Chapter 32 DHCP
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See Section 8.6 on page 72 for information on how to set up management IP addresses for VLANs.
Figure 161 IP Application > DHCP > VLAN
The following table describes the labels in this screen.
32.4.1 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
Table 100 IP Application > DHCP > VLAN
LABEL DESCRIPTION
VID Enter the ID number of the VLAN to which these DHCP settings apply.
Remote DHCP
Server 1 .. 3
Enter the IP address of a DHCP server in dotted decimal notation.
Relay Agent
Information
Select the Option 82 check box to have the Switch add information (slot number, port
number and VLAN ID) to client DHCP requests that it relays to a DHCP server.
Information This read-only field displays the system name you configure in the General Setup screen.
Select the check box for the Switch to add the system name to the client DHCP requests
that it relays to a DHCP server.
Add Click Add 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.
Cancel Click Cancel to begin configuring this screen afresh.
Clear Click this to clear the fields above.
VID This field displays the ID number of the VLAN group to which this DHCP settings apply.
Type This field displays the DHCP mode (Relay).
DHCP Status For DHCP relay configuration, this field displays the first remote DHCP server IP address.
Delete Select the configuration entries you want to remove and click Delete to remove them.
Cancel Click Cancel to clear the Delete check boxes.
