Quality of Service and Bandwidth Management Configuration

Transcription

1 Quality of Service and Bandwidth Management Configuration This topic provides a reference configuration for Quality or Service (QoS) and bandwidth management using RSVP within a Cisco Unified Communications deployment. The information is based primarily on testing performed during Cisco Unified Communications Release 6.1(1) system testing. This topic does not contain detailed step-by-step procedures; instead, for or detailed information about installing, configuring, and administering these functions, refer to the related Cisco documentation listed in Table 1. Related Documentation For related information about QoS and RSVP, see the documents listed in Table 1. Table 1 Cisco QoS and RSVP Documentation Document General Cisco QoS documentation Configuring RSVP Chapter in the Network Protocols Configuration Guide, Part 1 URL technology_support_protocol_home.html nfiguration/guide/1crsvp.html Reference Configuration The system-wide testing of IP telephony functionality for Cisco Unified Communications Release 6.1(1) included Cisco QoS and RSVP. For general information about the tested functionality in Cisco Unified Communications Release 6.1(1), see the System Release Notes for IP Telephony: Cisco Unified Communications System, Release 6.1(1). Network Topologies During Cisco Unified Communications Release 6.1(1) testing, this component was installed and tested in the following site models: SJC-RFD 1

2 Reference Configuration Quality of Service and Bandwidth Management Configuration Load tested in MANB site For more information on these site models, see Tested Deployments and Site Models. Configuration Details This topic includes the following sections: Quality of Service (QoS) Configuration Bandwidth Management Using RSVP Agents Quality of Service (QoS) Configuration Cisco 3845 Router Configuration This section provides sample configuration files that show how Quality of Service (QoS) settings were configured on selected WAN routers during Cisco Unified Communications Release 6.1(1) testing for IP telephony. For the testing, QoS was configured on the following Cisco devices that passed VoIP traffic to and from SCCP, analog, and T1-PRI endpoints: Cisco 7206 router (central site) Cisco 2811 multiservice routers (remote site) Cisco 2821 multiservice routers (remote site) Cisco 2851 multiservice routers (remote site) Cisco 3825 multiservice routers (remote site) Cisco 3845 multiservice routers (remote site) These devices were configured for QoS based on the recommendations in the Enterprise QoS Solution Reference Network Design Guide This document provides design considerations and guidelines for implementing Cisco QoS within an enterprise environment on specific Cisco router types. Most devices tested during Cisco Unified Communications Release 6.1(1) were configured with Cisco AutoQoS. For additional information about AutoQos, see the Quality of Service Commands chapter in the Cisco IOS Quality of Service Solutions Command Reference at html. For general information on QoS on Cisco devices, see This section includes portions of the configuration files for the following devices: Cisco 3845 Router Configuration Cisco 7206 Router Configuration This section shows a portion of the serial interface configuration for the Cisco 3845 router that was used in QoS testing. For additional installation and configuration information, see the Cisco 3845 Multiservice Access Router documentation available at 2

3 Quality of Service and Bandwidth Management Configuration Reference Configuration Sample Configuration at the central site MANB-3845-CEN#sh run Building configuration... Current configuration : 9999 bytes version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption hostname MANB-3845-CEN boot-start-marker boot system flash c3845-ipvoice-mz xw3 boot-end-marker card type e1 0 0 card type e3 1 card type e1 2 1 logging buffered no aaa new-model clock timezone I 5 30 no network-clock-participate slot 2 network-clock-participate wic 0 network-clock-select 1 E1 0/0/0 network-clock-select 2 E1 0/0/1 ip cef no ip dhcp use vrf connected ip dhcp excluded-address ip dhcp excluded-address ip dhcp excluded-address ip dhcp excluded-address ip dhcp pool VoiceNet1_VLAN121 network default-router domain-name gbemea.lab dns-server option 150 ip ip dhcp pool VoiceNet2_VLAN122 network default-router domain-name gbemea.lab dns-server option 150 ip ip dhcp pool DataNet1_vlan21 network default-router domain-name gbemea.lab dns-server option 150 ip no ip domain lookup ip domain name gbemea.lab ip host MANB-CORES vlan ifdescr detail 3

