CHAPTER 11 3 Random Early Detection RED; Cisco 10000 p.11-2 p.11-3 ID p.11-6 p.11-7 p.11-8 RED p.11-9 WRED p.11-11 3 p.11-21 3 p.11-22 3 p.11-24 3 p.11-33 2 p.11-40 p.11-41 Cisco 10000 QoS 11-1
11 2 2 32,000 Virtual Circuit VC; 64,000 Cisco IOS Release 12.3(7)XI1 128,000 Cisco IOS Release 12.3(7)XI2 32,000 Assured Forwarding AF; Expedited Forwarding EF; Best Effort BE 3 4 11-1 11-1 1 PRE3 Release 12.2(31)SB2 PRE2 Release 12.3(7)XI PRE2 Release 12.2(16)BX PRE1 256,000 131,070 65,534 32,766 15 32 2 4 5 1. 32 16 3 2. 29 1 1 1 3. 14 1 1 4. 131,070 32 32 4,194,304 131,070 5. PRE3 4,194,304 4,194,304 1,048,576 11-2 Cisco 10000 QoS
11 11-2 11-2 Cisco IOS PRE1 32 16,384 PRE2 PRE2 2 2 Cisco IOS Release 12.2(15)BX 32 16,384 Release 12.2(16)BX 2 Cisco IOS Release 12.3(7)XI 500 MB 8 4096 2 500 MB 128 64,000 PRE3 PRE4 2 Cisco IOS Release 12.2(31)SB2 16 32,767 queue-limit 500 Mbps PRE1 1 Gbps PRE2 PRE3 WRED WRED 2 2 Cisco IOS Release 12.2(15)BX Release 12.2(16)BX 2 Cisco 10000 QoS 11-3
11 WRED 256 50 32 PRE2 16 PRE3 WRED 80 25 32 PRE2 16 PRE3 4,194,304 [p.11-3] RED 2 show policy-map interface Cisco IOS Release 12.0(25)SX Release 12.3(7)XI RED queue-limit queue-limit p.11-4red p.11-9 WRED p.11-19 Cisco IOS Release 12.0(25)SX Release 12.3(7)XI RED IP precedence Differentiated Services Code Point DSCP RED 131,070 32 / 4,194,304 131,070 = 32 131,070 3 p.11-22 p.11-20 queue-limit queue-limit no queue-limit number-of-packets no queue-limit number-of-packets 11-4 Cisco 10000 QoS
11 number-of-packets PRE1 number-of-packets 32 16,384 2 2 2 PRE 2 Cisco IOS Release 12.2(15)BX Release 12.2(16)BX number-of-packets 32 16,384 2 PRE 2 Cisco IOS Release 12.3(7)XI 500 MB number-of-packets 8 4096 2 500 MB number-of-packets 128 64,000 2 2 2 PRE3 Cisco IOS Release 12.2(31)BX number-of-packets 1 32,767 2 queue-limit Cisco IOS Release 12.0(17)SL Release 12.0(25)SX Release 12.2(16)BX Release 12.3(7)XI Release 12.2(28)SB Release 12.2(31)SB2 queue-limit PRE1 queue-limit random-detect PRE2 PRE2 queue-limit random-detect PRE2 Cisco IOS Release 12.2(28)SB PRE3 queue-limit WRED queue-limit WRED WRED 2 2 PRE2 Cisco IOS Release 12.2(15)BX Release 12.2(16)BX PRE3 Cisco IOS Release 12.2(31)SB2 2 WRED 256 50 32 Cisco 10000 QoS 11-5
ID 11 queue-limit bandwidth 131,070 queue-limit bandwidth p.11-4 Cisco IOS Release 12.2(16)BX 2 2 ID Queue ID QID QID 11-3 1 2 QID 11-3 QID QID PRE1 500 Mbps 1 32,766 500 Mbps 2 PRE2 622 Mbps 1 130,816 622 Mbps 2 254 1 PRE3 2 1 256,000 1. QID 0 QID 1 QID 256 254 2. PRE3 PRE2 OC-48 1 PRE1 QID PRE2 QID out of resource 1 QID show ha pxf cpu queue summary 11-6 Cisco 10000 QoS
11 Cisco 10000 ATM p.11-7 p.11-7 VLAN p.11-8 ATM Asynchronous Transfer Mode ATM; Cisco 10000 Unspecified Bit Rate UBR; Permanent Virtual Circuit PVC; 1 Variable Bit Rate VBR; PVC Peak Cell Rate PCR; UBR PVC 1 VBR PCR UBR PVC 1 1 UBR PVC VBR PVC UBR PVC VBR PVC UBR PVC PVC Cisco 10000 2 PVC PVC PVC PVC PVC PVC PVC PVC PVC 13 QoS QoS CLI PVC A QoS Cisco 10000 QoS 11-7
11 VLAN Cisco 10000 VLAN LAN VLAN VLAN 13 QoS 3 Class of Service CoS; Cisco IOS PRE Release 12.0(17)SL PRE1 Release 12.2(16)BX PRE2 PRE2 Release 12.2(28)SB PRE2 Cisco IOS Release 12.2(28)SB PRE2 Release 12.2(31)SB2 PRE3 PRE2 PRE3 RED Cisco 10000 1 RED RED RED RED RED p.11-9 WRED p.11-11 11-8 Cisco 10000 QoS
11 RED RED RED 3 1 RED RED TCP RED RED 1 IP precedence RED IP precedence RED 0 7 0 7 IP precedence RED TCP DSCP RED DSCP RED RED DSCP PRE1 DSCP RED 1 3 AF 4 AF RED Cisco IOS PRE Release 12.0(17)SL RED PRE1 Release 12.0(22)S DSCP RED PRE1 Release 12.0(25)SX random-detect PRE1 queue-limit Release 12.2(16)BX PRE2 PRE2 Release 12.2(28)SB PRE2 Cisco IOS Release 12.2(28)SB PRE2 Release 12.2(31)SB2 PRE3 PRE3 RED RED RED RED Cisco IOS Release 12.0(25)SX Cisco IOS Release 12.0(25)SX random-detect queue-limit Cisco 10000 QoS 11-9
