May 2009
Intermediate to advanced
512 pages
13h 14m
English
Content preview from Deploying QoS for Cisco IP and Next Generation Networks
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Chapter 10
Cisco IOS and IOS-XR Quality-of-Service Implementation for IP Internet Services
10.1 Overview
Now that we’ve discussed the implementation of QoS for MPLS VPN service that is categorized as labeled traffic, this section takes a look at the various IOS and IOS-XR configuration templates for unlabeled traffic. By definition, unlabeled traffic does not consist of an MPLS header, and hence the QoS policies will need to use an alternate scheme of marking and classifying within the SP network core, instead of MPLS Experimental bits. Hence IP traffic that is unlabeled can use IP precedence or IP DSCP bits for this purpose. Using IP DSCP bits for QoS marking and classification provides more flexibility for reasons mentioned in Chapter 2, “Introduction ...
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