Motorola WiNG 5 System Reference Manual page 145

VLAN
Description
Edge VLAN Mode
Trust ARP Response
Trust DHCP Responses
Figure 5-43 Network Bridge VLAN screen
Lists the numerical identifier defined for the Bridge VLAN when it was
initially created. The available range is from 1 - 4095. This value cannot be
modified during the edit process.
Lists a description of the VLAN assigned when it was created or modified.
The description should be unique to the VLAN's specific configuration and
help differentiate it from other VLANs with similar configurations.
Defines whether the VLAN is currently in edge VLAN mode. An edge VLAN
is the VLAN where hosts are connected. For example, if VLAN 10 is defined
with wireless clients and VLAN 20 is where the default gateway resides,
VLAN 10 should be marked as an edge VLAN and VLAN 20 shouldn't be
marked as an edge VLAN. When defining a VLAN as edge VLAN, the firewall
enforces additional checks on hosts in that VLAN. For example, a host cannot
move from an edge VLAN to another VLAN and still keep firewall flows
active.
When ARP trust is enabled, a green checkmark displays. When disabled, a
red "X" displays. Trusted ARP packets are used to update the IP-MAC Table
to prevent IP spoof and arp-cache poisoning attacks.
When DHCP trust is enabled, a green checkmark displays. When disabled, a
red "X" displays. When enabled, DHCP packets from a DHCP server are
considered trusted and permissible within the network. DHCP packets are
used to update the DHCP Snoop Table to prevent IP spoof attacks.
Device Configuration 5 - 85