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Field Name
Description
Select DSL Latency Select the level of DSL latency. Options are:
l
Path0 (Fast)
: No error correction and can provide lower latency on error-free lines. This is the
default.
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Path1 (Interleaved)
: Error checking that provides error-free data which increases latency.
Select DSL Link
Type
Select the linking protocol. Options are:
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EoA:
Ethernet over ATM, used for PPPoE, IPoE, and Bridge. This is the default.
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PPPoA:
Point-to-Point Protocol over ATM.
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IPoA:
Internet Protocol over ATM.
Encapsulation Mode Select whether multiple protocols or only one protocol is carried per PVC (Permanent Virtual Circuit).
Options are:
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LLC/ENCAPSULATION
: (
Available for PPPoA only
) Logical Link Control (LLC) encapsulation protocols
used with multiple PVCs
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LLC/SNAP-BRIDGING:
(
Available for EoA only
) Logical Link Control used to carry multiple protocols
in a single PVC.
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LLC/SNAP-ROUTING
: (
Available for IPoA only
) LLC used to carry one protocol per PVC.
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VC/MUX:
Virtual Circuit/Multiplexer creates a virtual connection used to carry one protocol per
PVC.
Service Category
Select the bit rate protocol. Options are:
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UBR without PCR:
Unspecified Bit Rate with no Peak Cell Rate, flow control or time synchronization
between the traffic source and destination. Commonly used with applications that can tolerate
data / packet loss.
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UBR with PCR:
Same as above but with a Peak Cell Rate.
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CBR:
Constant Bit Rate relies on timing synchronization to make the network traffic predictable.
Used commonly in Video and Audio traffic network applications.
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Non Realtime VBR:
Non Realtime Variable Bit Rate used for connections that transport traffic at a
variable rate. This category requires a guaranteed bandwidth and latency. It does not rely on tim-
ing synchronization between the destination and source.
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Realtime VBR:
Realtime Variable Bit Rate. Same as the above option but relies on timing and syn-
chronization between the destination and source. This category is commonly used in networks with
compressed video traffic.
Select Scheduler
for Queues of Equal
Precedence as the
Default Queue
Select the algorithm used to schedule queue behavior. VC scheduling is different than scheduling done
for default queues. Options are:
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Round Robin (weight=1)
: Packets are accessed in a round robin style. Classes can be assigned.
Time slices are assigned to each process in equal portions and in circular order, handling all pro-
cesses without priority (also known as cyclic executive). This is the default.
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Weighted Fair Queuing
: Packets are assigned in a specific queue. This data packet scheduling
technique allows different scheduling priorities to be assigned to statistically multiplexed data
flows. Since each data flow has its own queue, an ill-behaved flow (that sent larger packets or
