CHAPTER 2 QoS Quality of Service QoS; Cisco 10000 QoS QoS QoS p.5-1 Cisco 10000 QoS 2-1
2 QoS QoS 1 16 QoS QoS 1 QoS Class-Based Weighted Fair Queuing CBWFQ QoS Cisco IOS Release 12.0(25)SX 4096 QoS QoS p.2-2 p.2-4 QoS p.2-5 p.2-18 p.2-18 1 Router(config)# class-map [match-any match-all] class-map-name match-any 1 match-all match-all match-any match-all class-map-name 2-2 Cisco 10000 QoS
2 QoS QoS 2 Router(config-class-map)# match match_statement match_statement match_statement p.2-3 2-1 3 2-1 Router(config)# class-map voice-traffic Router(config-cmap)# match ip rtp 16384 16383 Router(config-cmap)# exit Router(config)# class-map data Router(config-cmap)# match ip precedence 1 Router(config-cmap)# exit Router(config)# class-map application Router(config)# match ip precedence 2 2-2 2-2 1 IP precedence 3 7 mink Router(config)# class-map mink Router(config-cmap)# match access-group 1 Router(config-cmap)# match ip precedence 3 7 match_statement match match_statement match_statement match access-group number 1 2699 match access-group name access-list-name access-list-name match any match input-interface interface-name interface-name match ip dscp ip-dscp-value [ip-dscp-value ip-dscp-value ip-dscp-value ip-dscp-value ip-dscp-value ip-dscp-value ip-dscp-value] IP Differentiated Service Code Point DSCP 0 63 1 ip-dscp-value 8 match ip precedence ip-precedence-value [ip-precedence-value ip-precedence-value ip-precedence-value] IP precedence 0 7 1 precedence 8 precedence Cisco 10000 QoS 2-3
QoS 2 QoS match qos-group number QoS 0 99 match ip rtp lowest-udp-port:2000-65535 range:0-16383 UDP 1 Router(config)# policy-map policy-map-name 2 Router(config-pmap)# class class-map-name policy-map-name class-default QoS Cisco 10000 QoS 2-3 lynx mink 2-3 Router(config)# policy-map lynx Router(config-pmap)# class mink Router(config-pmap-c)# 2-4 lynx 2-4 Router(config)# policy-map lynx Router(config-pmap)# class class-default Router(config-pmap-c)# 2-4 Cisco 10000 QoS
2 QoS QoS QoS 2-1 2-1 set atm-clp set ip dscp ip-dscp-value set ip precedence number name Cell Loss Priority CLP; Type of Service ToS; IP DSCP ip-dscp-value IP DSCP 0 63 IP precedence number name set mpls experimental value set qos-group group-id 0 1 2 3 4 5 6 7 MPLS value MPLS 0 7 347 ID police bps [normal-burst max-burst] [conform-action action exceed-action action violate-action action] random detect dscp dscpvalue min-threshold max-threshold [mark-probability-denominator] random detect precedence {precedence rsvp} min-threshold max-threshold mark-probability-denominator queue-limit number-of-packets group-id 0 99 ID 2-2 DSCP IP precedence Weighted Random Early Detection WRED; Cisco IOS Quality of Service Solutions Command Reference bandwidth {interzone total session} {default zone zone-name} bandwidth-size number-of-packets 1 64 Cisco IOS Quality of Service Solutions Command Reference Cisco 10000 QoS 2-5
QoS 2 QoS 2-1 bandwidth {bandwidth-kbps percent percent} priority {bandwidth-kbps percent percentage} [burst] Cisco IOS Quality of Service Solutions Command Reference shape [average peak] mean-rate [[burst-size] [excess-burst-size]] Cisco IOS Quality of Service Solutions Command Reference QoS CAR p.2-6 p.2-7 WRED p.2-8 RED p.2-10 p.2-11 p.2-12 VC p.2-12 3 QoS p.2-14 p.2-16 p.2-16 set p.2-17 CAR Committed Access Rate CAR; 2-2 CAR 2-2 CAR drop set-dscp-transmit new-dscp set-prec-transmit new-prec set-qos-transmit new-qos transmit DSCP 0 63 IP precedence 0 7 QoS 0 99 2-6 Cisco 10000 QoS
