Qtech QSW-8200-52T-AC [42/47] Chapter 4 command for arp guard

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User Manual

Chapter 4. Command for ARP GUARD 42

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Chapter 4 COMMAND FOR ARP GUARD

4.1 arp-guard ip

 Command: arp-guard ip <addr>

 no arp-guard ip <addr>

 Function: Add an ARP GUARD address, the no command deletes ARP GUARD address.

 Parameters: <addr> is the protected IP address, in dotted decimal notation.

 Default: There is no ARP GUARD address by default.

 Command Mode: Port configuration mode

 Usage Guide: After configuring the ARP GUARD address, the ARP messages received

from the ports configured ARP GUARD will be filtered. If the source IP addresses of the

ARP messagse match the ARP GUARD address configured on this port, these messages

will be judged as ARP cheating messages, which will be directly dropped instead of

sending to the CPU of the switch or forwarding. 16 ARP GUARD addresses can be

configured on each port.

 Example:

 Configure the ARP GUARD address on port ethernet1/0/1 as 100.1.1.1.

 switch(config)#interface ethernet1/0/1

 switch(Config-If-Ethernet 1/0/1)#arp-guard ip 100.1.1.1

 Delete the ARP GUARD address on port ethernet1/0/1 as 100.1.1.1.

 switch(config)#interface ethernet1/0/1

 switch(Config-If-Ethernet 1/0/1)#no arp-guard ip 100.1.1.1