Positron AK355, Инструкция по установке и эксплуатации

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AK355 System Installation and User's Guide
Positron Access Solutions 42 180-0037-002 R01
See the following table for Ethernet Type of Service Parameters and Values:
Type of S ervice
Parameters Values
Service
Transparent Switch - The CO and RT units behave as a 6-port switch (three
ports on each end). Frames may go from any port to any other port. Frames
are transported transparently.
Transparent Port - CO/RT 1000BaseT Port-1 is connected to Port-1, Port-2 to
Port-2, and Port-3 to Port-3 Data between each port is not mixed. SFP module
cannot be used in this mode.
Tunneled VLAN - VLAN IDs are assigned to each port. The VLAN IDs determine
which packets go to which ports.
Co QoS Mode
QoS - Port, VLAN, and DiffServ priorities are used as the flow control
mechanism. Pause frames are not sent for flow control
Lossless - Pause frames are used as the flow control mechanism. The Port,
VLAN, and DiffServ priorities are also active
RT QoS Mode
QoS - Port, VLAN, and DiffServ priorities are used as the flow control
mechanism. Pause frames are not sent for flow control
Lossless - Pause frames are used as the flow control mechanism. The Port,
VLAN, and DiffServ priorities are also active
Tail Drop Threshold
The Tail Drop Threshold is the number of 256-Byte buffers each Line Card
reserves for its priority queues. Since downstream traffic can arrive at gigabit
speed, each Line Card buffers Ethernet frames as they wait to be sent over
the MSPAN. Each Line Card provides 384 buffers which are shared by all its
priority queues. The default Tail Drop configuration provides the four busiest
priority queues with 96 buffers each. If only two priority queues are used,
increasing the Tail Drop threshold to 192 provides better throughput.