2 QoS QoS CAR Router(config-pmap-c)# police bps [normal-burst max-burst] [conform-action action exceed-action action violate-action action] CAR bps 8000 2,000,000,000 / police bps bps bps normal-burst 1000 512,000,000 max-burst 2000 1,024,000,000 conform-action action exceed-action action normal-burst violate-action action max-burst 2-2 2-5 mink CAR 2-5 CAR Router(config)# policy-map lynx Router(config-pmap)# class mink Router(config-pmap-c)# police 720000 90000 90000 conform-action transmit exceed-action drop / ms police police Cisco 10000 QoS 2-7
QoS 2 QoS Router(config-pmap-c)# police {cir] [percent] {bps percent} [normal-burst max-burst] [conform-action {action} exceed-action {action} violate-action {action}] cir Committed Information Rate CIR; percent CIR bps 8000 2,000,000,000 / police bps bps bps percent 1 100 max-burst 1000 512,000,000 max-burst 2000 1,024,000,000 conform-action action exceed-action action normal-burst violate-action max-burst 2-2 2-6 policy1 class1 CIR Peak Information Rate PIR 1 20% CIR 40% PIR 300 ms bc 400 ms be child-policy1 1 1 3/1 2-6 Router(config)# policy-map policy1 Router(config-pmap)# class-map class1 Router(ocnfig-pmap-c)# police cir percent 20 bc 300 ms pir percent 40 be 400 ms Router(config-pmap-c)# service-policy child-policy1 Router(config-pmap-c)# exit Router(config-pmap-c)# interface serial 3/1 Router(config-if)# service-policy output policy1 Percentage-Based Policing and Shaping Release 12.2(13)T WRED WRED WRED IP precedence IP precedence precedence 2-8 Cisco 10000 QoS
2 QoS QoS 1 WRED WRED 2-3 precedence 2-3 precedence precedence 0 7 0 7 min-value 32 16,384 max-value 32 16,384 mark-denom 1 65,535 256 256 1 WRED WRED [p.2-11] OC-12 ATM Variable Bit Rate VBR; PVC WRED Unspecified Bit Rate UBR; PVC WRED WRED Router(config-pmap-c)# random-detect [ewc value prec prec-value min-value max-value mark-denom] WRED ewc value exponential-weight-constant 1 16 WRED WRED random-detect WRED prec 2-3 precedence Cisco 10000 QoS 2-9
QoS 2 QoS 2-7 class-default WRED lynx 2-7 WRED Router(config)# policy-map lynx Router(config-pmap)# class class-default Router(config-pmap-c)# random-detect RED Random Early Detection RED; RED Cisco IOS Release 12.0(25)SX random-detect queue-limit random-detect queue-limit RED RED 1 Router(config)# policy-map policy-map 2 Router(config-pmap)# class class-name 3 Router(config-pmap-c)# random-detect RED 4 Router(config-pmap-c)# queue-limit number-of-packets 2-8 policy1 classa A RED 128 2-8 RED Router(config)# policy-map policy1 Router(config-pmap)# class classa Router(config-pmap-c)# random-detect Router(config-pmap-c)# queue-limit 128 2-10 Cisco 10000 QoS
2 QoS QoS 1 non-empty Router(config-pmap-c)# bandwidth rate-in-kbps rate-in-kbps 8 2,000,000 1 99 2-9 2 IP precedence 1 2 3 4 16 kbps IP precedence 5 6 7 7 40 kbps 64 kbps 2 25 % 62 % IP precedence 0 8kbps 13% 2-9 Router# enable Router# configure terminal Router(config)# class-map city Router(config-cmap)# match ip precedence 1 2 3 4 Router(config-cmap)# class-map boston Router(config-cmap)# match ip precedence 5 6 7 Router(config-cmap)# policy-map precedence-queues Router(config-pmap)# class city Router(config-pmap-c)# bandwidth 16 Router(config-pmap-c)# class boston Router(config-pmap-c)# bandwidth 40 Router(config-pmap-c)# interface serial 6/0/0/1:1 Router(config-if)# service-policy output precedence-queues Router(config-if)# end Cisco 10000 QoS 2-11
