PLANET VC-810S - Manual (Page 58)

User’s Manual of VC-810S / VC-810S48
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4.5.2 DSCP QoS Mode
DiffServ Code Point (DSCP) － is the traffic prioritization bits within an IP header that are encoded by certain applications
and/or devices to indicate the level of service required by the packet across a network.
The Quality of Service page provides fields for defining output queue to specific DSCP fields. When TCP/IP’s
TOS/DSCP mode is applied, the VDSL2 Switch recognizes TCP/IP Differentiated Service Codepoint (DSCP) priority
information from the DS-field defined in RFC2474. Select the QoS mode to TOS/DSCP, the DSCP to priority mapping
page appears, as the Figure 4-35 shows.
Figure 4-35 DSCP QoS Configuration screen
The page includes the following fields:
• Object • Description
• QoS Mode The draw menu allows customization of QoS mode for Traffic classifiers.
• 802.1p Tag Priority
• TOS / DSCP
• Port-Base Priority
Flow Control Auto
Turn off Enable – the Switch can automatically turn off IEEE 802.3x flow control and back
pressure flow control for 1~2 seconds whenever the port receives a high priority
packet. Flow control is re-enable when no priority packets are received for 1~2
seconds.
Disable- the flow control ability of this port for any packet will be enabled as it was
set.