Virtual Circuit ID:
VPI and VCI define a virtual circuit.
VPI: The valid range for the VPI is 0 to 255
VCI: The valid range for the VCI is 32 to 65535
ATM QoS Type:
Select
CBR
to specify fixed (always-on) bandwidth for voice or
data traffic. Select
UBR
for applications that are non-time sensitive, such as e-mail.
Select
VBR
for burst traffic and bandwidth sharing with other applications.
Cell Rate:
Cell rate configuration often helps eliminate traffic congestion that slows
transmission of real time data such as audio and video connections.
Peak Cell Rate: Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to find
the Peak Cell Rate (PCR).
Sustain Cell Rate: The Sustain Cell Rate (SCR) sets the average cell rate (long-term)
that can be transmitted.
Maximum Burst Size: Maximum Burst Size (MBS) refers to the maximum number of
cells that can be sent at the peak rate.
Login Information:
PPPoA and PPPoE encapsulation only.
Service Name: Type the name of your PPPoE service here
User Name: Enter the user name exactly as your ISP assigned.
Password: Enter the password provide by your ISP.
Connection:
The schedule rule(s) have priority over your Connection settings.
Nailed-Up Connection: Select Nailed-Up Connection when you want your connection
up all the time.
Connect on Demand: Select Connect on Demand when you don't want the connection
up all the time and specify an idle time-out in the Max Idle Timeout field
Max Idle Timeout: Specify an idle time-out in the Max Idle Timeout field
TCP MSS Option:
This will increase the current MSS limit to the number specified,
hence the tweak test will report Max Packet Size as the specified number plus 40*.
4.2.5 NAT
NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP
address of a host in a packet.
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