The Internet Connection Screen - ZyXEL Communications P870HNU-51B User Manual

Chapter 5 WAN Setup
Table 16 DSL PTM Interface Configuration (continued)
LABEL
Service Category
Peak Cell Rate
Sustainable Cell
Rate
Maximum Burst
Size
Select Connection
Mode
Enable Quality Of
Service
Back
Apply/Save

5.5 The Internet Connection Screen

Use this screen to change your Device's WAN settings. Click Network > WAN > Internet
Connection. The summary table shows you the configured WAN services (connections) on the
Device.
To use NAT, firewall or IGMP proxy in the Device, you need to configure a WAN connection with
PPPoE or IPoE.
90
DESCRIPTION
Select UBR Without PCR or UBR With PCR for applications that are non-time
sensitive, such as e-mail.
Select CBR (Continuous Bit Rate) to specify fixed (always-on) bandwidth for
voice or data traffic.
Select Realtime VBR (real-time Variable Bit Rate) for applications with bursty
connections that require closely controlled delay and delay variation.
Select Non Realtime VBR (non real-time Variable Bit Rate) for connections
that do not require closely controlled delay and delay variation.
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.
This field is not available when you select UBR Without PCR.
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.
This field is available only when you select Non Realtime VBR or Realtime
VBR.
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.
This field is available only when you select Non Realtime VBR or Realtime
VBR.
Select Default Mode to allow only one WAN service over a single virtual
circuit.
Select VLAN MUX Mode to allow multiplexing of multiple protocols over a
single virtual circuit. You need to assign a VLAN ID and priority level to traffic
through each WAN connection. All WAN connections share one MAC address.
This field is not available if you select PPPoA or IPoA as the DSL link type. The
Device uses Default Mode automatically for PPPoA or IPoA.
Select this option to activate QoS (Quality of Service) on this interface to group
and prioritize traffic. Traffic is grouped according to the VLAN group.
The QoS setting applies to all WAN connections over the same PVC.
This field is not available when you select CBR or Realtime VBR.
Click this button to return to the previous screen without saving any changes.
Click this button to save your changes and go back to the previous screen.
P-870HNU-51b User's Guide