4 Reference Configuration Quality of Service and Bandwidth Management Configuration multilink bundle-name authenticated isdn switch-type primary-4ess voice-card 0 no dspfarm dsp services dspfarm voice-card 2 no dspfarm voice service voip allow-connections h323 to sip allow-connections sip to h323 allow-connections sip to sip sip registrar server expires max 600 min 60 redirect contact order best-match voice class codec 1 codec preference 1 g711alaw codec preference 2 g729r8 voice register pool 1 id mac B36.0AD3 number voice-class codec 1 call-forward b2bua noan timeout 10 voice register pool 2 id mac 001A.A number voice-class codec 1 voice translation-rule 10 rule 1 /^400\(...\)/ /8444\1/ rule 2 /^ \(...\)/ /8444\1/ voice translation-profile test translate called 10 username cisco privilege 15 secret 5 $1$YOPB$PpRSUS71kK/YqD12B1kC61 archive log config hidekeys controller E1 0/0/0 framing NO-CRC4 pri-group timeslots 1-31 service mgcp controller E1 0/0/1 framing NO-CRC4 pri-group timeslots 1-31 service mgcp controller E3 1/0 clock source internal description connected to PE controller E1 2/0 framing NO-CRC4 controller E1 2/1 framing NO-CRC4 4

5 Quality of Service and Bandwidth Management Configuration Reference Configuration class-map match-all BULK-DATA match ip dscp af11 class-map match-all INTERACTIVE-VIDEO match ip dscp af41 af42 af43 class-map match-all NETWORK-CONTROL match ip dscp cs6 match ip dscp cs2 class-map match-all CRITICAL-DATA match ip dscp af31 match ip dscp af21 class-map match-all VOICE match ip dscp ef class-map match-all SCAVENGER match ip dscp cs1 class-map match-any CALL-SIGNALING match ip dscp cs3 policy-map CE-FIVE-CLASS-SP-MODEL class VOICE priority percent 18 class INTERACTIVE-VIDEO priority percent 15 set ip dscp cs5 class CALL-SIGNALING priority percent 5 set ip dscp cs5 class CRITICAL-DATA bandwidth percent 27 random-detect dscp-based class NETWORK-CONTROL bandwidth percent 5 class BULK-DATA bandwidth percent 4 random-detect dscp-based class SCAVENGER bandwidth percent 1 set ip dscp default class class-default fair-queue random-detect interface GigabitEthernet0/0 description connected to the Mgmt Sw 3550 ip address duplex full speed 100 media-type rj45 no keepalive interface GigabitEthernet0/1 description Connected to B F1/16 load-interval 30 duplex auto speed auto media-type rj45 no keepalive interface GigabitEthernet0/1.20 description Connected to VLAN20 CEN SITE encapsulation dot1q 20 ip address

6 Reference Configuration Quality of Service and Bandwidth Management Configuration interface GigabitEthernet0/1.21 description conn to VLAN21 CEN SITE DATA encapsulation dot1q 21 ip address interface GigabitEthernet0/1.121 description Connected to VLAN121 CEN SITE encapsulation dot1q 121 ip address interface GigabitEthernet0/1.122 description Connected to VLAN122 CEN SITE encapsulation dot1q 122 ip address interface GigabitEthernet0/1.221 description connected to VLAN221 CAMELOT encapsulation dot1q 221 ip address interface GigabitEthernet0/1.222 description connected to VLAN222 CAMELOT encapsulation dot1q 222 ip address interface Serial0/0/0:15 encapsulation hdlc isdn switch-type primary-net5 isdn incoming-voice voice isdn bind-l3 ccm-manager no cdp enable interface Serial0/0/1:15 encapsulation hdlc isdn switch-type primary-net5 isdn incoming-voice voice isdn bind-l3 ccm-manager no cdp enable interface Serial1/0 description connected to 7206-PE2 ip address load-interval 30 dsu bandwidth 8192 max-reserved-bandwidth 100 service-policy output CE-FIVE-CLASS-SP-MODEL ip rsvp signalling dscp 24 router eigrp 100 network network network network default-metric

