Chapter 25 DHCP

Table 68 Relay Agent Information

FIELD LABELS

DESCRIPTION

VLAN ID

(2 bytes) This is the VLAN that the port belongs to.

 

 

Information

(up to 32 bytes) This optional, read-only field is set according

 

to system name set in Basic Settings > General Setup.

 

 

25.3.2 Configuring DHCP Global Relay

Configure global DHCP relay in the DHCP Relay screen. Click IP Application > DHCP in the navigation panel and click the Global link to display the screen as shown.

Figure 100 IP Application > DHCP > Global

The following table describes the labels in this screen.

Table 69 IP Application > DHCP > Global

LABEL

DESCRIPTION

Active

Select this check box to enable DHCP relay.

 

 

Remote

Enter the IP address of a DHCP server in dotted decimal notation.

DHCP Server

 

1 .. 3

 

 

 

Relay Agent

Select the Option 82 check box to have the Switch add information (slot number, port

Information

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.

 

 

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.

 

 

Cancel

Click Cancel to begin configuring this screen afresh.

 

 

25.3.3 Global DHCP Relay Configuration Example

The follow figure shows a network example where the Switch is used to relay DHCP requests for the VLAN1 and VLAN2 domains. There is only one DHCP server that services the DHCP clients in both domains.

 

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ES-2024 Series User’s Guide