QoS 2 QoS Router(config-pmap-c)# priority rate-in-kbps rate-in-kbps 8 2,000,000 1 99 2-10 6/0/0/1:1 2-10 Router# enable Router# configure terminal Router(config)# class-map voice Router(config-cmap)# match ip rtp 2000 2000 Router(config-cmap)# policy-map voice-queue Router(config-pmap)# class voice Router(config-pmap-c)# priority 56 Router(config-pmap-c)# interface serial 6/0/0/1:1 Router(config-if)# service-policy output voice-queue Router(config-if)# VC Virtual Circuit VC; Asynchronous Transfer Mode ATM; IEEE 802.1Q VC VC VC 2-12 Cisco 10000 QoS
2 QoS QoS Cisco IOS Release 12.0(25)SX Cisco 10000 VC VC VC VC VC VC VC Cisco IOS Release 12.0(25)SX VC VC VC 25 % 10 VC 4 VC VC IEEE 802.1Q VC IEEE 802.1Q VC Router(config-if)# service-policy {input output} policy-map-name Router(config-pmap-c)# service-policy policy-map-name QoS VC service-policy VC 2-11 2 PVC T1 1 T1 1536 kbps PVC 1024 kbps 2048 kbps T1 VC VC 768 kbps VC 2-11 PVC Router(config)# policy-map 1m Router(config-pmap)# class class-default Router(config-pmap-c)# shape 1024 Router(config)# frame-relay map-class 1m-pvc Router(config-mc)# service-policy output 1m Router(config)# interface serial 1/0/0/0:0 Router(config-if)# encapsulation frame-relay Router(config-if)# frame-relay interface-dlci 100 Router(config-if-dlci)# frame-relay class 1m-pvc Router(config-if-dlci)# frame-relay interface-dlci 101 Router(config-if-dlci)# frame-relay class 1m-pvc Cisco 10000 QoS 2-13
QoS 2 QoS ATM VC VC ATM VC Router(config-if)# atm over-subscription-factor {1-10} ATM VC 1-10 1 ATM VBR ATM VC VC Sustained Cell Rate SCR; ATM VC service-policy 2-12 ATM 5 2-12 ATM VC Router(config)# interface serial 1 Router(config-if)# atm over-subscription-factor 5 3 QoS 3 QoS Cisco IOS Release 12.0(25)SX QoS 2 3 3 VC 3 Router(config-pmap-c)# service-policy policy-map-name QoS 3 service-policy 2-13 1 Mbps 3 2-14 Cisco 10000 QoS
2 QoS QoS Voice over IP VoIP VoIP 500 Kbps VoIP business 400 Kbps non-saa DSCP 40 400 Kbps business DSCP 40 100 Kbps business 100 Kbps non-saa DSCP 20 100 Kbps class-default DSCP 20 100 Kbps 2-13 3 QoS Router(config)# policy-map business-meter Router(config-pmap)# class non-saa Router(config-pmap-c)# police percent 40 1500 0 conform-action transmit exceed-action set-dscp-transmit 40 Router(config-pmap-c)# exit Router(config-pmap)# exit Router(config)# policy-map default-meter Router(config-pmap)# class non-saa Router(config-pmap-c)# police percent 10 1500 0 conform-action transmit exceed-action set-dscp transmit 20 Router(config-pmap-c)# exit Router(config-pmap)# exit Router(config)# policy-map bi-level Router(config-pmap)# class VoIP Router(config-pmap-c)# priority Router(config-pmap-c)# police percent 50 Router(config-pmap-c)# exit Router(config-pmap)# class business Router(config-pmap-c)# bandwidth percent 40 Router(config-pmap-c)# random-detect dscp-based Router(config-pmap-c)# random-detect dscp 40 10 20 10 Router(config-pmap-c)# random-detect dscp 44 100 200 10 Router(config-pmap-c)# service-policy business-meter Router(config-pmap-c)# exit Router(config-pmap)# class class-default Router(config-pmap-c)# random-detect dscp-based Router(config-pmap-c)# random-detect dscp 20 10 20 10 Router(config-pmap-c)# random-detect dscp 24 100 200 10 Router(config-pmap-c)# service-policy default-meter Router(config-pmap-c)# exit Router(config-pmap)# exit Router(config)# policy-map tri-level Router(config-pmap)# class class-default Router(config-pmap-c)# shape 1000 Router(config-pmap-c)# service-policy bi-level Cisco 10000 QoS 2-15