7 Quality of Service and Bandwidth Management Configuration Reference Configuration no auto-summary ip route ip route ip route ip route ip route ip route ip route no ip http server ip http access-class 23 ip http authentication local ip access-list standard cisco snmp-server community cisco RW snmp-server community public RO snmp-server community private RW snmp-server system-shutdown snmp-server enable traps snmp authentication linkdown linkup coldstart warmstart snmp-server enable traps tty control-plane voice-port 0/0/0:15 echo-cancel coverage 24 cptone GB voice-port 0/0/1:15 echo-cancel coverage 24 cptone GB ccm-manager fallback-mgcp ccm-manager mgcp ccm-manager music-on-hold ccm-manager config server ccm-manager config mgcp mgcp call-agent MANB-CORES 2427 service-type mgcp version 0.1 mgcp dtmf-relay voip codec all mode out-of-band mgcp rtp unreachable timeout 1000 action notify mgcp modem passthrough voip mode nse mgcp package-capability rtp-package mgcp package-capability sst-package mgcp package-capability pre-package no mgcp package-capability res-package no mgcp package-capability fxr-package no mgcp timer receive-rtcp mgcp sdp simple mgcp rtp payload-type g726r16 static mgcp profile default sccp local Serial1/0 sccp ccm identifier 1 priority 1 version sccp sccp ccm group 1 bind interface Serial1/0 associate ccm 1 priority 1 associate profile 1 register MANB-3845-CEN associate profile 2 register XMANB-3845-cen 7

8 Reference Configuration Quality of Service and Bandwidth Management Configuration dspfarm profile 2 transcode codec g711ulaw codec g711alaw codec g729ar8 codec g729abr8 codec pass-through rsvp maximum sessions 12 associate application SCCP dspfarm profile 1 conference codec g711ulaw codec g711alaw codec g729ar8 codec g729abr8 codec g729r8 codec g729br8 maximum sessions 2 associate application SCCP dial-peer voice 201 voip description VOIP call over WAN to Rem#1 destination-pattern session protocol sipv2 session target ipv4: dtmf-relay rtp-nte dial-peer voice 202 voip description VOIP call over WAN to Rem#2 destination-pattern session protocol sipv2 session target ipv4: dtmf-relay rtp-nte dial-peer voice 203 voip description VOIP call over WAN to Rem#3 destination-pattern session protocol sipv2 session target ipv4: dtmf-relay rtp-nte dial-peer voice 204 voip description VOIP call over WAN to Rem#4 destination-pattern session protocol sipv2 session target ipv4: dtmf-relay rtp-nte dial-peer voice 200 voip description VOIP call over WAN to Central destination-pattern session protocol sipv2 session target ipv4: dtmf-relay rtp-nte dial-peer voice 150 pots description Local Calls translation-profile incoming test shutdown destination-pattern 9... incoming called-number.t direct-inward-dial port 0/0/0:15 8

