Specifications

Waters Network Systems User’s Manual Page 98
PS-2126M-POE
High Priority Packet streams will experience less delay into the switch. For handing different
priority packets, each egress port has up to four queues. Each QoS is influenced by two
scheduling schemes, WRR (Weighted Round Robin) and Strict Priority. Once the priority
mapping is set to the queue, WRR scheduling will distribute the bandwidth according to the
weight you set for four queues (queue 0 to queue 3). Strict Priority is used for the VIP Port of
QoS. If some ports are designated as the VIP Port, these ports will own the highest
transmitting priority in egress queue of the switch.
The QoS functions mentioned above can be enabled at the same time. But, the following
precedence will determine whether they work:
1. Enable both VIP and TOS
Choose priorities of VIP and TOS.
2. Enable both VIP and DSCP
Choose priorities of VIP and DSCP.
3. Enable both TOS and DSCP
Choose "DSCP".
4. Enable both VIP and DSCP
Choose priorities of VIP and DSCP.
5. Enable both 802.1p and TOS
Choose "TOS".
6. Enable both 802.1p and DSCP
Choose "DSCP".
7. Enable both 802.1p and DSCP and TOS
Choose "DSCP".
8. Enable both 802.1p and DSCP and TOS and VIP
Choose priorities of VIP and DSCP.
** VIP/DSCP > TOS > 802.1p (Final result)
Function name:
QoS Global Setting
Function description:
In order to use the QoS functions, the QoS mode must be enables in advance. Then, you can use
MAC Priority, 802.1p Priority, IP TOS Priority, DiffServ DSCP Priority, or VIP Port functions. In this
function, you can Enable the QoS Mode. Choose any of the Priority Controls, such as 802.1p, TOS,
DSCP. You can also select a Scheduling Method of WRR (Weighted Round Robin) or Strict Priority.
Once those have been set, you can arrange Weight values for queue 0 to queue 3.
Parameter description: