Comtrend Corporation WAP-5813n User Manual page 40

Automatically Add Clients With the Following DHCP Vendor IDs:
Add support to automatically map LAN interfaces to PVC's using DHCP vendor ID
(option 60). The local DHCP server will decline and send the requests to a remote
DHCP server by mapping the appropriate LAN interface. This will be turned on when
Interface Grouping is enabled.
For example, imagine there are 4 PVCs (0/33, 0/36, 0/37, 0/38). VPI/VCI=0/33 is
for PPPoE and the others are for IP set-top box (video). The LAN interfaces are
ENET1, ENET2, ENET3, and ENET4.
The Interface Grouping configuration will be:
1. Default: ENET1, ENET2, ENET3, and ENET4.
2. Video: nas_0_36, nas_0_37, and nas_0_38. The DHCP vendor ID is "Video".
If the onboard DHCP server is running on "Default" and the ISP's DHCP server is
running on PVC 0/36. It is for set-top box use only. On the LAN side, the PC can get
IP address from the CPE's DHCP server and access the Internet via PPPoE (0/33).
If the set-top box is connected with interface "ENET1" and sends a DHCP request
with vendor id "Video", the CPE's DHCP server will forward this request to ISP's
DHCP server. Then the CPE will change the port-mapping configuration
automatically. The port-mapping configuration will become:
1. Default: ENET2, ENET3, and ENET4.
2. Video: nas_0_36, nas_0_37, nas_0_38, and ENET1.
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