9 Quality of Service and Bandwidth Management Configuration Reference Configuration call-manager-fallback max-conferences 4 gain -6 transfer-system full-consult ip source-address port 2000 max-ephones 10 max-dn 10 dual-line transfer-pattern transfer-pattern 9... transfer-pattern keepalive 10 end Sample Configuration at the remote site MANB-2801-REM1#sh run Building configuration... Current configuration : 8050 bytes version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption hostname MANB-2801-REM1 boot-start-marker boot system flash c2801-ipvoice-mz xw3 boot-end-marker logging buffered warnings enable password cisco no aaa new-model ip cef no ip dhcp use vrf connected ip dhcp excluded-address ip dhcp excluded-address ip dhcp pool REM1_Voice1_VLAN251 network dns-server default-router domain-name gbemea.lab option 150 ip ip dhcp pool REM1_Data1_VLAN201 network dns-server domain-name gbemea.lab option 150 ip default-router no ip domain lookup ip domain name gbemea.lab ip host MANB-CORES vlan ifdescr detail multilink bundle-name authenticated voice call send-alert 9

10 Reference Configuration Quality of Service and Bandwidth Management Configuration voice call carrier capacity active voice rtp send-recv voice service voip allow-connections h323 to h323 allow-connections h323 to sip allow-connections sip to h323 allow-connections sip to sip sip registrar server expires max 600 min 60 redirect contact order best-match voice class codec 1 codec preference 1 g711ulaw codec preference 2 g711alaw codec preference 3 g729r8 voice class h323 1 h225 timeout tcp establish 3 voice register pool 1 id mac 000E.D7AB.FEC9 number number voice-class codec 1 voice translation-rule 10 rule 1 /^310\(...\)/ /8447\1/ rule 2 /^ \(...\)/ /8447\1/ voice translation-rule 11 rule 1 /^7\(...\)/ /8447\1/ voice translation-profile 4digittranslation translate called 11 voice translation-profile test translate called 10 voice-card 0 dsp services dspfarm username cisco archive log config hidekeys class-map match-any CRITICAL-DATA match ip dscp cs6 match ip dscp af21 match ip dscp cs2 class-map match-all VOICE match ip dscp ef class-map match-any CALL-SIGNALING match ip dscp cs3 policy-map WAN-EDGE class VOICE priority percent 33 compress header ip rtp class CALL-SIGNALING bandwidth percent 5 set ip dscp cs5 class CRITICAL-DATA 10

11 Quality of Service and Bandwidth Management Configuration Reference Configuration bandwidth percent 35 random-detect dscp-based class class-default fair-queue interface Multilink5 bandwidth 192 ip address ppp multilink ppp multilink interleave ppp multilink group 5 ppp multilink fragment delay 10 h323-gateway voip interface h323-gateway voip bind srcaddr max-reserved-bandwidth 99 service-policy output WAN-EDGE interface FastEthernet0/0 description connected to the Mgmt Sw 3550 ip address duplex auto speed auto interface FastEthernet0/1 description connected to B F0/11 load-interval 30 duplex auto speed auto no keepalive interface FastEthernet0/1.201 description connected to REM1_Data1_VLAN201 encapsulation dot1q 201 ip address interface FastEthernet0/1.251 description connected to REM1_Voice1_VLAN251 encapsulation dot1q 251 ip address interface Serial0/2/0 description connected to 7206-PE3 S1/0 bandwidth 192 encapsulation ppp no fair-queue ppp multilink ppp multilink group 5 max-reserved-bandwidth 99 interface Serial0/2/1 shutdown clock rate router eigrp 101 network network network network default-metric no auto-summary 11

12 Reference Configuration Quality of Service and Bandwidth Management Configuration ip route ip http server ip http access-class 23 ip http authentication local ip http timeout-policy idle 60 life requests ip access-list standard cisco snmp-server community public RO snmp-server community private RW snmp-server system-shutdown snmp-server enable traps snmp authentication linkdown linkup coldstart warmstart snmp-server enable traps tty control-plane voice-port 0/0/0 no battery-reversal cptone GB timing hookflash-out 50 connection plar impedance complex2 description FXO Port Towards Operator Console (CTI RP) voice-port 0/0/1 no echo-cancel enable cptone GB timing hookflash-out 50 connection plar impedance complex2 description FXO Port Towards Operator Console (CTI RP) voice-port 0/0/2 cptone GB timing hookflash-out 50 impedance complex2 voice-port 0/0/3 cptone GB timing hookflash-out 50 impedance complex2 voice-port 0/1/0 voice-port 0/1/1 no mgcp package-capability res-package no mgcp package-capability fxr-package no mgcp timer receive-rtcp sccp local Multilink5 sccp ccm identifier 1 priority 1 version sccp sccp ccm group 1 bind interface Multilink5 associate ccm 1 priority 1 associate profile 2 register XMANB-2801-REM1 associate profile 1 register MANB-2801-REM1 dspfarm profile 2 transcode codec g711ulaw 12

