SMC Networks 8028L2 - annexe 1 Management Manual page 109

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."
– 109 –
| Configuring the Switch
C 4
HAPTER
Quality of Service