Zyxel VES-1624FT-55A [176/312] Chapter 29 dhcp relay

Zyxel VES-1624FT-55A [176/312] Chapter 29 dhcp relay
Chapter 29 DHCP Relay
VES-1624FT-55A User’s Guide
176
Apply Click Apply to save your changes to the IP DSLAM’s volatile memory. The IP
DSLAM loses these changes if it is turned off or loses power, so use the Config
Save link on the navigation panel to save your changes to the non-volatile
memory when you are done configuring.
Cancel Click Cancel to begin configuring this screen afresh.
Server List This section lists the current DHCP relay settings for each VLAN. An asterisk in
parentheses (*) indicates which DHCP server is active for each VLAN.
VID This field displays the ID of the VLAN served by the specified DHCP relay(s).
Active This field displays whether or not the IP DSLAM relays DHCP requests in the
selected VLAN to a DHCP server and the server’s responses back to the
clients.
Primary Server IP This field displays the IP address of one DHCP server to which the switch
should relay DHCP requests. If this is the active server for the selected VLAN, it
is marked with an asterisk (*).
Secondary Server
IP
This field displays the IP address of a second DHCP server to which the switch
should relay DHCP requests. This field is 0.0.0.0 if the primary server is the only
DHCP relay. If this is the active server for the selected VLAN, it is marked with
an asterisk (*).
Relay Mode This field displays how the IP DSLAM relays DHCP requests for the selected
VLAN.
Auto - The IP DSLAM routes DHCP requests to the active server for the VLAN.
Both - The IP DSLAM routes DHCP requests to the primary and secondary
server for the VLAN, regardless of which one is active.
Option Mode This field displays which format (Private or TR101) the IP DSLAM uses to add
DHCP relay agent information to DHCP requests.
Option82 Sub-
option1
This field displays whether or not the IP DSLAM adds the originating port
numbers (and any additional information) to DHCP requests in the selected
VLAN.
Option82 Sub-
option2
This field displays whether or not the IP DSLAM adds the sub-option 2 (and any
additional information) to DHCP requests in the selected VLAN.
Delete Select the check box next to the VLAN ID, and click Delete to remove the entry.
Select All Click this to select all entries in the Server List.
Select None Click this to un-select all entries in the Server List.
Table 57 DHCP Relay (continued)
LABEL DESCRIPTION

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