The Wan Backup Setup Screen - ZyXEL Communications P-660HN User Manual

Chapter 5 WAN Setup
Table 21 Network > WAN > More Connections: Edit: Advanced Setup (continued)
LABEL
ATM QoS Type
Peak Cell Rate
Sustain Cell Rate
Maximum Burst Size
MTU
MTU
Packet Filter
Incoming Filter Sets
Protocol Filter
Generic Filter
Outgoing Filter Sets
Protocol Filter
Generic Filter
Back
Apply
Cancel

5.4 The WAN Backup Setup Screen

Use this screen to configure your ZyXEL Device's WAN backup. Click Network > WAN >
WAN Backup Setup.
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DESCRIPTION
Select CBR (Continuous Bit Rate) to specify fixed (always-on) bandwidth
for voice or data traffic. Select UBR (Unspecified Bit Rate) for applications
that are non-time sensitive, such as e-mail. Select VBR-nRT (Variable Bit
Rate-non Real Time) or VBR-RT (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 is 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 that
system default is 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, which is less than 65535.
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 is 1500.
For PPPoE, the MTU value is 1492.
For PPPoA and RFC, the MTU is 65535.
Select the protocol filter(s) to control incoming traffic. You may choose up to
4 sets of filters.
You can configure packet filters in the Packet Filter screen. See
on page 177 for more details.
Select the generic filter(s) to control incoming traffic. You may choose up to
4 sets of filters.
You can configure generic filters in the Packet Filter screen. See
11 on page 177 for more details.
Select the protocol filter(s) to control outgoing traffic. You may choose up to
4 sets of filters.
You can configure protocol filters in the Packet Filter screen. See
11 on page 177 for more details.
Select the generic filter(s) to control outgoing traffic. You may choose up to
4 sets of filters.
You can configure generic filters in the Packet Filter screen. See
11 on page 177 for more details.
Click this to return to the previous screen without saving.
Click this to save your changes.
Click this to restore your previously saved settings.
Chapter 11
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P-660HN-Fx User's Guide