ZXR10 2920/2928/2952
(V1.0) Access Switch User Manual （Volume I）
194 Confidential and Proprietary Information of ZTE CORPORATION
zte(cfg)#set gvrp trunk 2 enable
zte(cfg)#set gvrp trunk 2 disable
zte(cfg)#set gvrp trunk 2 registration fixed
zte(cfg)#set gvrp trunk 2 registration forbidden
zte(cfg)#set gvrp trunk 2 registration normal
In this example, show GVRP configuration status.
zte(cfg)#show gvrp
GVRP is enabled!
PortId Status Registration LastPduOrigin
------ -------- ------------ -----------------
2 Enabled Fixed 00. 00. 00. 00.
00. 00
T2 Enabled Normal 00. 00. 00. 00.
00. 00
DHCP Snooping/Option82
DHCP (Dynamic Host Configuration Protocol) is a protocol that
the network host sends request to server to get host
configuration in dynamic mode.
As having no IP address, DHCP servers interact in broadcasting
way, and course is transparent. There is no authentication
between DHCP server and client. There may be DHCP servers
that establish a private and illegal way, which causes confusion
to part of the hosts of their address distribution, gateway and
DNS parameters, and make it impossible for the hosts to
connect to the external network.
There will be IP deceiving, MAC address deceiving and user ID
deceiving from illegal client, and exhaustion of DHCP server
address. DHCP Snooping and Option82 are designed to solve
these safety problems. DHCP Snooping, namely DHCP packet
filtering, is to detect legality of DHCP packets based on some
special rules and filter illegal packets. Use Option82 technique
to provide more additional information, and then strengthen the
network safety ability.
Typical applications of DHCP Snooping and Option82 are shown
in
Figure 34.
DHCP Server
and Client
Strengthening
of Network
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