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Chapter 51 DHCP
XMG1915 Series User’s Guide
300
Figure 213 NETWORKING > DHCP > DHCPv4 Relay > DHCP Relay VLAN Setting > Add/Edit (Port)
The following table describes the labels in this screen.
51.6.3 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.
Table 169 NETWORKING > DHCP > DHCPv4 Relay > DHCP Relay VLAN Setting > Add/Edit (Port)
LABEL DESCRIPTION
VID Enter the ID number of the VLAN you want to configure here.
Port Enter the number of ports to which you want to apply the specified DHCP option 82 profile.
You can enter multiple ports separated by (no space) comma (,) or hyphen (-). For example,
enter “3-5” for ports 3, 4, and 5. Enter “3,5,7” for ports 3, 5, and 7.
Option 82 Profile Select a pre-defined DHCP option 82 profile that the Switch applies to the specified ports 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 NETWORKING > DHCP >
DHCPv4 Relay > DHCP Relay VLAN Setting (the DHCP Relay VLAN Setting section)> Add/Edit
screen.
Apply Click Apply to save 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.
Clear Click Clear to clear the fields to the factory defaults.
Cancel Click Cancel to not save the configuration you make and return to the last screen.
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