Web Management Guide-R05

Table Of Contents
Chapter 12
| Security Measures
IP Source Guard
– 361
Command Usage
Table entries include a MAC address, IP address, lease time, entry type (Static-IP-
SG-Binding, Dynamic-DHCP-Binding), VLAN identifier, and port identifier.
Static addresses entered in the source guard binding table are automatically
configured with an infinite lease time.
When source guard is enabled, traffic is filtered based upon dynamic entries
learned via DHCP snooping, or static addresses configured in the source guard
binding table.
An entry with same MAC address and a different VLAN ID cannot be added to
the binding table .
Static bindings are processed as follows:
If there is no entry with the same VLAN ID and MAC address, a new entry is
added to the binding table using the type “static IP source guard binding.
If there is an entry with the same VLAN ID and MAC address, and the type of
entry is static IP source guard binding, then the new entry will replace the
old one.
If there is an entry with the same VLAN ID and MAC address, and the type of
the entry is dynamic DHCP snooping binding, then the new entry will
replace the old one and the entry type will be changed to static IP source
guard binding.
Only unicast addresses are accepted for static bindings.
Parameters
These parameters are displayed:
Add
Port
– The port to which a static entry is bound.
VLAN
– ID of a configured VLAN (Range: 1-4094)
MAC Address
– A valid unicast MAC address.
IP Address
– A valid unicast IP address, including classful types A, B or C.
Show
MAC Address
– Physical address associated with the entry.
IP Address
– IP address corresponding to the client.