D-Link DGS-3630-28SC Manual - Page 775
IP Source Guard Commands
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DGS-3630 Layer 3 Stackable Managed Switch CLI Reference Guide 56. IP Source Guard Commands 56-1 ip verify source vlan dhcp-snooping This command is used to enable IP source guard for a port. Use the no form of this command to disable IP source guard. ip verify source vlan dhcp-snooping [ip-mac] no ip verify source vlan dhcp-snooping [ip-mac] Parameters ip-mac (Optional) Specifies to check both IP address and MAC address of the received IP packets. Default By default, this option is disabled. Command Mode Interface Configuration Mode. Command Default Level Level: 12. Usage Guideline The command is available for physical port and port channel configuration. Use this command to enable the IP source guard on the configured port. When a port is enabled for IP source guard, the IP packet that arrives at the port will be validated via the port ACL. Port ACL is a hardware mechanism and its entry can come from either a manual configured entry or the DHCP snooping binding database. The packet that fails to pass the validation will be dropped. There are two types of validations. • If ip-mac is not specified, the validation is based on the source IP address and VLAN check only. • If ip-mac is specified, the validation is based on the source MAC address, VLAN and IP address. Example This example shows how to enable IP Source Guard for ethernet 1/0/1. Switch# configure terminal Switch(config)# interface ethernet 1/0/1 Switch(config-if)# ip verify source vlan dhcp-snooping Switch(config-if)# 56-2 ip source binding This command is used to create a static entry used for IP source guard. Use the no form of this command to delete a static binding entry. ip source binding MAC-ADDRESS vlan VLAN-ID IP-ADDRESS interface INTERFACE-ID [, | -] no ip source binding MAC-ADDRESS vlan VLAN-ID IP-ADDRESS interface INTERFACE-ID [, | -] 770
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