Setting up the Interfaces of the Services Ready Platform
Setting up the WAN Interface
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Services Ready Platform SRP 500 Series Administration Guide
4
VC Setting
Field
Description
Encapsulation
Encapsulation is the protocol used between your
broadband gateway and your ISP's servers. Most of the
encapsulations are defined in Internet standards called
Requests for Comments (RFCs). Two are derived from
the Point-to-Point Protocol (PPP): PPP over Ethernet
(PPPoE) and PPP over ATM (PPPoA).
Multiplexing
Select the method used to route different kinds of data
through different virtual circuits (VCs) in the ATM
network: Logical Link Control (LLC) encapsulation (also
called LLC-SNAP) or Virtual Channel (VC) multiplexing
(also called VC-Mux).
QoS Type
Select the Quality of Service (QoS) method your ISP
uses on your line: Unspecified Bit Rate (UBR), Constant
Bit Rate (CBR), Real-Time Variable Bit Rate (RTVBR), or
Non-Real-Time Variable Bit Rate(NRTVBR). CBR
provides the best guarantee of low latency; UBR
provides none.
•
Pcr Rate—When QoS is set to CBR, VBR_RT, or
VBR_NRT, the Peak Cell Rate (PCR) in cells per
second must be entered here.
•
Scr Rate—When QoS is set to VBR_NRT or
VBR_RT, the Sustained Cell Rate (SCR) in cells
per second must be entered here.
•
MBS—When QoS is set to VBR_NRT or VBR_RT,
the MBS in cells per second must be entered
here.
•
CDVT—When QoS is set to CBR, VBR_NRT or
VBR_RT, the CDVT in cells per second must be
entered here.
VPI/VCI Auto Detect
You can enable or disable automatic detection of the VPI
and VCI values that identify your line to the ATM
network. The Virtual Path Identifier (VPI) and Virtual
Channel Identifier (VCI) are values used to identify your
line to your ISP's ATM network.