ZyXEL P-791R v2 ユーザーガイド
P-791R v2 Support Notes
Make sure the P-791R v2 is connected to the power adapter, the power
adapter is plugged into a power outlet and the power switch is at the ON
position.
adapter is plugged into a power outlet and the power switch is at the ON
position.
8. How to debug while DSL LED is off?
Check the connection between the P-791R v2's DSL port and the wall socket
or remote devices. If you use the back to back application, check the service
type and the Standard Mode in both P-791R v2s.
or remote devices. If you use the back to back application, check the service
type and the Standard Mode in both P-791R v2s.
9. How do I verify my PC's IP address assigned by the P-791R v2?
Make sure you have the P-791R v2 powered on and then turn on your PC.
After the PC starts, select " Run..." from the windows "Start" menu. Enter
"cmd" and click OK.You may check IP of your PC with “ipconfig”. Verify your
cabling if the IP address box shows "0.0.0.0".
After the PC starts, select " Run..." from the windows "Start" menu. Enter
"cmd" and click OK.You may check IP of your PC with “ipconfig”. Verify your
cabling if the IP address box shows "0.0.0.0".
10. What is Traffic Shaping?
Traffic Shaping is a feature in the P-791R v2. It allocates the bandwidth to
WAN dynamically and aims at boosting the efficiency of the bandwidth. If there
are serveral VCs in the P-791R v2 but only one VC activated at one time, the
P-791R v2 allocates all the Bandwidth to the VC and the VC gets full
bandwidth. If another VCs are avtivated later, the bandwidth is yield to other
VCs after ward.
WAN dynamically and aims at boosting the efficiency of the bandwidth. If there
are serveral VCs in the P-791R v2 but only one VC activated at one time, the
P-791R v2 allocates all the Bandwidth to the VC and the VC gets full
bandwidth. If another VCs are avtivated later, the bandwidth is yield to other
VCs after ward.
11. What do the parameters (PCR, SCR, MBS) mean?
Traffic shaping parameters (PCR, SCR, MBS) can be set in Menu 4 and Menu
11.6 and is valid for both incoming and outgoing direction since G.shdsl is
symmetric.
Peak Cell Rate(PCR): The maximum bandwidth allocated to this connection.
The VC connection throughput is limited by PCR.
Sustainable Cell Rate(SCR): The least guaranteed bandwidth of a VC.
When there are multi-VCs on the same line, the VC throughput is guaranteed
by SCR.
Maximum Burst Size(MBS): The amount of cells transmitted through this
VC at the Peak Cell Rate before yielding to other VCs. Total bandwidth of the
line is dedicated to single VC if there is only one VC on the line. However, as
the other VC asking the bandwidth, the MBS defines the maximum number of
cells transmitted via this VC with Peak Cell rate before yielding to other VCs.
11.6 and is valid for both incoming and outgoing direction since G.shdsl is
symmetric.
Peak Cell Rate(PCR): The maximum bandwidth allocated to this connection.
The VC connection throughput is limited by PCR.
Sustainable Cell Rate(SCR): The least guaranteed bandwidth of a VC.
When there are multi-VCs on the same line, the VC throughput is guaranteed
by SCR.
Maximum Burst Size(MBS): The amount of cells transmitted through this
VC at the Peak Cell Rate before yielding to other VCs. Total bandwidth of the
line is dedicated to single VC if there is only one VC on the line. However, as
the other VC asking the bandwidth, the MBS defines the maximum number of
cells transmitted via this VC with Peak Cell rate before yielding to other VCs.
The P-791R v2 holds the parameters for shaping the traffic among its virtual
channels. If you do not need traffic shaping, please set SCR = 0, MBS = 0 and
channels. If you do not need traffic shaping, please set SCR = 0, MBS = 0 and
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