22.10.2013 Views

FTOS Configuration Guide for Z9000 System - Force10 Networks

FTOS Configuration Guide for Z9000 System - Force10 Networks

FTOS Configuration Guide for Z9000 System - Force10 Networks

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Figure 32-1. Dell <strong>Force10</strong> <strong>Networks</strong> QoS Architecture<br />

Ingress<br />

Packet<br />

Processing<br />

Rate Limiting<br />

Packet<br />

Classification<br />

(ACL)<br />

Egress<br />

Congestion Management<br />

(WFQ Scheduling)<br />

Marking<br />

(DiffServ,<br />

802.1p, Exp)<br />

Buffers<br />

Class-based<br />

Queues<br />

Congestion<br />

Avoidance<br />

(WRED)<br />

Implementation In<strong>for</strong>mation<br />

Dell <strong>Force10</strong>’s QoS implementation complies with IEEE 802.1p User Priority Bits <strong>for</strong> QoS Indication. It<br />

also implements these Internet Engineering Task Force (IETF) documents:<br />

• RFC 2474, Definition of the Differentiated Services Field (DS Field) in the IPv4 Headers<br />

• RFC 2475, An Architecture <strong>for</strong> Differentiated Services<br />

• RFC 2597, Assured Forwarding PHB Group<br />

• RFC 2598, An Expedited Forwarding PHB<br />

You cannot configure port-based and policy-based QoS on the same interface, and SONET line cards<br />

support only port-based QoS.<br />

Port-based QoS <strong>Configuration</strong>s<br />

You can configure the following QoS features on an interface:<br />

• Set dot1p Priorities <strong>for</strong> Incoming Traffic<br />

• Configure Port-based Rate Policing<br />

Rate Policing<br />

Egress<br />

Packet<br />

Processing<br />

Buffers<br />

Class-based<br />

Queues<br />

Traffic<br />

Shaping<br />

Switching<br />

Quality of Service (QoS) | 621

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!