Planet GRT-501, User Manual

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GRT-501 G.SHDSL.bis Bridge Router User’s Manual
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4.2.2 WAN
The GRT-501 supports up to 8 PVCs. WAN 1 was configured via BASIC except QoS. If you want to setup the
PVC 2 to 7, the parameters are setup in the page of WAN under ADVANCED. On the other hand, you do not
need to setup WAN except you apply two or more Internet Services with ISPs.
Web UI Configuration
Step 1.
Click WAN under the Advanced menu for
configure the WAN parameters.
Step 2.
Enter the parameters:
If WAN Protocol is
PPPoA or PPPoE with
dynamic IP, leave the default WAN IP
Address and Subnet Mask as default
setting. The system will ingore the IP
Address and Subnet Mask information,
but erasion or blank in default setting will
cause system error.
If the WAN Protocol is
IPoA or EoA ,
leave the ISP parameters as default
setting. The system will ingore the
information, but erasion or blank in
default setting will cause system error.
QoS (Quality of Service):
The Traffic Management Specification V4.0 defines ATM service cataloges that describe both the traffic
transmitted by users onto a network as well as the Quailty of Service that the network need to provide for that
traffic.
UBR (Unspecified Bit Rate) is the simplest service provided by ATM networks. There is no guarantee of
anything. It is a primary service used for transferring Internet traffic over the ATM network.
CBR (Constant Bit Rate) is used by connections that requires a static amount of bandwidth that is avilable
during the connection life time. This bandwidth is characterized by Peak Cell Rate (PCR). Based on the PCR
of the CBR traffic, specific cell slots are assigned for the VC in the schedule table. The ATM always sends a
signle cell during the CBR connection’s assigned cell slot.
VBR-rt (Varible Bit Rate real-time) is intended for real-time applications, such as compressed voice over IP
and video comferencing, that require tightly constrained delays and delay variation. VBR-rt is characterized by
a peak cell rate (PCR), substained cell rate (SCR), and maximun burst rate (MBR).
VBR-nrt (Varible Bit Rate non-real-time)