In these cases, the controller has to use an ACL with the classify-media option enabled to identify the voice or video flow based on a deep packet inspection and analysis of the actual traffic.

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