Case 6401 - Explanation of Options

Case Communications 6401 Rugged ADSL Router Manual – Rev 1.5
SECTION 5 – ADVANCED CONFIGURATION Page 5.5
5.1.5. EXPLANATION OF OPTIONS
ATM WAN INTERFACE OPTIONS
Under the ATM Interface we have the following options
EoA – Ethernet over ATM
Used for Point to Point Protocol over Ethernet, IP Over Ethernet or Bridging.
PPPoA – Point to Point Protocol Over ATM.
The Point-to-Point Protocol over ATM (PPPoA) is a network protocol for encapsulating PPP frames
in AAL5. For more details on PPPoA please refer to PPPoA within the WAN Configuration
IPoA – IP over ATM
The use of Asynchronous Transfer Mode (ATM) technology and services creates the need for an
adaptation layer in order to support information transfer protocols, which are not based on ATM. This
adaptation layer defines how to segment and reassemble higher-layer packets into ATM cells, and
how to handle various transmission aspects in the ATM layer.For more information on IPoA please
refer to IPoA within the WAN Configuration part of this manual.
SERVICE CATEGORY TABLE
UBR Without PCR (Default)
Select IP QoS Scheduler Algorithm
Strict Priority
Select strict or weighted
Precedence of the default queue
8 [Lowest]
Weighted Fair Queuing
Weight Value of the default queue: [1-63]
1
Enter value 1 to 63 (Default 1)
MPAAL Group Precedence:
8
Select value 1 to 8 (Default 8)
UBR With PCR
Peak Cell Rate: [cells/s]
Enter Peak Cell Rate Value (0 – 4095)
CBR
Peak Cell Rate: [cells/s]
Enter Peak Cell Rate Value (0-4095)
Non Real time VBR
Peak Cell Rate: [cells/s]
Enter Peak Cell Rate Value (0-4095)
Sustainable Cell Rate: [cells/s]
Enter Sustainable Cell Rate Value (0-4095)
Maximum Burst Size: [cells]
Enter Maximum Burst Size Value (0-4095)
Real time VBR
Peak Cell Rate: [cells/s]
Enter Peak Cell Rate Value (0-4095)
Sustainable Cell Rate: [cells/s]
Enter Sustainable Cell Rate Value (0-4095)
Maximum Burst Size: [cells]
Enter Maximum Burst Size Value (0-4095)
ENCAPSULATION MODES.
There are two main methods of Virtual circuit multiplexing.
VC-MUX is one of the two (the other being LLC encapsulation) mechanisms for identifying the
protocol carried in ATM Adaptation Layer 5 (AAL5) frames specified by RFC 2684, Multiprotocol
Encapsulation over ATM.
VC MUX
With virtual circuit multiplexing, the communicating hosts agree on the high-level protocol for a
given circuit. It has the advantage of not requiring additional information in a packet, which
minimizes the overhead. For example, if the hosts agree to transfer IP, a sender can pass each
datagram directly to AAL5 to transfer, nothing needs to be sent besides the datagram and the AAL5