S1720, S2700, S5700, and S6720 V200R011C10 Configuration Guide - QoS
This document describes the configurations of QoS functions, including MQC, priority mapping, traffic policing, traffic shaping, interface-based rate limiting, congestion avoidance, congestion management, packet filtering, redirection, traffic statistics, ACL-based simplified traffic policy, and HQoS.
This document describes the configurations of QoS functions, including MQC, priority mapping, traffic policing, traffic shaping, interface-based rate limiting, congestion avoidance, congestion management, packet filtering, redirection, traffic statistics, ACL-based simplified traffic policy, and HQoS.
(Optional) Configuring the Data Buffer
Context
The data buffer caches packets to be sent from an interface to prevent packet loss upon traffic bursts. When the data buffer is full, the device does not cache packets and directly discards packets not entering the buffer. You can adjust the buffering capacity of interface queues to improve the forwarding performance.
Procedure
- Configure the maximum ratio of the dynamic buffer occupied
by a queue on an interface of the S5720EI, S6720EI, and S6720S-EI.
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The maximum ratio of the dynamic buffer occupied by a queue on an interface and a burst traffic buffering mode of the interface or switch cannot be configured simultaneously.
- Configure a burst traffic buffering mode on an interface of
the S5720EI, S6720EI, and S6720S-EI.
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A burst traffic buffering mode and the maximum ratio of the dynamic buffer occupied by a queue cannot be configured on the same interface simultaneously.
- Configure a burst traffic buffering mode of the S5720EI,
S6720EI, and S6720S-EI.
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A burst traffic buffering mode on a switch and the maximum ratio of the dynamic buffer occupied by a queue on an interface cannot be configured simultaneously.
- Configure queue lengths on an interface of the S1720GFR, S1720GW, S1720GWR,
S1720X, S1720GW-E, S1720GWR-E, S1720X-E, S2720EI, S2750EI, S5700LI, S5700S-LI, S5710-X-LI, S5720LI, S5720S-LI,
S5720SI, S5720S-SI, S5730SI, S5730S-EI, S6720LI, S6720S-LI, S6720SI, and S6720S-SI.
