Edge-Core ES4528V-38, Management Manual, Page: 110 / 396

C
HAPTER
4
| Configuring the Switch
Quality of Service
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P
ARAMETERS
The following parameters are displayed on the DSCP Remarking
Configuration page:
◆
Port - Port identifier.
◆
DSCP Remarking Mode - Enables or disables remarking of the DSCP
bits for egress packets placed in this queue. (Default: Disabled)
◆
DSCP Queue Mapping - Maps the DSCP value assigned to egress
packets entering each queue. Supported DSCP code points include:
■
Best Effort - This is the common, best-effort forwarding behavior
standardized in RFC1812. When no other suitable criteria are
available to classify a packet, it is assumed that it belongs to this
service aggregate. Such packets may be sent into a network
without adhering to any particular rules, and the network will
deliver as many of these packets as possible and as soon as
possible. A reasonable implementation would be a queueing
discipline that sends packets of this aggregate whenever the output
link is not required to service any of the other queues.
■
CS1 - CS7 - Class Selector code points which use values compatible
with IP Precedence and IEEE 802.1p.
■
Expedited Forwarding - DSCP value assigned to highest priority
traffic as described in RFC2598. This code point can be used to build
a low loss, low latency, low jitter, assured bandwidth, end-to-end
service through DiffServ domains. Such a service appears to the
endpoints like a point-to-point connection or a “virtual leased line.”