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INTEGRA/-S/-G/-GS User Manual
2) Scheduler – Indicates whether CoSQ scheduler is enabled on the particular port.
Corresponds to the "CoSQ" setting in the
configuration
page.
3) CoSQ Mode – Indicates which CoSQ scheduler mode is set on a particular port
(status mode); allows setting Strict Priority (SP); Round Robin (RR) or Weighted
Round Robin (WRR) if "Frame Based (SP/RR/WRR)" schedulers mode is set or Strict
Priority (SP) or Deficit Weighted Round Robin (DWRR) if "Byte Based (SP/DWRR)" is
set in
Networking→QoS→General QoS configuration
SP – scheduler drains all packets queued in the highest priority queue before
continuing to service lower priority queues. Such an approach can be used for
latency-sensitive traffic.
RR – scheduler drains all queues consecutively with the same ratio
(1:1:1:1:1:1:1:1). Such an approach allows utilizing droplimit buffers of all
available queues.
WRR – scheduler drains all queues consecutively according to the specified ratio
(queue weights) specified in a number of packets. The default ratio is equal for
all queues (1:1:1:1:1:1:1:1). Such an approach allows for minimizing stacking
delay for high-priority traffic and at the same time retaining traffic flow at lower-
priority queues.
DWRR – scheduler drains all queues consecutively according to the specified
ratio (queue weights) specified in kilobytes (KB). Compared to WRR excess
bandwidth used in the current pass is remembered and subtracted from the
allocated weight in the next pass and as a result statistically over time
bandwidth used by each queue will be closer to the configured value. Default
ratio is equal for all queues (1:1:1:1:1:1:1:1).
4) Droplimit – Indicates droplimit buffer size assigned for each queue (status mode);
allows modifying droplimit buffer size for each queue (modify mode). By default, a
2000KB droplimit buffer size is assigned for queue #0 (lowest priority) and 1000KB
for all other queues. Maximum size 4000KB.
Increasing buffer size increases data transmission latency.
5) Weight – Indicates weights in packets or kilobytes configured for WRR or DWRR
respectively (status mode); allows configuring weights in packets or kilobytes for
WRR or DWRR respectively (modify mode). The default weight is set to "1" for each
queue. The value range is 1..255.
6) Bandwidth limit – Indicates whether the rate limit is enabled on any of the available
queues (status mode); allows specifying rate limit value on any of the available
queues (modify mode). The bandwidth limit is available only on LAN ports.
7) Low latency queues – Indicates whether modem low latency queue is enabled for the
priority queues (status mode); allows disabling low latency queues, thus enabling
packet fragmentation and interleaving (modify mode). Please refer to Chapter
Fragmentation and interleaving
only on the WAN port.
8) By pressing „Execute configuration", changes made to the corresponding section
apply only to the local side Integra/Integra-S/Integra-G/Integra-GS. If „Rollback on" is
selected, the configuration will be reverted in case erroneous configuration changes
are applied.
CLI commands
(Chapter 4: COMMAND LINE
network qos set <port> cosq
SAF Tehnika JSC
for further details. Low latency queues are available
INTERFACE)
Use to set CoSQ scheduler mode on a particular port.
WEB GUI
Networking→QoS→General QoS
(modify mode).
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