Example: Dhcp Relay For Two Vlans - ZyXEL Communications MSC1024G Series User Manual

Table 14 DHCP Relay (continued)
LABEL
Primary/
Secondary Server
IP
Relay Mode
Active Server
Apply
New
Cancel
Index
VID
Mode
Option82 Info
Suboption2
Server IP
Relay
Select
Modify
Delete

5.2.1 Example: DHCP Relay for Two VLANs

The following example displays two VLANs (VIDs10 and 12) for the campus network. Two
DHCP servers are installed to serve each VLAN. The system is set up to forward DHCP
requests from the dormitory rooms (VLAN 10) to the DHCP server with an IP address of
192.168.1.100. Requests from the academic buildings (VLAN 12) are sent to the other DHCP
server with an IP address of 172.168.10.100.
MSC1000G/1024G/1224G Series User's Guide
DESCRIPTION
Enter the IP addresses of the remote DHCP servers to which the switch should
relay DHCP requests.
Select Auto to have the system send DHCP requests to the active DHCP server
first. If the active DHCP server does not respond, the system sends the DHCP
request to the other DHCP server which then becomes the active DHCP server.
Select Both to have the switch send DHCP requests to both the primary and
secondary DHCP servers.
Specify to which DHCP server (Primary or Secondary) the system is to forward
this VLAN's DHCP request first.
Click Apply to save the changes in this screen to the system's volatile memory.
The system loses these changes if it is turned off or loses power, so use the
Config Save on the navigation panel and then the Save button to save your
changes to the non-volatile memory when you are done configuring.
Click New to create a new DHCP relay entry.
Click Cancel to begin configuring this screen afresh.
This is the index number of an entry.
This is the ID number of the VLAN group.
This field displays whether the DHCP relay setting is activated or not.
This field displays the sub-option 1 information to add to the DHCP request
packets.
This field displays whether information (configured in the Sub-option 2 Info field)
will be included in the client DHCP requests for this VLAN or not (V for enabled, -
for disabled).
This is the IP address of the primary/secondary DHCP server.
An asterisk in parentheses (*) indicates which DHCP server is active for each
VLAN.
This field displays the DHCP relay mode.
Select an entry's Select check box and click Delete to remove the entry or click
Modify to edit the entry.
Click Modify to change the settings of the selected entry.
Click Delete to remove the selected entries.
Chapter 5 Access Control List Screens
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