Enterasys 7g4270-09 Manuel Complémentaire
February 22, 2008
Page 1 of 29
QoS Configuration
This chapter describes the QoS feature as it is implemented on the Matrix N‐Series Switch/Router,
SecureStack, and Secure Switch.
SecureStack, and Secure Switch.
What Is Quality of Service?
Quality of Service (QoS) is:
•
A mechanism for the management of bandwidth
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The ability to give preferential treatment to some packets over others
•
Based upon packet classification and forwarding treatment
You configure packet preference and forwarding treatment based upon a flow’s sensitivity to
delay, delay variation (jitter), bandwidth, availability and packet drop. QoS uses packet priority, in
conjunction with queue treatment configuration, to determine the interface’s inbound and
forwarding behavior for this packet. Packet preference and forwarding treatment for a given flow
can be applied to roles configured in Enterasys policy.
delay, delay variation (jitter), bandwidth, availability and packet drop. QoS uses packet priority, in
conjunction with queue treatment configuration, to determine the interface’s inbound and
forwarding behavior for this packet. Packet preference and forwarding treatment for a given flow
can be applied to roles configured in Enterasys policy.
Why Would I Use It in My Network?
Without QoS, all packets are treated as though the delivery requirements and characteristics of
any given packet are equal to any other packet. In other words, non‐QoS packet delivery is not
able to take into account application sensitivity to packet delay, jitter, amount of bandwidth
any given packet are equal to any other packet. In other words, non‐QoS packet delivery is not
able to take into account application sensitivity to packet delay, jitter, amount of bandwidth
Note: Please see the Enterasys Matrix™ X Secure Core Router Configuration Guide for a
complete discussion of QoS as it applies to the Matrix X-Series.
complete discussion of QoS as it applies to the Matrix X-Series.
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