Instruction/ maintenance manual of the product x900-48 series Allied Telesis
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C613-16068-00 REV B www .alliedtelesis.com AlliedW ar e TM OS How T o | Intr oduction This document descri bes some generic configur ation examples for Quality of Service (QoS) on A T -9900 and x900 serie s switches running the AlliedW ar e OS.
Page 2 | AlliedW are™ OS Ho w T o Note: QoS co nfiguration 1 . Setting the egr ess rate 1 . Setting the egr ess rate Example 1 - 1 : Setting the egr ess limit of a switch por t Command: set switch port=24 egress limit=640 This command will set the egress limit of port 24 to 640kbps.
Page 3 | AlliedW are™ OS Ho w T o Note: QoS co nfiguration 1 . Setting the egr ess rate Example 1 -2: setting the maximum bandwid th limit per ingr ess por t Ingress rate limiting cannot be configur ed on the por t per se, but is achieved b y creating a QoS policy with a bandwidth limited traffic class, and applying that policy to each port.
Page 4 | AlliedW are™ OS Ho w T o Note: QoS co nfiguration 1 . Setting the egr ess rate Example 1 -3: Setting the maximum band width limit for each user In example 1 - 1 , we configured an egr e ss rate on por t s. But the granularity of that bandwidth limiting was multiples of 640kbps.
Page 5 | AlliedW are™ OS Ho w T o Note: QoS co nfiguration 1 . Setting the egr ess rate Example 1 -4: Setting the maximum bandwidth limit for each IP subnet This example is very sim ilar to example 1 -3, except that it is assu med that a whole subnet is attached to each por t, not just a single device on each port.
Page 6 | AlliedW are™ OS Ho w T o Note: QoS co nfiguration 1 . Setting the egr ess rate Example 1 -5: Setting the maximum ba ndwidth limit of VLANs Note: The por tgr oup feature is not supported before softwa r e release v2.7.5. If using an earlier softwar e release, use the port parameter on the policy instead.
Page 7 | AlliedW are™ OS Ho w T o Note: QoS co nfiguration 2. Setting the priority on a pack et 2. Setting the priority on a pack et Example 2- 1 : Setting the La y er 2 (VLAN/802. 1 p) priority per ingress port Here we assign differ ent 802. 1 p values to pack ets a rriving on diff erent ports.
Page 8 | AlliedW are™ OS Ho w T o Note: QoS co nfiguration 2. Setting the priority on a pack et Example 2-2: Setting the La y er 2 (VLAN/802. 1 p) priority per VLAN This set of commands will set the La yer 2 pr iority of VLAN2, VLAN3 and VLAN4 traffics pack ets, received on ports 1 to 20, to 6, 5 and 4 r espectivel y .
Page 9 | AlliedW are™ OS Ho w T o Note: QoS co nfiguration 2. Setting the priority on a pack et Example 2-3: Setting the La y er 3 (T OS/DCSP) priority per ingress port Use the same configu ration p.
Page 10 | AlliedW are™ OS Ho w T o Note: QoS configuration 3. Setting the egr ess queues 3. Setting the egr ess queues In this section we look at methods f or direct ing certain packets into certain queues on the egress port.
Page 11 | AlliedW are™ OS Ho w T o Note: QoS configuration 3. Setting the egr ess queues Example 3-2: Setting the egress qu eue according to the ingr ess port This set of commands will set the egress queue of an y traffic receiv ed from port 1 to egress queue 6, from port 2 to egress queue 5, etc .
Page 12 | AlliedW are™ OS Ho w T o Note: QoS configuration 3. Setting the egr ess queues Example 3-3: Configuring WRR for egr ess queues This example is used for configuring WRR on eg ress queues accor ding to the ingress port of the traffic.
Page 13 | AlliedW are™ OS Ho w T o Note: QoS configuration Full QoS scenario 1 : tier ed ser vices for a single customer Full QoS scenario 1 : tier ed ser vices f or a single customer In this sectio.
Page 14 | AlliedW are™ OS Ho w T o Note: QoS configuration Full QoS scenario 1 : tier ed ser vices for a single customer Bronz e traffic is also allow ed to burst up to the full egr ess bandwidth of.
Page 15 | AlliedW are™ OS Ho w T o Note: QoS configuration Full QoS scenario 1 : tier ed ser vices for a single customer The act of assigning packets in a particular traffic class to a par ticular egress queue is achiev ed in the pre-marking process.
Page 16 | AlliedW are™ OS Ho w T o Note: QoS configuration Full QoS scenario 1 : tier ed ser vices for a single customer The Gold traffic must be strictly limited to 2Mbps This is achiev ed by confi.
Page 17 | AlliedW are™ OS Ho w T o Note: QoS configuration Full QoS scenario 1 : tier ed ser vices for a single customer RED cur ves—a r efresher Random Early Disc ard cur ve s are bandwidth clas .
Page 18 | AlliedW are™ OS Ho w T o Note: QoS configuration Full QoS scenario 2: bandwidth limiting of m ultiple customers Full QoS scenario 2: bandwidth limiting of multiple customers In this section, we will build up another r e lativel y complex QoS configuration to suppor t a differ ent scenario.
Page 19 | AlliedW are™ OS Ho w T o Note: QoS configuration Full QoS scenario 2: bandwidth limiting of m ultiple customers The configuration r equired to impose these bandwidth limits would be: Limit.
Page 20 | AlliedW are™ OS Ho w T o Note: QoS configuration Full QoS scenario 2: bandwidth limiting of m ultiple customers create qos traff=9 set qos traff=9 maxband=5 Mbps maxburst=10Kb dropbwc=yes .
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