D-Link DGS-3426 User Manual - Page 94
The Implementation of DHCP Information Option 82
View all D-Link DGS-3426 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 94 highlights
xStack DGS-3400 Series Layer 2 Gigabit Ethernet Managed Switch The Implementation of DHCP Information Option 82 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. 1 1 byte 2. 6 1 byte 3. 0 1 byte 4. 4 1 byte 5. VLAN 2 bytes 6. 7. 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 MAC address 6 bytes 1. Sub-option type 2. Length 3. Remote ID type 4. Length 5. MAC address: The Switch's system MAC address. Figure 6- 47. Circuit ID and Remote ID Sub-option Format 80