RED 11 RED 3 RED RED RED RED 512 512 1 RED 11-1 RED 11-1 RED 100% 126557 RED RED RED RED RED 11-10 Cisco 10000 QoS
11 WRED WRED WRED 3 1 WRED RED IP precedence DSCP WRED WRED 3 WRED WRED 3 WRED WRED 1 IP precedence WRED IP precedence WRED 0 7 0 7 IP precedence WRED TCP IP precedence WRED Multiprotocol Label Switching MPLS; IP 3 IP precedence MPLS 3 Experimental EXP MPLS DSCP WRED DSCP WRED WRED DSCP WRED WRED 0 7 Per-Hop Behavior PHB WRED ATM Cell Loss Priority CLP; WRED CLP WRED 0 1 CLP ATM 2 VPN ATM ATM CLP WRED IP precedence DSCPWRED RED PRE2 RED PRE3 RED WRED Cisco IOS PRE Release 12.0(17)SL WRED PRE1 Release 12.0(22)S DSCP WRED PRE1 Cisco 10000 QoS 11-11
WRED 11 Cisco IOS PRE Release 12.0(25)SX random-detect PRE1 queue-limit Release 12.2(16)BX PRE2 RED PRE2 Release 12.3(7)XI PRE2 PRE2 1 4 8 1 random-detect queue-limit WRED Release 12.2(28)SB Release 12.2(31)SB2 Release 12.2(33)SB IP precedence DSCP WRED PRE2 Cisco IOS Release 12.2(28)SB PRE2 PRE3 RED PRE3 PRE3 DiffServ PRE3 PRE4 ATM CLP PRE3 PRE4 WRED WRED WRED WRED 1 WRED WRED IP precedence QoS Quality of Service WRED WRED WRED IP precedence DSCP 0 0 IP precedence WRED IP precedence WRED IP precedence 0 IP precedence 7 WRED WRED TCP/IP TCP/IP WRED 11-12 Cisco 10000 QoS
11 WRED WRED TCP TCP/IP WRED WRED WRED WRED WRED WRED DSCP IP precedence ATM CLP WRED 11-4 WRED WRED IP precedence 11-4 WRED random-detect dscp-based min-thresh-value max-thresh-value mark-probability-denominator-value random-detect prec-based min-thresh-value max-thresh-value mark-probability-denominator-value random-detect discard-class-based min-thresh-value max-thresh-value mark-probability-denominator-value DSCP PRE2 PRE3 PRE4 IP precedence PRE2 PRE3 PRE4 PRE2 PRE3 PRE4 min-thresh-value PRE3 random-detect atm-clp-based min-thresh-value max-thresh-value mark-probability-denominator-value ATM CLP PRE2 PRE3 PRE4 WRED DSCP IP precedence 1 16,384 PRE3 random detect discard-class WRED DSCP IP precedence min-threshold 1 Cisco 10000 QoS 11-13
WRED 11 512 512 1 1 65,535 10 PRE random-detect WRED p.11-14 WRED p.11-16 WRED WRED WRED DSCP IP precedence ATM CLP 11-5 PRE PRE2 random-detect PRE3 PRE4 random-detect random-detect basis random-detect dscp-based aggregate random-detect discard-class-based random-detect atm-clp-based PRE3 PRE4 WRED IP precedence 11-5 WRED random-detect dscp dscp-value min-thresh-value max-thresh-value mark-probability-denominator-value DSCP 0 63 PRE3 PRE4 random-detect dscp values sub-class-val1 [...[sub-class-val8]] minimum-thresh min-thresh-value maximum-thresh max-thresh-value mark-prob mark-prob-value random-detect ip precedence precedence-value min-thresh-value max-thresh-value mark-probability-denominator-value PRE3 PRE4 random-detect precedence values sub-class-val1 [...[sub-class-val8]] minimum-thresh min-thresh-value maximum-thresh max-thresh-value mark-prob mark-prob-value IP precedence 0 7 0 7 11-14 Cisco 10000 QoS
11 WRED 11-5 WRED random-detect discard-class discard-class-value min-thresh-value max-thresh-value mark-probability-denominator-value 0 7 PRE3 PRE4 random-detect discard-class discard-class-value min-thresh-value max-thresh-value mark-probability-denominator-value random-detect atm-clp clp-value min-thresh-value max-thresh-value mark-probability-denominator-value ATM CLP 0 1 PRE3 PRE4 random-detect atm-clp clp-value min-thresh-value max-thresh-value mark-probability-denominator-value PRE3 WRED 32,000 PRE3 21 WRED 16 16 class-default net-control 2 net-control PRE3 12 1 class-default 32,000 64,000 PRE3 WRED 21 32,000 PRE3 21 WRED 16 16 class-default net-control 2 net-control 12 class-default 1 11-6 PRE WRED 11-6 WRED WRED PRE PRE1 4 1 PRE2 8 2 PRE3 21 16 3 32,000 21 32,000 64,000 1. 2. 1 3. class-default net-control 2 Cisco 10000 QoS 11-15
