Example: Dhcp Relay For Two Vlans - ZyXEL Communications GS2210 Series User Manual

Table 173 IP Application > DHCP > DHCPv4 > VLAN > Port (continued)
LABEL
Option 82
Profile
Add
Cancel
Clear
Index
VID
Port
Profile Name
Delete
Cancel

40.4.8 Example: DHCP Relay for Two VLANs

The following example displays two VLANs (VIDs 1 and 2) for a 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 1) to the DHCP server with an IP address of 192.168.1.100. Requests from
the academic buildings (VLAN 2) are sent to the other DHCP server with an IP address of
172.16.10.100.
Figure 243 DHCP Relay for Two VLANs
VLAN 1
VLAN 2
For the example network, configure the VLAN Setting screen as shown.
Chapter 40 DHCP
DESCRIPTION
Select a pre-defined DHCP option 82 profile that the Switch applies to the specified port(s)
in this VLAN. The Switch adds the Circuit ID sub-option and/or Remote ID sub-option
specified in the profile to DHCP requests that it relays to a DHCP server.
The profile you select here has priority over the one you select in the DHCP > DHCPv4 >
VLAN screen.
Click this to create a new entry or to update an existing one.
This saves your changes to the Switch's run-time memory. The Switch loses these changes
if it is turned off or loses power, so use the Save link on the top navigation panel to save
your changes to the non-volatile memory when you are done configuring.
Click this to reset the values above based on the last selected entry or, if not applicable, to
clear the fields above.
Click Clear to reset the fields to the factory defaults.
This field displays a sequential number for each entry. Click an index number to change the
settings.
This field displays the VLAN to which the port(s) belongs.
This field displays the port(s) to which the Switch applies the settings.
This field displays the DHCP option 82 profile that the Switch applies to the port(s) in this
VLAN.
Select an entry's check box to select a specific entry. Otherwise, select the check box in the
table heading row to select all entries.
Select the entry(ies) that you want to remove, then click the Delete button to remove the
selected entry(ies) from the table.
Click this to clear the check boxes above.
GS2210 Series User's Guide
DHCP: 192.168.1.100
DHCP: 172.16.10.100
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