The 3G Backup Screen - ZyXEL Communications VMG1312-T10C User Manual

Chapter 5 WAN Setup
Table 7 NeMore Connections: Edit: Advanced Setup (continued)
LABEL
Multicast
MLD Proxy
ATM QoS
ATM QoS Type
Peak Cell Rate
Sustain Cell Rate
Maximum Burst Size
PPPoE Passthrough
MTU
MTU
Apply
Cancel

5.4 The 3G Backup Screen

Use this screen to configure your 3G settings. Click Network Setting > Broadband > 3G
Backup.
Note: The actual data rate you obtain varies depending the 3G card you use, the signal
strength to the service provider's base station, and so on.
50
DESCRIPTION
Devices use the IGMP (Internet Group Management Protocol) network-layer
protocol to establish membership in a multicast group. Select IGMP v1/IGMP-v2/
IGMP-v3. Select None to disable it.
Select the version of MLD proxy (v1 or v2) to have the Device act as for this
connection. This allows the Device to get subscription information and maintain a
joined member list for each multicast group. It can reduce multicast traffic
significantly. Select None to turn off MLD proxy.
Select CBR (Continuous Bit Rate) to specify fixed (always-on) bandwidth for voice
or data traffic. Select UBR With PCR (Unspecified Bit Rate with Peak Cell Rate) for
applications that are non-time sensitive, such as e-mail. Select Non Realtime VBR
(Variable Bit Rate-non Real Time) or Realtime VBR (Variable Bit Rate-Real Time)
for bursty traffic and bandwidth sharing with other applications.
Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to find the Peak Cell
Rate (PCR). This sets the maximum rate at which the sender can send cells. Type
the PCR here.
The Sustain Cell Rate (SCR) sets the average cell rate (long-term) that can be
transmitted. Type the SCR, which must be less than the PCR. Note the system
default of 0 cells/sec.
Maximum Burst Size (MBS) refers to the maximum number of cells that can be sent
at the peak rate. Type the MBS (less than 65535).
When using the PPPoE the encapsulation type, select this to enable PPPoE
passthrough. In addition to the Device's built-in PPPoE client, this allows hosts on
the LAN to use PPPoE client software on their computers to connect to the ISP
through the Device. Each host can have a separate account and a public WAN IP
address.
The Maximum Transmission Unit (MTU) defines the size of the largest packet
allowed on an interface or connection. Enter the MTU in this field.
For ENET ENCAP, the MTU value equals 1500.
For PPPoE, the MTU value equals 1492.
For PPPoA and RFC, the MTU equals 100-1500.
Click this to save your changes.
Click this to restore your previously saved settings.
VMG1312-T10C User's Guide