13 Quality of Service and Bandwidth Management Configuration Reference Configuration codec g711alaw codec ilbc codec g723r63 codec g723r53 codec gsmamr-nb codec g729ar8 codec g729abr8 codec pass-through rsvp maximum sessions 10 associate application SCCP dspfarm profile 1 conference codec g711ulaw codec g711alaw codec g729ar8 codec g729abr8 codec g729r8 codec g729br8 maximum sessions 2 associate application SCCP dial-peer cor custom dial-peer voice 202 voip description VOIP call over WAN to Rem#2 destination-pattern session target ipv4: dtmf-relay rtp-nte dial-peer voice 203 voip description VOIP call over WAN to Rem#3 destination-pattern session target ipv4: dtmf-relay rtp-nte dial-peer voice 204 voip description VOIP call over WAN to Rem#4 destination-pattern session target ipv4: dtmf-relay rtp-nte dial-peer voice 205 voip description VOIP call over WAN to Rem#5 destination-pattern session target ipv4: dtmf-relay rtp-nte dial-peer voice 150 pots description Local Calls destination-pattern 9[1-8]... progress_ind setup enable 3 progress_ind alert enable 8 direct-inward-dial port 0/0/1 dial-peer voice 151 voip preference 1 destination-pattern voice-class codec 1 voice-class h323 1 session target ipv4: dtmf-relay h245-alphanumeric 13

14 Reference Configuration Quality of Service and Bandwidth Management Configuration dial-peer voice 152 pots destination-pattern direct-inward-dial port 0/0/1 prefix 0 dial-peer voice voip description VOIP call over WAN to Central preference 2 destination-pattern session target ipv4: dtmf-relay rtp-nte gateway timer receive-rtp 1200 call-manager-fallback max-conferences 4 gain -6 transfer-system full-consult ip source-address port 2000 max-ephones 5 max-dn 10 dual-line transfer-pattern translation-profile incoming 4digittranslation line con 0 login local line aux 0 line vty 0 4 access-class 23 in privilege level 15 login local transport input telnet line vty 5 15 access-class 23 in privilege level 15 login local transport input telnet scheduler allocate end Cisco 7206 Router Configuration This section shows a portion of the configuration file for a Cisco 7206 core router that was used in QoS testing. It demonstrates how to configure auto qos voip trust on the WAN-to-LAN edge using Cisco AutoQoS. For additional installation and configuration information, see the Cisco 7200 series router documentation available at PE3#sh run Building configuration... Current configuration : 6354 bytes version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption hostname 7206-PE3 14

15 Quality of Service and Bandwidth Management Configuration Reference Configuration boot-start-marker boot system disk2:c7200-js-mz boot-end-marker enable secret 5 $1$Jeu/$qUynqtotiLG5thwCYWr220 enable password cisco no aaa new-model resource policy ip cef ip vrf MANB-REM1 rd 1:101 route-target export 1:101 route-target import 1:103 route-target import 1:100 route-target import 1:102 route-target import 1:101 route-target import 1:104 route-target import 1:105 ip vrf MANB-REM3 rd 1:103 route-target export 1:103 route-target import 1:103 route-target import 1:100 route-target import 1:102 route-target import 1:101 route-target import 1:104 route-target import 1:105 mpls label protocol ldp class-map match-all RT match mpls experimental topmost 5 class-map match-all CD match mpls experimental topmost 2 class-map match-all BE match mpls experimental topmost 0 4 class-map match-any REALTIME match ip dscp ef match ip dscp cs5 class-map match-any CRITICAL-DATA match ip dscp cs6 match ip dscp af21 match ip dscp cs2 policy-map PE-P-Out class RT priority percent 60 police cir percent 60 conform-action transmit exceed-action drop class CD bandwidth percent 10 random-detect class class-default fair-queue random-detect policy-map PE-SHORT-PIPE-MARKING-384 class REALTIME police cir