WRED 11 WRED WRED PRE3 PRE4 random-detect DSCP 1 / 1 PRE3 PRE4 random-detect PRE2 DSCP IP precedence 1 DSCP IP precedence 1 1 WRED 1 DSCP IP precedence PRE3 PRE4 andom-detect random-detect aggregate [minimum-thresh min-thresh-value maximum-thresh max-thresh-value mark-prob mark-prob-value] random-detect {precedence-based dscp-based} aggregate [minimum-thresh min-thresh-value maximum-thresh max-thresh-value mark-prob mark-prob-value] random-detect {precedence dscp} values [sub-class-val1 [...sub-class-val8] [minimum-thresh min-thresh-value maximum-thresh max-thresh-value mark-prob mark-prob-value]] random-detect PRE3 PRE4 random-detect {precedence-based dscp-based} PRE3 PRE4 CLP PRE2 random-detect {discard-class-based atm-clp-based} random-detect {discard-class discard-class-value clp clp-value} [min-thresh-value] [max-thresh-value] [mark-probability-denominator-value] WRED DSCP DSCP 1 DSCP 2 DSCP random-detect dscp values [dscp-val1 [...dscp-val8] [minimum-thresh min-thresh-value maximum-thresh max-thresh-value mark-prob mark-prob-value] DSCP DSCP 1 random-detect 1 WRED 1 random-detect 11-16 Cisco 10000 QoS
11 WRED PRE3 PRE4 random-detect random-detect {precedence-based dscp-based} aggregate [minimum-thresh min-thresh-value maximum-thresh max-thresh-value mark-prob mark-prob-value] random-detect PRE3 PRE4 random-detect {precedence-based dscp-based} PRE3 PRE4 ATM CLP PRE2 random-detect discard-class-based random-detect discard-class discard-class-value min-thresh-value max-thresh-value mark-probability-denominator-value random-detect atm-clp-based random-detect clp clp-value min-thresh-value max-thresh-value mark-probability-denominator-value random-detect WRED IP precedence random-detect bandwidth random-detect max-threshold queue-limit max-threshold max-threshold WRED max-threshold max-threshold WRED exponential-weight-constant =1 2 n+ 2 n n MPLS WRED MPLS EXP random-detect dscp random-detect dscp-based random-detect dscp dscp-based WRED DSCP IP Type of Service ToS; 6 Cisco 10000 QoS 11-17
WRED 11 random-detect ip precedence random-detect prec-based random-detect ip precedence prec-based WRED IP precedence mark-probability-denominator 10 max-threshold WRED random-detect discard-class random-detect discard-class-based random-detect discard-class discard-class-based WRED random-detect WRED DSCP IP precedence atm-clp 1 16,384 WRED DSCP IP precedence atm-clp 16,384 11-7 DSCP IP precedence WRED 3 = 11/32 = 1/2 10 1 11-7 PRE2 PRE3 WRED DSCP precedence 11-18 Cisco 10000 QoS
11 WRED 11-7 WRED DSCP DSCP 1/4 1/2 1/10 0 1/4 1/2 1/10 1 9/32 1/2 1/10 2 5/16 1/2 1/10 3 11/32 1/2 1/10 4 3/8 1/2 1/10 5 13/32 1/2 1/10 6 7/16 1/2 1/10 7 15/32 1/2 1/10 WRED p.11-10 WRED WRED queue-limit WRED WRED Cisco IOS Release 12.3(7)XI Cisco IOS Release 12.3(7)XI random-detect queue-limit 2 2 random-detect max-threshold queue-limit max-threshold max-threshold WRED max-threshold max-threshold WRED Cisco 10000 QoS 11-19
WRED 11 =1 2 n+ 2 n n 9 1 16 WRED WRED WRED WRED WRED 11-20 Cisco 10000 QoS
11 3 3 queue-limit random-detect RED WRED queue-limit random-detect Multilink PPP MLP; PPP ATM PCR UBR PVC * ATM Constant Bit Rate CBR; PVC * ATM VBR PVC * Label-Controlled ATM LC-ATM; ATM ** PVC ** VLAN ** * PRE3 ATM PVC MQC ATM queue-limit random-detect ** 13 QoS queue-limit random-detect queue-limit random-detect ATM PCR UBR PVC IP VAI QoS [p.4-26] queue-limit random-detect Cisco 10000 QoS 11-21
