Enterprise QoS Solution Reference Network Design Guide

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Catalyst 3550—QoS Considerations and Design 2-38 Enterprise QoS Solution Reference Network Design Guide Chapter 2 Campus QoS Design CAT3550(config)# CAT3550(config)#ip access list standard ANY ! Workaround ACL CAT3550(config-std-nacl)# permit any CAT3550(config-std-nacl)#end CAT3550# Catalyst MLS QoS Verification Commands The Catalyst MLS QoS verification commands for the Conditionally-Trusted IP Phone + PC + Scavenger (Basic) Model Configuration include the following: show mls qos show mls qos map show mls qos interface show mls qos interface policers show mls qos statistics show class-map show policy-map show policy interface Note While Catalyst 3550 IOS syntax supports the match any criteria within a class-map (which the parser allows to be configured in conjunction with a per-VLAN policy), testing with some versions of Catalyst 3500 IOS have revealed a limitation with this function, since it does not match any other traffic on a per-VLAN basis. Hence an explicit access list named ANY has been used in the example above as a workaround. Catalyst 3550—Conditionally-Trusted IP Phone + PC with Scavenger-Class QoS (Advanced) Model Configuration This section includes the following topics: Configuration Catalyst MLS QoS Verification Commands The Conditionally-Trusted IP Phone + PC + Scavenger Advanced model builds on the Basic model by including policers for PC-based video-conferencing (and/or PC SoftPhone), Mission-Critical Data applications, Transactional Data applications, and Bulk Data applications. This model is graphically depicted in Figure 2-9. The Catalyst 3550 can support 8 policers per 10/100 Ethernet port and so can support this Advanced Model. The Catalyst 3550 configuration for the Conditionally-Trusted IP Phone + PC with Scavenger-Class QoS (Advanced) Model is shown below. In this example, the same Server-to-Client applications are used as in the Untrusted Multi-Application Server example. However, notice that the Source/Destination ports are reversed for the Client-to-Server direction of traffic flow. Also, due to the limit of the number of Version 3.3
Chapter 2 Campus QoS Design Version 3.3 Catalyst 3550—QoS Considerations and Design policers per FastEthernet port (8), there is no explicit policer for SoftPhone call signaling traffic; to work around this limitation, SoftPhone call signaling traffic is included in the Mission-Critical Data applications access list . Example 2-21 Catalyst 3550—Conditionally-Trusted IP Phone + PC + Scavenger (Advanced) Model Configuration CAT3550(config)#mls qos map cos-dscp 0 8 16 24 32 46 48 56 ! Modifies CoS-to-DSCP mapping to map CoS 5 to DSCP EF CAT3550(config)#mls qos map policed-dscp 0 10 18 24 25 34 to 8 ! Excess DVLAN traffic marked 0, AF11, AF21, CS3, DSCP 25, ! and AF41 will be remarked to Scavenger (CS1) CAT3550(config)# CAT3550(config)#class-map match-all VOICE CAT3550(config-cmap)# match ip dscp 46 ! DSCP EF (voice) CAT3550(config-cmap)#class-map match-any CALL SIGNALING ! Need ‘match-any’ here CAT3550(config-cmap)# match ip dscp 26 ! DSCP AF31 (old Call-Signaling) CAT3550(config-cmap)# match ip dscp 24 ! DSCP CS3 (new Call-Signaling) CAT3550(config-cmap)#class-map match-all PC-VIDEO CAT3550(config-cmap)# match access-group name PC-VIDEO CAT3550(config-cmap)#class-map match-all MISSION-CRITICAL-DATA CAT3550(config-cmap)# match access-group name MISSION-CRITICAL-DATA CAT3550(config-cmap)#class-map match-all TRANSACTIONAL-DATA CAT3550(config-cmap)# match access-group name TRANSACTIONAL-DATA CAT3550(config-cmap)#class-map match-all BULK-DATA CAT3550(config-cmap)# match access-group name BULK-DATA CAT3550(config-cmap)#class-map match-all ANY CAT3550(config-cmap)# match access-group name ANY ! Workaround ACL CAT3550(config-cmap)# CAT3550(config-cmap)#class-map match-all VVLAN-VOICE CAT3550(config-cmap)# match vlan 110 ! VLAN 110 is VVLAN CAT3550(config-cmap)# match class-map VOICE ! Matches VVLAN DSCP EF CAT3550(config-cmap)#class-map match-all VVLAN-CALL-SIGNALING CAT3550(config-cmap)# match vlan 110 ! VLAN 110 is VVLAN CAT3550(config-cmap)# match class-map CALL SIGNALING ! Matches VVLAN AF31/CS3 CAT3550(config-cmap)#class-map match-all VVLAN-ANY CAT3550(config-cmap)# match vlan 110 ! VLAN 110 is VVLAN CAT3550(config-cmap)# match class-map ANY ! Matches any other VVLAN traffic CAT3550(config-cmap)# CAT3550(config-cmap)# CAT3550(config-cmap)#class-map match-all DVLAN-PC-VIDEO CAT3550(config-cmap)# match vlan 10 ! VLAN 10 is DVLAN CAT3550(config-cmap)# match class-map PC-VIDEO ! Matches PC IP/VC or SoftPhone CAT3550(config-cmap)# CAT3550(config-cmap)#class-map match-all DVLAN-MISSION-CRITICAL-DATA CAT3550(config-cmap)# match vlan 10 ! VLAN 10 is DVLAN CAT3550(config-cmap)# match class-map MISSION-CRITICAL-DATA CAT3550(config-cmap)# CAT3550(config-cmap)#class-map match-all DVLAN-TRANSACTIONAL-DATA CAT3550(config-cmap)# match vlan 10 ! VLAN 10 is DVLAN CAT3550(config-cmap)# match class-map TRANSACTIONAL-DATA CAT3550(config-cmap)# CAT3550(config-cmap)#class-map match-all DVLAN-BULK-DATA CAT3550(config-cmap)# match vlan 10 ! VLAN 10 is DVLAN CAT3550(config-cmap)# match class-map BULK-DATA CAT3550(config-cmap)# CAT3550(config-cmap)#class-map match-all DVLAN-ANY CAT3550(config-cmap)# match vlan 10 ! VLAN 10 is DVLAN CAT3550(config-cmap)# match class-map ANY ! Matches all other DVLAN traffic CAT3550(config-cmap)# CAT3550(config-cmap)# CAT3550(config-cmap)#policy-map IPPHONE+PC-ADVANCED Enterprise QoS Solution Reference Network Design Guide 2-39
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