16 Reference Configuration Quality of Service and Bandwidth Management Configuration conform-action set-mpls-exp-topmost-transmit 5 exceed-action drop class CRITICAL-DATA police cir conform-action set-mpls-exp-topmost-transmit 2 exceed-action drop class class-default police cir conform-action set-mpls-exp-topmost-transmit 0 exceed-action set-mpls-exp-topmost-transmit 4 policy-map PE-SHORT-PIPE-MARKING-192 class REALTIME police cir conform-action set-mpls-exp-topmost-transmit 5 exceed-action drop class CRITICAL-DATA police cir conform-action set-mpls-exp-topmost-transmit 2 exceed-action drop class class-default police cir conform-action set-mpls-exp-topmost-transmit 0 exceed-action set-mpls-exp-topmost-transmit 4 policy-map PE-THREE-CLASS-SP-MODEL class REALTIME priority percent 60 class CRITICAL-DATA bandwidth percent 10 random-detect dscp-based class class-default fair-queue random-detect interface Loopback0 ip address interface Multilink1 bandwidth 192 ip vrf forwarding MANB-REM1 ip address ip tcp header-compression iphc-format ppp multilink ppp multilink fragment delay 10 ppp multilink interleave ppp multilink group 1 max-reserved-bandwidth 99 service-policy input PE-SHORT-PIPE-MARKING-192 service-policy output PE-THREE-CLASS-SP-MODEL ip rtp header-compression iphc-format interface Multilink3 description connected to B2821-REM3 bandwidth 384 ip vrf forwarding MANB-REM3 ip address ppp multilink ppp multilink group 3 max-reserved-bandwidth 99 service-policy input PE-SHORT-PIPE-MARKING-384 service-policy output PE-THREE-CLASS-SP-MODEL interface GigabitEthernet0/1 description connected to the Mgmt Sw 3550 ip address

17 Quality of Service and Bandwidth Management Configuration Reference Configuration duplex full speed 100 media-type rj45 no negotiation auto interface GigabitEthernet0/2 description Connected to 7206-P1 Gi0/3 ip address duplex auto speed auto media-type rj45 no negotiation auto mpls ip max-reserved-bandwidth 100 service-policy output PE-P-Out interface GigabitEthernet0/3 shutdown duplex auto speed auto media-type rj45 no negotiation auto interface Serial1/0 description connected to B2801-REM1 bandwidth 192 ip vrf forwarding MANB-REM1 encapsulation ppp load-interval 30 serial restart-delay 0 no dce-terminal-timing-enable no fair-queue ppp multilink ppp multilink group 1 max-reserved-bandwidth 99 interface Serial1/1 description connected to B2821-REM3 bandwidth 384 ip vrf forwarding MANB-REM3 encapsulation ppp load-interval 30 serial restart-delay 0 no dce-terminal-timing-enable no fair-queue ppp multilink ppp multilink group 3 max-reserved-bandwidth 99 interface Serial1/2 shutdown serial restart-delay 0 no dce-terminal-timing-enable interface Serial1/3 shutdown serial restart-delay 0 no dce-terminal-timing-enable 17