3 11 3 ATM UBR PVC UBR PVC PCR bandwidth bandwidth remaining (PRE2) bandwidth remaining ratio (PRE3) bandwidth remaining percent (PRE3) priority shape Cisco IOS Release 12.0(25)SX Release 12.3(7)XI queue-limit random-detect 1,048,576 PRE1 4,194,304 PRE2 [out of resources] queue-limit show pxf cpu queue summary CSCed81996 Cisco IOS Release 12.2(33)SB show pxf cpu queue interface summary -Traceback= 604D58EC 604C00C0 604C0288 604C43C4 604C43E4 604C254C 604C260C 604C478C 60D4B868 603AC304 6013B410 603C6270 604569C0 604569A4! Router# config terminal Enter configuration commands, one per line.end with CNTL/Z. Router(config)# policy-map qos_pq_cbwfq_0 Router(config-pmap)# class dscp_10 Router(config-pmap-c)# queue-limit 32 Queue limit failed on ATM2/0/0.2484 VC 2484 (out of resources) Queue limit failed on ATM2/0/0.2485 VC 2485 (out of resources) Queue limit failed on ATM2/0/0.2486 VC 2486 (out of resources) Queue limit failed on ATM2/0/0.2487 VC 2487 (out of resources) Queue limit failed on ATM2/0/0.2488 VC 2488 (out of resources) Queue limit failed on ATM2/0/0.2489 VC 2489 (out of resources)!! Queue limit failed on ATM3/0/0.1547 VC 1547 (out of resources) Queue limit failed on ATM3/0/0.1548 VC 1548 (out of resources)!! -Traceback= 604D58EC 604C00C0 604C0288 604C43C4 604C43E4 604C254C 604C260C 604C478C 60D4B868 603AC304 6013B410 603C6270 604569C0 604569A4 -Traceback= 6049CA48 6049CCA4 60489224 60493688 604BFA4C 604C3EEC 604C3EE4 604C2554 604C260C 604C478C 60D4B868 603AC304 6013B410 603C6270 604569C0 604569A4 11-22 Cisco 10000 QoS
11 3 RED WRED bandwidth bandwidth remaining shape RED MPLS DSCP WRED IP random-detect dscp-based random-detect prec-based random-detect discard-class-based WRED bandwidth DSCP WRED 1 3 AF 4 AF PRE1 4 AF PRE2 PRE3 WRED WRED DSCP precedence discard-class Bronze WRED WRED DSCP class-map Bronze match ip dscp 1 2 3 policy-map Business class Bronze random-detect dscp 1 100 200 1 random-detect dscp default 200 400 1 PRE2 DSCP WRED 1 8 64 0 63 DSCP 8 DSCP WRED PRE1 DSCP WRED 1 4 64 DSCP 4 4 PRE1 DSCP WRED IP precedence WRED Cisco 10000 QoS 11-23
3 11 3 p.11-24 DSCP p.11-26 IP precedence p.11-28 p.11-30 ATM CLP p.11-31 1 Router(config)# policy-map policy-map-name policy-map-name 2 Router(config-pmap)# class class-map-name 3 Router(config-pmap-c)# bandwidth {bandwidth-kbps percent percent} class-map-name QoS kbps 2 11-24 Cisco 10000 QoS
11 3 4 Router# queue-limit number-of-packets PRE1 number-of-packets 32 16,384 2 2 2 PRE2 Cisco IOS Release 12.2(15)BX Release 12.2(16)BX number-of-packets 32 16,384 2 PRE2 Cisco IOS Release 12.3(7)XI 500 MB number-of-packets 8 4,096 2 500 MB number-of-packets 128 64,000 2 PRE3 number-of-packets 1 32,767 2 number-of-packets p.11-25 WRED queue-limit WRED WRED 2 2 Cisco IOS Release 12.2(15)BX Release 12.2(16)BX 2 WRED 256 50 32 11-1 Class1 Class2 2 Policy1 Class1 Class1 32 Class2 PVC 1/32 Policy1 QoS Cisco 10000 QoS 11-25
3 11 11-1 Router(config)# policy-map Policy1 Router(config-pmap)# class Class1 Router(config-pmap-c)# bandwidth 3000 Router(config-pmap-c)# queue-limit 32 Router(config-pmap-c)# exit Router(config-pmap)# class Class2 Router(config-pmap-c)# bandwidth 2000 Router(config-pmap-c)# exit Router(config)# interface atm 1/0/0 Router(config-if)# atm pxf queuing Router(config-if)# interface atm 1/0/0.1 point-to-point Router(config-subif)# pvc 1/32 Router(config-subif-atm-vc)# ubr 10000 Router(config-subif-atm-vc)# service-policy output Policy1 DSCP DSCP WRED 1 Router(config-if)# class-map class-map-name class-map-name 2 Router(config-cmap)# match match-criterion match-criterion match p.2-6 3 Router(config-cmap)# exit 4 Router(config)# policy-map policy-map-name 1 policy-map-name 5 Router(config-pmap)# class class-map-name QoS class-map-name 1 11-26 Cisco 10000 QoS