QoS 2 QoS Cisco 10000 CAR Generic Traffic Shaping GTS Frame Relay Traffic Shaping FRTS QoS p.5-1 GTS Router(config-pmap-c)# shape rate-in-kbps rate-in-kbps rate-in-kbps 56 2,000,000 2-14 100 2-14 GTS Router(config-pmap-c)# shape 100 Router(config-pmap-c)# UBR ATM PVC OC-12 ATM VBR PVC UBR PVC 2-16 Cisco 10000 QoS
2 QoS QoS Router(config-pmap-c)# queue-limit packets packets 32 16,384 2 64 128 256 2 2 60 64 no no queue-limit show interface 2-15 256 2-15 Router(config)# policy-map lynx Router(config-pmap)# class class-default Router(config-pmap-c)# queue-limit 256 set set Router(config-pmap-c)# set {ip {dscp value precedence value} qos-group value atm-clp} jess QoS values ip dscp 0 63 DSCP ip precedence 0 7 0 7 values qos-group QoS ID 0 99 atm-clp ATM CLP PVC ATM Cisco 10000 QoS 2-17
QoS 2 QoS 2-16 IP precedence QoS 2-16 Router(config)# policy-map lynx Router(config-pmap)# class mink Router(config-pmap-c)# set ip precedence 7 Router(config-pmap-c)# set qos-group 8 2-17 myqos qos1 2-17 Router(config)# policy-map myqos Router(config-pmap)# class qos1 Router(config-pmap-c)# set ip dscp 33 Cisco 10000 class-default qos class shape Router(config-pmap-c)# service-policy policy-map-name QoS 2-18 lynx cougar 2-18 Router(config)# policy-map cougar [parent policy] Router(config-pmap)# class class-default Router(config-pmap-c)# shape 1000 Router(config-pmap-c)# service-policy lynx [child policy] QoS p.3-1 2-18 Cisco 10000 QoS
2 QoS p.2-19 p.2-19 p.2-20 2-19 10 IP precedence 1 mink IP precedence 2-19 Router(config)# class-map mink Router(config-cmap)# match access-group 10 Router(config-cmap)# match ip precedence 1 Router(config-cmap)# exit Router(config) 2-20 lynx mink police QoS 2-20 Router(config)# policy-map lynx Router(config-pmap)# class mink Router(config-pmap-c)# police 80000 Router(config-pmap-c)# exit Router(config-pmap)# exit Router(config)# 2-21 3 CBWFQ-PQ voice-traffic data application 2-21 Router(config)# policy-map CBWFQ-PQ Router(config-pmap)# class voice-traffic Router(config-pmap-class)# priority 128 Router(config-pmap-class)# queue-limit 8 Router(config-pmap-class)# exit Router(config-pmap)# class data Router(config-pmap-class)# bandwidth 400 Router(config-pmap-class)# queue-limit 64 Router(config-pmap-class)# exit Router(config-pmap)# class application Router(config-pmap-class)# bandwidth 700 Router(config-pmap-class)# queue-limit 64 Cisco 10000 QoS 2-19
2 QoS 2-22 2 class1 class2 2 shape-2meg-dlci-103 dlci-103 dlci-103 shape-2meg-dlci-103 2-22 Router(config)# class-map match-all class1 Router(config-cmap)# match access-group 1 Router(config-cmap)# exit Router(config)# class-map match-all class2 Router(config-cmap)# match access-group2 Router(config-cmap)# exit Router(config)# policy-map dlci-103 [child policy] Router(config-pmap)# class class1 Router(config-pmap-c)# priority percent 60 Router(config-pmap-c)# exit Router(config-pmap)# class class2 Router(config-pmap-c)# bandwidth percent 30 Router(config-pmap-c)# exit Router(config-pmap)# exit Router(config)# policy-map shape-2meg-dlci-103 [parent policy] Router(config-pmap)# class class-default Router(config-pmap-c)# shape 2000 Router(config-pmap-c)# exit Router(config-pmap)# service-policy dlci-103 [child policy] Router(config-pmap)# exit Router(config)# interface serial 5/0/0.1 point-to-point Router(config-subif)# ip address 1.1.0.2 255.255.255.252 Router(config-subif)# service-policy output shape-2meg-dlci-103 Router(config-subif)# frame-relay interface-dlci 103 2-20 Cisco 10000 QoS