D-Link DES-3526DC Product Manual - Page 136
The Implementation of DHCP Information Option 82 in the xStack DES-3500 Series switches
View all D-Link DES-3526DC manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 136 highlights
xStack DES-3500 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual The Implementation of DHCP Information Option 82 in the xStack DES-3500 Series switches The config dhcp_relay option_82 command configures the DHCP relay agent information option 82 setting of the switch. The formats for the circuit ID sub-option and the remote ID sub-option are as follows: NOTE: For the circuit ID sub-option of a standalone switch, the module field is always zero. Circuit ID sub-option format: 1. 2. 3. 4. 1 6 0 1 byte 1 byte 1 byte 1 byte 5. 4 2 bytes 6. 7. VLAN Module Port 1 byte 1 byte a. Sub-option type b. Length c. Circuit ID type d. Length e. VLAN : the incoming VLAN ID of DHCP client packet. f. Module : For a standalone switch, the Module is always 0; For a stackable switch, the Module is the Unit ID. g. Port : The incoming port number of DHCP client packet, port number starts from 1. Remote ID sub-option format: 1. 2. 3. 4. 5. 2 8 0 6 1 byte 1 byte 1 byte 1 byte 6 bytes MAC address 1. Sub-option type 2. Length 3. Remote ID type 4. Length 5. MAC address: The Switch's system MAC address. Figure 6- 108. Circuit ID and Remote ID Sub-option Format 122