11 3 6 7 PRE2 Router(config-pmap-c)# random-detect dscp-based PRE3 Router(config-pmap-c)# random-detect dscp-based aggregate [minimum-thresh min-thresh maximum-thresh max-thresh mark-prob mark-prob] PRE2 Router(config-pmap-c)# random-detect dscp dscp-value min-thresh-value max-thresh-value mark-probability-denominator-value PRE3 Router(config-pmap-c)# random-detect dscp values sub-class-val1 [...[sub-class-val8]] minimum-thresh min-thresh maximum-thresh max-thresh mark-prob mark-prob WRED DSCP min-thresh 1 16,384 max-thresh 16,384 mark-prob 1 65,535 10 WRED DSCP dscp-value sub-class-val DSCP 0 63 ef af11 af12 af13 af21 af22 af23 af31 af32 af33 af41 af42 af43 cs1 cs2 cs3 cs4 cs5 cs7 min-threshold 1 16,384 max-thresh 16,384 mark-probability-denominator-value PRE2 mark-prob PRE3 1 65,535 10 8 Router(config-pmap-c)# exit 9 Router(config-pmap)# exit 10 11 Router(config)# interface type slot/module/port.subinterface-number Router(config-if)# service-policy output policy-map-name VC VC policy-map-name 4 Cisco 10000 QoS 11-27
3 11 DSCP WRED 11-2 Gold Business WRED Gold 24 40 DSCP 8 Business atm 1/0/0 11-2 DSCP WRED Router(config-if)# class-map Gold Router(config-cmap)# match access-group 101 Router(config-cmap)# exit Router(config)# policy-map Business Router(config-pmap)# class Gold Router(config-pmap-c)# bandwidth 48 Router(config-pmap-c)# random-detect dscp-based Router(config-pmap-c)# random-detect dscp 8 24 40 Router(config-pmap-c)# exit Router(config-pmap)# exit Router(config)# interface atm 1/0/0 Router(config-if)# service-policy output Business IP precedence IP precedence 1 Router(config)# policy-map policy-map-name policy-map-name 2 Router(config-pmap)# class class-map-name 3 PRE2 Router(config-pmap-c)# random-detect precedence-based PRE3 Router(config-pmap-c)# random-detect precedence-based aggregate [minimum-thresh min-thresh maximum-thresh max-thresh mark-prob mark-prob] class-map-name QoS WRED IP precedence min-thresh 1 16,384 max-thresh 16,384 mark-prob 1 65,535 10 11-28 Cisco 10000 QoS
11 3 4 Router(config-pmap-c)# random-detect precedence prec-value min-thresh-value max-thresh-value mark-probability-denominator-value PRE3 Router(config-pmap-c)# random-detect precedence values sub-class-val1 [...[sub-class-val8]] minimum-thresh min-thresh maximum-thresh max-thresh mark-prob mark-prob WRED IP precedence prec-value PRE2 valuessub-class-val PRE3 IP precedence 0 7 min-thresh 1 16,384 max-thresh 16,384 mark-probability-denominator-value PRE2 mark-prob PRE3 1 65,535 10 IP precedence 11-3 IP precedence WRED Class1 IP precedence 3 4 5 IP precedence 3 4 5 Policy1 Class1 Class1 IP precedence 3 WRED 500 1500 200 QoS atm 1/0/0.1 PVC 1/32 11-3 IP precedence WRED Router(config)# class-map Class1 Router(config-cmap)# match ip precedence 3 4 5 Router(config-cmap)# exit Router(config)# policy-map Policy1 Router(config-pmap)# class Class1 Router(config-pmap-c)# bandwidth 1000 Router(config-pmap-c)# random-detect prec-based Router(config-pmap-c)# random-detect precedence 3 500 1500 200 Router(config-pmap-c)# exit Router(config-pmap)# exit Router(config)# interface atm 1/0/0 Router(config-if)# atm pxf queuing Router(config-if)# interface atm 1/0/0.1 point-to-point Router(config-subif)# pvc 1/32 Router(config-subif-atm-vc)# ubr 10000 Router(config-subif-atm-vc)# service-policy output policy1 Cisco 10000 QoS 11-29
3 11 Cisco IOS Release 12.3(7)XI PRE2 Cisco IOS Release 12.2(31)SB2 PRE3 1 Router(config)# policy-map policy-map-name policy-map-name 2 Router(config-pmap)# class class-map-name 3 4 PRE2, PRE3 Router(config-pmap-c)# random-detect discard-class-based PRE2, PRE3 Router(config-pmap-c)# random-detect discard-class discard-class-value min-thresh-value max-thresh-value mark-probability-denominator-value class-map-name QoS WRED WRED discard-class-value 0 7 min-thresh-value 1 16,384 max-thresh-value 16,384 mark-probability-denominator-value 1 65,535 10 11-30 Cisco 10000 QoS
