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System Configuration
17
Figure 4-10: DHCP client enable
Step 3
Click on “NAT” tab on left panel, and enable the NAPT function in the option menu.
Step 4
Click “Save settings” on left panel to write configuration into machine, and reboot
to make settings effective.
Other settings
Here are explanations about some fields not mentioned above.
MAC Spoofing
The MAC Spoofing is developed to solve the scenario when the ISP only recog-
nizes one MAC address. Copy the ISP-recognized MAC address here.
Figure 4-11: MAC Spoofing
ATM
If your ISP provides this information to you, fill it in appropriate field.
Service Category
UBR and CBR are two different types of service supported from the ATM.
Bandwidth
Bandwidth setting takes effect only when the CBR is selected. The maximum
available bandwidth is from the upstream data rate of ADSL status page.
Figure 4-12: ATM Bandwidth Category
IGMP
Support IGMP proxy/relay function for ADSL modem, based on the following
requirement and case:
On CO side, there must be at least one IGMP querier (router) present. IGMP •
querier will send IGMP query packet. The ADSL modem is responsible to relay
these IGMP query to Ethernet.
End• -user multicast application device send IGMP report while receiving IGMP
query or being activated by user, the ADSL modem should be responsible to
proxy (that is, change source IP to ADSL modem’s WAN IP) the IGMP report to
ADSL WAN side, include all PVCs. The same case is for IGMP leave packet.
It is not necessary to relay • multicast routing between two ADSL PVCs or two
interfaces in LAN side.