ZyXEL VES1724-56B2 User Guide - Page 314
Configuring DHCP Global Relay
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Chapter 35 DHCP The 1 in the first field identifies this as an Agent Circuit ID sub-option and 2 identifies this as an Agent Remote ID sub-option. The next field specifies the length of the field. The following describes the default DHCP relay information that the Switch sends to the DHCP server when you enable DHCP Option 82: Table 147 DHCP Relay Agent Information FIELD LABELS DESCRIPTION Slot ID (1 byte) This value is always 0 for stand-alone switches. Port ID (1 byte) This is the port that the DHCP client is connected to. VLAN ID (2 bytes) This is the VLAN that the port belongs to. Information (Circuit ID) (up to 15 bytes) This is the information you want the Switch to add in the DHCP requests that it relays to a DHCP server. You can configure the Switch to also append the remote ID to the option 82 field of DHCP requests. 35.4.4 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. Note: The port to which the DHCP server connects and the port(s) from which the DHCP requests come should be in the same VLAN. You can additionally configure whether to add/replace DHCP relay option 82 tags on a per-port basis in the Basic Setting > Port Setup screen (see Section 8.9 on page 82). 314 VES1724-56 User's Guide
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