Dynamix UM-A User Manual page 55

Not necessary to relay multicast routing between two ADSL PVCs or two interfaces in LAN
side.
Special purpose multicast packet (such as RIP 2 packet) should run without Interference.
Note: Before the IGMP mode is enabled; please go to the Miscellaneous Configuration page
to enable the IGMP proxy. Otherwise, the IGMP selection will not be valid.
Q: Where can I download the free software to test IGMP?
A: Please go to this link
I. MAC Spoofing :
MAC Spoofing: Enable MAC Spoofing to make a different MAC Address appear on the
WAN side. This is also used to solve the scenario where the ISP only recognizes one MAC
Address.
Note : Default is Disabled.
MAC Address: When MAC Spoofing is enabled, copy the ISP-recognized MAC address here.
Format for MAC address is six pairs of hexadecimal numbers (0-9, A-F) separated by colons.
Note : Default is 00:00:00:00:00:00.
J. ATM :
Asynchronous Transfer Mode: A method of transfer in which data is organized into 53-byte cell
units. ATM cells are processed asynchronously in relation to other cells.
Service Category: This field allows you to select from the following service categories, with
UBR as the default.
UBR (Unspecified Bit Rate): When configured as UBR, traffic is delivered with
best efforts but with no guarantee. This allows for fluctuation in times of temporary
increase of available bandwidth. For example, if a PVC with CBR is temporarily
inactive, the PVC(s) with UBR will utilize that bandwidth while it is available.
UBR is intended for applications that do not require any maximum bound on the
transfer delay.
CBR (Constant Bit Rate): When a PVC is specified as a CBR, that PVC is
guaranteed a certain bandwidth, characterized by the Peak Cell Rate (PCR). The
CBR does not have to transmit with a peak cell rate, and when it does, it is only
when the bandwidth specified by the PCR is guaranteed.
VBR-nrt (Variable Bit Rate - non real time): An PVC enabled with VBR-nrt can
transmit a cell only if the PVC has a token available. The PVC accumulates tokens
at the rate of the Sustainable Cell Rate, and the PVC can only accumulate a
maximum of the value specified by Maximum Burst Size tokens. When a PVC
has a token available, it can transmit cells at the rate of PCR. After a cell is
transmitted, the PVC loses the token it has accumulated.
http://manimac.itd.nrl.navy.mil/MGEN/
4/1 Port ADSL Router P 54