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Title: R&S Quick Notes – QOS

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QOS     Class class-default need “fair-queue” if “bandwidth” was not specified.     When using “ip rsvp bandwidth” on a sub-interfaces, it is also required to be configured on the main interface.     When using multiple sub-interfaces with “ip rsvp bandwidth”, the main interface should be configured to be the sum all sub-interfaces.     RSVP requires fair-queue to be enabled. With FRTS, WFQ is disabled by default, re-enable with “frame-relay fair-queue” in the map-class.     When doing MQC configurations using the bandwidth percent command, do not forget to change the “max-reserve-bandwidth %”.     Custom queueing defaults – Byte-count = 1500 bytes & Queue-limit = 20.     Know the NBAR mime categories: “image/*” or “audio/*”  or  “application/*”  or  “text/*”     Voice EF class = 46 decimal and 101110 in dscp-binary.     FRTS formulas:     Bc = CIR * Tc  Be = (CAR – CIR) * Tc     WRED formula:    = (1/MPD)     CAR (Police) formula:    Bc = CIR / 8 * Tc           (Default Tc = 1.5 seconds)  Be = 2 * Bc

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Post date: 2009-06-24 11:11:15

Post date GMT: 2009-06-24 03:11:15

Post modified date: 2010-07-24 14:31:47

Post modified date GMT: 2010-07-24 06:31:47



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