Archive for the 'QoS' Category

Feb 09 2010

HP Flex-10 versus Nexus 5000 & Nexus 1000V with 10GE passthrough

Published byBrad Hedlund under Data Center, FCoE, Nexus, QoS

I had an interesting discussion with a customer the other day where both Cisco (myself included) and HP account teams where on the same call to discuss Flex-10, Nexus 1000V, or other approaches that may work better. — Yeah, awkward.
Anyway, for most of the time we (the Cisco team) focused on Flex-10’s total lack of [...]

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Nov 19 2007

DSCP Assured Forwarding PHB

Published byBrad Hedlund under QoS

RFC 2597 defines a group of DSCP settings called “Assured Forwarding” Per Hop Behavior (PHB) to be recognized by RFC compliant DSCP routers and switches called DS nodes. The Assured Forwarding PHB class is presented as AF(xy), where x=traffic class, and y=drop precedence. 4 traffic classes, and 3 drop precedences are defined. For example, AF21 [...]

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