18 Reference Configuration Quality of Service and Bandwidth Management Configuration interface Serial1/4 shutdown serial restart-delay 0 no dce-terminal-timing-enable interface Serial1/5 shutdown serial restart-delay 0 no dce-terminal-timing-enable interface Serial1/6 shutdown serial restart-delay 0 no dce-terminal-timing-enable interface Serial1/7 shutdown serial restart-delay 0 no dce-terminal-timing-enable router eigrp 1 redistribute static no auto-summary address-family ipv4 vrf MANB-REM3 redistribute bgp 1 metric network no auto-summary autonomous-system 103 exit-address-family address-family ipv4 vrf MANB-REM1 redistribute bgp 1 metric network no auto-summary autonomous-system 101 exit-address-family router ospf 1 router-id log-adjacency-changes network area 0 network area 0 router bgp 1 no synchronization bgp log-neighbor-changes neighbor remote-as 1 neighbor update-source Loopback0 neighbor remote-as 1 neighbor update-source Loopback0 no auto-summary address-family vpnv4 neighbor activate neighbor send-community both neighbor activate neighbor send-community both exit-address-family 18

19 Quality of Service and Bandwidth Management Configuration Reference Configuration address-family ipv4 vrf MANB-REM3 redistribute eigrp 103 no auto-summary no synchronization exit-address-family address-family ipv4 vrf MANB-REM1 redistribute eigrp 101 no auto-summary no synchronization exit-address-family ip route no ip http server dialer-list 1 protocol ip permit mpls ldp router-id Loopback0 control-plane gatekeeper shutdown line con 0 stopbits 1 line aux 0 stopbits 1 line vty 0 4 password cisco login end Bandwidth Management Using RSVP Agents The RSVP agent enables Cisco Unified Communications Manager to provide resource reservation for voice and video media to ensure QoS and call admission control (CAC). The RSVP Agent registers with Cisco Unified Communications Manager as either a media termination point or a transcoder device. Each endpoint involved in a call normally requires an RSVP Agent. The agent pair (one agent for endpoint A, another agent for endpoint B) signals RSVP on behalf of the endpoints that Cisco Unified Communications Manager controls. Note RSVP does not support intercluster RSVP Agents.That is, RSVP does not support reservations between two RSVP Agents that are located in different Unified Communications Manager clusters. When a call takes place from a location that has RSVP Agent to another location that does not have RSVP Agent, Cisco Unified Communications Manager will manage the quality of service (QoS) of the call by using both location-based CAC and RSVP. The first part of the call, from the location that has RSVP Agent to the hub/central site that has RSVP, uses the RSVP mechanism. The second part of the call, from the hub/central site to the location that does not have RSVP, gets managed through location-based CAC. If either mechanism fails to allocate bandwidth, the call fails. 19

20 Reference Configuration Quality of Service and Bandwidth Management Configuration RSVP Configuration on Cisco Routers Information on using RSVP Agents with Cisco IOS Software Releases 12.4 T is available at: interface Multilink3 description connected to 7206-PE3 S1/1 bandwidth 384 ip address ppp multilink ppp multilink group 3 max-reserved-bandwidth 100 service-policy output WAN-EDGE ip rsvp signalling dscp ip rsvp resource-provider none dspfarm profile 2 transcode codec g711ulaw codec g711alaw codec g729ar8 codec g729abr8 codec pass-through rsvp maximum sessions 8 associate application SCCP dspfarm profile 1 conference codec g711ulaw codec g711alaw codec g729ar8 codec g729abr8 codec g729r8 codec g729br8 maximum sessions 2 associate application SCCP ip rsvp policy preempt Two complete IOS configurations, one for a Cisco RSVP Agent on a Cisco 2821 router and the second for a Cisco RSVP Agent configured for video deployment, are available as text files in the Resource Library section of the Cisco Unified Communications IP Telephony Technical Information Site for Release 6.1(1) at: Cisco Unified Communications Manager Configuration to Support RSVP Configuration information is included in the "Configuring RSVP Agent" chapter in the Cisco Unified Communications Manager and Cisco IOS Interoperability Guide at: html 20