mac

Commands for DHCP Snooping
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usage is described in the chapter of dot1x configuration.
Two HELPER SERVER addresses are allowed, DHCP SNOOPING will try to connect to
PRIMARY SERVER in the first place. Only when the PRIMARY SERVER is unreachable,
will the switch c HELPER SERVER connects to SECONDARY SERVER.
Please pay attention: source address is the effective management IP address of the
switch, if the management IP address of the switch changes, this configuration should be
updated in time.
Example: Set the local management IP address as 100.1.1.1, primary HELPER
SERVER address as 100.1.1.100 and the port as default value.
switch(config)#interface vlan 1
switch(Config- If-Vlan1)#ip address 100.1.1.1 255.255.255.0
switch(Config-if-Vlan1)exit
switch(config)#ip user helper-address 100.1.1.100 source 100.1.1.1
31.29 ip user private packet version two
Command: ip user private packet version two
no ip user private packet version two
Function: The switch choose private packet version two to communicate with trustview.
Parameter: None.
Command Mode: Global Mode.
Default: The switch choose private packet version one to communicate with DCBI.
Usage Guide: If the DCBI access control system is applied, the switch should be
configured to use private protocol of version one to communicate with the DCBI server.
However, if TrustView is applied, version two should be applied.
Example: To configure the switch choose private packet version two to communicate
with inter security management background system.
switch(config)#ip user private packet version two
31.30 show ip dhcp snooping
Command: show ip dhcp snooping [interface [ethernet] <interfaceName>]
Function: Display the current cofiguration information of dhcp snooping or display the
records of defense actions of a specific port.
Parameters: <interfaceName>: The name of the specific port.
Command Mode: Admin and Global Configuration Mode.
Default Settings: None.