C
HAPTER
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| Security Measures
DHCP Snooping
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Dynamic Binding List
◆ VLAN – VLAN to which this entry is bound.
◆ MAC Address – Physical address associated with the entry.
◆ Interface – Port to which this entry is bound.
◆ IP Address – IP address corresponding to the client.
◆ Type – DHCP-Snooping.
◆ Lease Time – The time for which this IP address is leased to the client.
WEB INTERFACE
To display the binding table for IP Source Guard:
1. Click Security, IP Source Guard, Dynamic Binding.
2. Mark the search criteria, and enter the required values.
3. Click Query
Figure 200: Showing the IP Source Guard Binding Table
DHCP SNOOPING
The addresses assigned to DHCP clients on insecure ports can be carefully
controlled using the dynamic bindings registered with DHCP Snooping (or
using the static bindings configured with IP Source Guard). DHCP snooping
allows a switch to protect a network from rogue DHCP servers or other
devices which send port-related information to a DHCP server. This
information can be useful in tracking an IP address back to a physical port.
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