SNR S2989G-48TX-DC — настройка функций безопасности и PPPoE в сетевых устройствах [348/553]

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S2989G-24TX Operation Manual

Chapter 6 Security Function Configuration

6-75

Switch(config-if-ethernet1/0/3)#exit

Switch(config)#interface ethernet 1/0/4

Switch(config-if-ethernet1/0/4)# switchport mode trunk

6.9.4

MAB Troubleshooting

If there is any problem happens when using MAB function, please check whether the

problem is caused by the following reasons:

 Make sure global and port MAB function are enabled;

 Make sure the correct username and password of MAB

authentication are used;

 Make sure the radius-server configuration is correct. Complete

MAB offline-detect through query whether dynamic MAC is exist.

Do not delete the binding if the MAC address exists in MAC

address table. The actual offline time without the traffic is 1-2 MAC

aging period add 0-1 MAB offline-detect time.

6.10

PPPoE Intermediate Agent

6.10.1

Introduction to PPPoE Intermediate Agent

6.10.1.1 Brief Introduction to PPPoE

PPPoE (Point to Point Protocol over Ethernet) is a protocol that apply PPP protocol to

Ethernet. PPP protocol is a link layer protocol and supply a communication method of

point-to-point, it is usually selected by host dial-up link, for example the link is line dial-up.

PPP protocol is applied to Ethernet that means PPPoE protocol makes many hosts of

Ethernet to connect a remote access collector through one or multiple bridge devices. If

the remote access collector is broadband access server (BAS), it can supply broadband

access and accounting functions for these hosts, so PPPoE protocol is used to broadband

access authentication of Ethernet usually.

6.10.1.2 Introduction to PPPoE IA

Along with broadband access technique is rapidly developed, broadband access