11 3 11-4 WRED Silver 3 5 3 5 Premium Silver Silver 5 WRED 500 1500 200 QoS atm 2/0/0.2 PVC 1/81 11-4 WRED Router(config)# class-map Silver Router(config-cmap)# match discard-class 3 5 Router(config-cmap)# exit Router(config)# policy-map Premium Router(config-pmap)# class Silver Router(config-pmap-c)# bandwidth percent 30 Router(config-pmap-c)# random-detect discard-class-based Router(config-pmap-c)# random-detect discard-class 5 500 1500 200 Router(config-pmap-c)# exit Router(config-pmap)# exit Router(config)# interface atm 2/0/0 Router(config-if)# atm pxf queuing Router(config-if)# interface atm 2/0/0.2 point-to-point Router(config-subif)# pvc 1/81 Router(config-subif-atm-vc)# ubr 10000 Router(config-subif-atm-vc)# service-policy output Premium ATM CLP ATM CLP CLP PRE3 Cisco IOS Release 12.2(33)SB 1 Router(config)# policy-map policy-map-name policy-map-name 2 Router(config-pmap)# class class-map-name 3 Router(config-pmap-c)# random-detect atm-clp-based class-map-name QoS WRED CLP Cisco 10000 QoS 11-31
3 11 4 Router(config-pmap-c)# random-detect clp [clp-value] [min-thresh-value] [max-thresh-value] [mark-probability-denominator-value] WRED CLP clp-value CLP 0 1 min-thresh-value 1 16,384 max-thresh-value 16,384 mark-probability-denominator-value 1 65,535 10 CLP 11-5 ATP CLP WRED CLP 1 class1 policymap1 class1 ATP CLP WRED 12 25 CLP 1 WRED WRED 10 11-5 CLP WRED Router(config)# class-map class1 Router(config-cmap)# match clp 1 Router(config-cmap)# exit Router(config)# policy-map policymap1 Router(config-pmap)# class class1 Router(config-pmap-c)# random-detect atm-clp-based Router(config-pmap-c)# random-detect clp 1 12 25 10 Router(config-pmap-c)# exit Router(config-pmap)# exit 11-32 Cisco 10000 QoS
11 3 3 Cisco IOS Release 12.0(25)SX Release 12.3(7)XI IP precedence Cisco IOS Release 12.0(25)SX Release 12.3(7)XI IP precedence DSCP WRED precedence EXEC Router# show interface type slot/module/port.subinterface Router# show policy-map policy-map-name Cisco IOS Release 12.3(7)XI IP precedence DSCP WRED Router# show policy-map interface Router# show pxf cpu queue interface Cisco IOS Release 12.3(7)XI VC EXEC Router# show pxf cpu queue interface 2 wq_len wq_limit_drop packet xmit byte xmit Cisco 10000 QoS 11-33
3 11 Router# show pxf cpu queue interface summary QID Cisco IOS Release 12.2(33)SB PRE3 PRE4 Router# show pxf cpu schedule show pxf PRE1 show hardware pxf 11-6 show policy-map interface serial 1/0/0 3 Traffic-5-PR Voice-5-PR 32 0 Gold-5-PR 0 Silver-5-PR 64 0 11-6 Router# show policy-map interface serial 1/0/0 Serial1/0/0 Service-policy output: Traffic-Parent (1051) Class-map: class-default (match-any) (1068/0) 2064335 packets, 120273127 bytes 5 minute offered rate 1000 bps, drop rate 0 bps Match: any (1069) 126970 packets, 3982597 bytes 5 minute rate 0 bps Shape : 6000 kbps Service-policy : Traffic-5-PR (1052) Class-map: Voice-5-PR (match-all) (1053/1) 82310 packets, 4938600 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: ip precedence 5 (1054) Output queue: 0/32; 82310/4938600 packets/bytes output, 0 drops Absolute priority Queue-limit: 32 packets Police: 304000 bps, 1536 limit, 0 extended limit conformed 82312 packets, 4938720 bytes; action: transmit exceeded 0 packets, 0 bytes; action: drop violated 0 packets, 0 bytes; action: drop 11-34 Cisco 10000 QoS
11 3 Class-map: Gold-5-PR (match-any) (1058/2) 1125476 packets, 67528560 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: ip precedence 3 4 (1059) 1125476 packets, 67528560 bytes 5 minute rate 0 bps Output queue: 0/128; 1125503/67530180 packets/bytes output, 0 drops Bandwidth : 188 kbps (Weight 3) Class-map: Silver-5-PR (match-any) (1061/3) 697908 packets, 41874480 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: ip precedence 0 1 2 (1062) 697908 packets, 41874480 bytes 5 minute rate 0 bps Output queue: 0/64; 697919/41875140 packets/bytes output, 0 drops Bandwidth : 71 kbps (Weight 1) Random-detect (precedence-based): Exponential weight: 9 (1/512) Current average queue length: 0 packets ------------------------------------------------- Min Max Prob Rand-Drops Tail-Drops ------------------------------------------------- 0 16 32 1/10 0 0 1 18 32 1/10 0 0 2 20 32 1/10 0 0 3 22 32 1/10 0 0 4 24 32 1/10 0 0 5 26 32 1/10 0 0 6 28 32 1/10 0 0 7 30 32 1/10 0 0 Queue-limit: 64 packets Class-map: class-default (match-any) (1066/0) 158641 packets, 5931487 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: any (1067) 158641 packets, 5931487 bytes 5 minute rate 0 bps Output queue: 0/128; 31672/1695625 packets/bytes output, 0 drops Cisco 10000 QoS 11-35
