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CDM-800 Gateway Router
Ethernet Management
For an active configuration, note the following:
QoS Control
Mode – Use the drop-down menu to select QoS operation as Diffserv or Off. Click [Submit]
once the desired operational setting has been made.
Differentiated Services
Priority – IP traffic is prioritized based upon the DSCP (DiffServ Code Points) Class Selector
Precedence.
Per-Hop Behavior (PHB) – Traffic class that determines how packets will be forwarded.
Codepoint (DSCP) – Codepoint value in Type of Service (ToS) byte in IP header.
The user has the option of configuring each queue to one of the following attributes (the
acceptable ranges are shown in brackets):
Service Rate (Kbps) [0.000 / (Tx Data Rate)] – The minimum bandwidth will be served first
among the Assured Forwarding (ASFD) classes in case of bandwidth availability once Class
Selector 7 through Class Selected 1 have been serviced.
Drop Precedences – ASFD Class 4 through 1 Code Points (b100xx0, b011xx0, b010xx0, and
b001xx0) carry the drop precedence value (xx). In case of network congestion, a Weighted
Random Early Detection (WRED) congestion avoidance algorithm is imposed on these queues to
drop the packets randomly rather than 'tail drop.'
•
Low Drop Precedence (% full) [0–100] – In case of congestion, the WRED is applied
after the queue depth exceeds the configured percentage value assigned for the Drop
Precedence value b001.
•
Med. Drop Precedence (% full) [0–99] – In case of congestion, the WRED is applied
after the queue depth exceeds the configured percentage value assigned for the Drop
Precedence value b010.
•
High Drop Precedence (% full)) [0–99] – In case of congestion, the WRED is applied
after the queue depth exceeds the configured percentage value assigned for the Drop
Precedence value b011.
Click [Submit] after all values have been adjusted to save settings.
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Revision 0
MN-CDM800
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