ActionTec MI424-WR User Manual page 164

o for ingress data has the following limitations, which do not exist for outgoing
Q S
data:
• o can only be applied to
Q S
• No borrowing mechanism
• When reserving Rx bandwidth, it is strictly taken from the bandwidth of all
other classes
Furthermore, the Router cannot control the behavior of the
have proper o handling. Unfortunately, this is a common situation. Let's look
Q S
at a scenario of downloading a large file and surfing the Internet at the same time.
Downloading the file is distinguished by small requests, followed by very large
responses. This may result in blocking
situation is limiting the bandwidth of low-priority
download).
Differentiated Services Code Point Settings
In order to understand what
Differentiated Services model.
Differentiated Services (Diffserv) is a Class of Service (Co
best-effort Internet services by differentiating traffic by users, service requirements,
and other criteria. Packets are specifically marked, allowing network nodes to
provide different levels of service, as appropriate for voice calls, video playback, or
other delay-sensitive applications, via priority queuing or bandwidth allocation, or
by choosing dedicated routes for specific traffic flows.
Diffserv defines a field in
Codepoint ( ). Hosts or routers passing traffic to a Diffserv-enabled network
DSCP
will typically mark each transmitted packet with an appropriate
markings are used by Diffserv network routers to appropriately classify packets and
to apply particular queue handling or scheduling behavior
The Router provides a table of predefined
802.1p priority marking method. Any of the existing
deleted, and new entries can be added.
Appendix A Quality of Service
streams (
TCP
HTML
is, one must first be familiarized with the
DSCP
packet headers referred to as the Differentiated Services
IP
DSCP
161
streams cannot be delayed)
UDP
ISP
traffic at the . A solution for such a
ISP
connections (such as the file
TCP
) model that enhances
S
values, which are mapped to
setting can be edited or
DSCP
, which may not
. The
DSCP DSCP