3 11 DSCP WRED 11-7 show policy-map interface nyusers DSCP WRED 9 WRED DSCP 8 DSCP 0 11-7 DSCP WRED Router# show policy-map interface GigabitEthernet 3/0/0 GigabitEthernet3/0/0 Service-policy output: manhattan Class-map: nyusers (match-all) 0 packets, 0 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: access-group 101 Output queue: 0/128; 0/0 packets/bytes output, 0 drops Bandwidth : 47 kbps (Weight 0) Random-detect (DSCP-based): Exponential weight: 9 (1/512) Current average queue length: 0 packets ------------------------------------------------------ Diff-Serv Min Max Mark Rand-Drops Tail-Drops codepoint thres thres probability ------------------------------------------------------ 8 24 40 1/50 0 0 Default 64 128 1/10 0 0 Class-map: class-default (match-any) 0 packets, 0 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: any Output queue: 0/4096; 0/0 packets/bytes output, 0 drops 11-8 show class-map show class-map DSCP 0 DSCP 1 2 3 5 DSCP per_dscp_class 11-8 show class-map Router# show class-map per_dscp_class Class Map match-all per_dscp_class (id 11) Match ip dscp default 1 2 3 5 11-9 show policy-map show policy-map per_dscp_class DSCP 1 2 3 5 11-9 show policy-map Router# show policy-map per_dscp_policy Policy Map per_dscp_policy Class per_dscp_class priority random-detect dscp-based random-detect dscp 1 10 20 50 random-detect dscp 2 10 40 20 random-detect dscp 3 100 400 20 random-detect dscp 5 22 60 30 11-36 Cisco 10000 QoS
11 3 IP precedence WRED 11-10 show policy-map interface new-users IP precedence WRED precedence mark probability RED 11-10 IP precedence WRED Router# show policy-map interface FastEthernet 3/0/0 FastEthernet3/0/0 Service-policy output: voice Class-map: new-users (match-all) 0 packets, 0 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: access-group 101 Output queue: 0/128; 0/0 packets/bytes output, 0 drops Bandwidth: 47 kbps (Weight 0) Random-detect (precedence-based): Exponential weight: 9 (1/512) Current average queue length: 0 packets ----------------------------------------------------------------------- TOS MinMaxMark Rand-DropsTail-Drops precedencethresthresprobability ----------------------------------------------------------------------- 0 204840961/10105 1 230440961/1031 2 256040961/1000 3 281640961/1000 4 307240961/1051 5 332840961/1000 6 358440961/1020 7 384040961/1000 Cisco 10000 QoS 11-37
3 11 WRED 11-11 show policy-map interface vlan1 WRED RED 11-11 WRED Router# show policy-map interface GigabitEthernet 1/0/0 GigabitEthernet1/0/0 Service-policy output: bronze Class-map: vlan1 (match-all) 0 packets, 0 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: access-group 101 Output queue: 0/128; 0/0 packets/bytes output, 0 drops Bandwidth: 47 kbps (Weight 0) Random-detect (discard-class-based): Exponential weight: 9 (1/512) Current average queue length: 0 packets --------------------------------------------------------------- DiscardMinMaxMarkRand-DropsTail-Drops classthresthresprobability --------------------------------------------------------------- 0 10 100 1/402 100 1 100 200 1/4015 0 2 256040961/100 0 3 281640961/100 0 4 307240961/100 0 5 332840961/100 0 6 358440961/100 0 7 384040961/100 0 ATM CLP WRED 11-12 show policy-map interface PRE3 Cisco 10000 ATM CLP WRED CLP 1 11-12 ATM CLP WRED PRE3 Router# show policy-map policymap1 Service-policy output: policymap1 Class-map:class1 (match-all) 0 packets, 0 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match:none Queueing Queue limit 50 packets (queue depth/total drops/no-buffer drops) 0/0/0 (pkts output/bytes output) 0/0 bandwidth 20% (00000 kbps) Exp-weight-constant: 9 (1/512) Mean queue depth:0 bytes clp Transmitted Random drop Tail drop Minimum Maximum Mark pkts/bytes pkts/bytes pkts/bytes thresh thresh prob 0 0/0 0/0 0/0 0 0 1/0 1 0/0 0/0 0/0 12 25 1/10 11-38 Cisco 10000 QoS
