Chapter 8 Broadband
AX/DX/EX/PX Series User’s Guide
212
8.3 Broadband Settings for Ethernet, AON and PON
Routers
Use this screen to change your Zyxel Device’s Internet access settings. The summary table shows you the
configured WAN services (connections) on the Zyxel Device. Use information provided by your ISP to
configure WAN settings.
Note: The differences of the broadband screens between Ethernet, AON and PON routers are
the type of connections available.
Click Network Setting > Broadband to access this screen.
VCI [32–
65535]
The valid range for the VCI is 32 to 65535 (0 to 31 is reserved for local management of ATM traffic).
Enter the VCI assigned to you.
Encapsulatio
n
Select the method of multiplexing used by your ISP from the drop-down list box. Choices are:
• LLC/SNAP-BRIDGING: In LCC encapsulation, bridged PDUs are encapsulated by identifying the
type of the bridged media in the SNAP header.
• VC/MUX: In VC multiplexing, each protocol is carried on a single ATM virtual circuit (VC). To
transport multiple protocols, the Zyxel Device needs separate VCs. There is a binding between a
VC and the type of the network protocol carried on the VC. This reduces payload overhead
since there is no need to carry protocol information in each Protocol Data Unit (PDU) payload.
Service
Category
Select UBR Without PCR for applications that are non-time sensitive, such as email.
Select CBR (Continuous Bit Rate) to specify fixed (always-on) bandwidth for voice or data traffic.
Select Non Realtime VBR (non real-time Variable Bit Rate) for connections that do not require
closely controlled delay and delay variation.
Select Realtime VBR (real-time Variable Bit Rate) for applications with bursty connections that
require closely controlled delay and delay variation.
Peak Cell
Rate [cells/s]
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. Enter the PCR here. This is not available when
you set the Service Category to UBR Without PCR.
Sustainable
Cell Rate
The Sustain Cell Rate (SCR) sets the average cell rate (long-term) that can be transmitted. Enter the
SCR, which must be less than the PCR. Note that system default is 0 cells/sec. This is not available
when you set the Service Category to UBR Without PCR or CBR.
Maximum
Burst Size
[cells]
Maximum Burst Size (MBS) refers to the maximum number of cells that can be sent at the peak rate.
Enter the MBS, which is less than 65535. This is not available when you set the Service Category to
UBR Without PCR or CBR.
Cancel Click Cancel to exit this screen without saving any changes.
Apply Click Apply to save your changes.
Table 46 Network Setting > Broadband > Add/Edit New WAN Interface (Bridge Mode) (continued)
LABEL DESCRIPTION
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