ZyXEL Communications P-873HNU-51B, User Manual

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Chapter 6 Broadband
P-873HNU(P)-51B User’s Guide
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VCI 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.
DSL Link Type This field is not editable. EoA (Ethernet over ATM) uses an Ethernet header in
the packet, so that you can have multiple services/connections over one PVC.
You can set each connection to have its own MAC address or all connections
share one MAC address but use different VLAN IDs for different services.
Encapsulation
Mode 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 VDSL Router 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 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 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 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.
Sustain Cell Rate 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 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.
VLAN (These fields appear when the Type is set to ADSL/VDSL over PTM or Ethernet)
Active Select this option to add the VLAN tag (specified below) to the outgoing traffic
through this connection.
802.1p IEEE 802.1p defines up to 8 separate traffic types by inserting a tag into a MAC-
layer frame that contains bits to define class of service.
Select the IEEE 802.1p priority level (from 0 to 7) to add to traffic through this
connection. The greater the number, the higher the priority level.
802.1q Type the VLAN ID number (from 1 to 4094) for traffic through this connection.
QoS If you want to set a rate limit for the connection, enter it in the Rate Limit field.
This is the maximum transmission rate allowed for traffic on this connection.
Apply Click Apply to save your changes back to the VDSL Router.
Cancel Click Cancel to exit this screen without saving.
Table 8
Broadband: Add/Edit: Bridge Mode (continued)
LABEL DESCRIPTION