NETGEAR XS728T ProSAFE - Services-DHCP Snooping

System
40
XS728T ProSAFE 28-Port 10-Gigabit L2+ Smart Switch
Services—DHCP Snooping
DHCP snooping is a useful feature that provides security by filtering untrusted DHCP
messages and by building and maintaining a DHCP snooping binding table. An untrusted
message is a message that is received from outside the network or firewall and that can
cause traffic attacks within your network. The DHCP snooping binding table contains the
MAC address, IP address, lease time, binding type, VLAN number, and interface information
that corresponds to each of the local untrusted interfaces of a switch.
DHCP snooping acts like a firewall between untrusted hosts and DHCP servers. It also
provides way to differentiate between untrusted interfaces connected to the end user and
trusted interfaces connected to the DHCP server or another switch.
From the Services menu, you can access features described in the following sections:
• DHCP Snooping Global Configuration
• DHCP Snooping Interface Configuration
Asset ID The asset ID advertised by the remote device.
Location Information
Civic The physical location, such as the street address, the remote device has
advertised in the location TLV, for example, 123 45th St. E. The field value
length range is 6–160 characters.
Coordinates The location map coordinates the remote device has advertised in the
location TLV, including latitude, longitude, and altitude.
ECS ELIN The Emergency Call Service (ECS) Emergency Location Identification
Number (ELIN) the remote device has advertised in the location TLV. The
field range is 10–25.
Unknown Specifies unknown location information for the remote device.
Network Policies
Application Type The media application type associated with the policy advertised by the
remote device.
VLAN ID The VLAN ID associated with the policy.
VLAN Type Specifies whether the VLAN associated with the policy is tagged or untagged.
User Priority The priority associated with the policy.
DSCP The DSCP associated with a particular policy type.
LLDP Unknown TLVs
Type The unknown TLV type field.
Value The unknown TLV value field.
Field Description