11 3 11-13 show policy-map PRE2 Cisco 10000 ATM CLP WRED CLP 1 11-13 ATM CLP WRED PRE2 Router# show policy-map policymap1 Service-policy output: policymap1 Class-map:class1 (match-all) 0 packets, 0 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match:none Output queue:0/16384; 0/0 packets/bytes output, 0/0 drops Bandwidth :200000 kbps (Weight 20) Random-detect (clp-based) : Exponential weight: 9 (1/512) Current average queue length:0 packets ------------------------------------------------------------------------- ATM Min Max Mark Rand-Drop Tail-Drop CLP thres thres probability Pkts Bytes Pkts Bytes ---------------------------------------------------------------- 0 4097 8192 1/10 0 0 0 0 1 12 25 1/10 0 0 0 0 Cisco 10000 QoS 11-39
2 11 2 ATM VC 2 ATM ATM VC VC queue-depth VC VC Segmentation and Reassembly SAR; VC VC VC VC VC VC VC SAR VC + 2 15 p.15-28 11-8 ATM VBR UBR VC 11-8 ATM ATM VC VC bps VBR 0 18999 48 56 19000 40999 64 72 41000 99999 128 144 100,000 622,000 224 240 UBR 224 240 VC 66 70 72 15 VC p.15-31 11-40 Cisco 10000 QoS
11 2 2 VC p.15-41 Class-Based WRED CBWRED Cisco IOS Quality of Service Solutions Configuration Guide Release 12.3 DiffServ WRED DSCP WRED Part 2: Congestion Management > Configuring Weighted Fair Queuing > Class-Based Weighted Fair Queuing Configuration Task List > Configuring Class Policy in the Policy Map > Configuring Class Policy Using WRED Packet Drop Part 3: Congestion Avoidance > Congestion Avoidance Overview > About Random Early Detection Part 3: Congestion Avoidance > Configuring Weighted Random Early Detection DiffServ Compliant Weighted Random Early Detection Release 12.1(5)T DiffServ Compliant Weighted Random Early Detection Release 12.1(5)T Implementing Quality of Service Policies with DSCP DSCP-Compliant WRED ATM Traffic Management, Troubleshooting Output Drops with Priority Queuing Low Latency Queuing Release 12.0S IP to ATM Class of Service, Low Latency Queuing Low Latency Queuing Release 12.0T VBR-nrt VC Cisco IOS Quality of Service Solutions Configuration Guide Release 12.2 Part 7: Quality of Service Solutions > IP to ATM Class of Service Overview > IP to ATM CoS Features VBR-nrt VC WRED Cisco IOS Quality of Service Solutions Configuration Guide Release 12.2 Part 7: Quality of Service Solutions > IP to ATM CoS Overview > IP to ATM CoS Features Part 7: Quality of Service Solutions > Configuring IP to ATM CoS > IP to ATM CoS on a Single ATM VC Configuration Task List Part 7: Quality of Service Solutions > Configuring IP to ATM CoS > Per-VC WFQ and CBWFQ Configuration Task List Cisco 10000 QoS 11-41
11 Priority Queuing PQ /ATM PVC CBWFQ RED Cisco IOS Quality of Service Solutions Configuration Guide Release 12.2 Part 2: Congestion Management > Congestion Management Overview > Priority Queuing Part 2: Congestion Management > Configuring Priority Queuing Part 2: Congestion Management > Congestion Management Overview > Weighted Fair Queuing > Class-Based Weighted Fair Queuing Part 2: Congestion Management > Configuring Weighted Fair Queuing > Class-Based Weighted Fair Queuing Configuration Task List Release Notes for the Cisco 10000 Series Internet Router for Cisco IOS Release 12.0(25)SX New Features in Cisco IOS Release 12.0(25)SX > Random Early Detection with Queue-Limit 11-42 Cisco 10000 QoS