Cisco Systems 416 User's Manual
Contents
1. For more information about this page see IP Telephony Wizard Remove Network Elements Page page B 132 b Select the ports you want to unassign and click Remove The page closes Click Next If the Display Configuration Info check box is selected the Configuration Info page appears After reviewing the assignments summary click Next The voice policy groups and your CallManager ports assignments will be saved and the next configuration step of the wizard appears Selecting IntraLAN Connections Related Topics e Using QPM Tables page 3 16 e Using the IP Telephony Wizard page 7 5 e Viewing Policy Information page 8 14 Selecting IntraLAN Connections amp In this step the wizard helps you define the appropriate QoS for the internal LAN ports the uplinks and downlinks network points 4 5 and 6 in Figure 7 1 Note No QoS configuration is required on the uplink port of the Layer 2 Catalyst 3500 switch to the Layer 3 distribution switch port The correct QoS configuration for LAN connections is to trust DSCP from Layer 3 devices and trust CoS from Layer 2 devices The wizard will configure the QoS automatically according to the type of neighboring switch I OL 23444 01 User Guide for CiscoWorks QoS Policy Manager 4 1 6 gg Chapter7 Provisioning Configuring QoS for IP Telephony Configuring QoS Using the IP Telephony Wizard Step 1 Step 2 Step 3 If QPM recognizes that the neighboring2. In this case the IP Telephony wizard will be unable to assign network elements to the voice policy You edit a voice policy just like any policy The difference is that when saving QPM checks the device constraints of the voice policy If any changes were made you must save the voice policy as a regular policy without a voice role A full description of modifying policies is provided in Modifying a Policy page 8 15 Related Topics e Using QPM to Configure QoS for IP Telephony page 7 3 Viewing the Voice Ready Report amp The Voice Ready report provides you with an overview of the system s readiness for voice displaying a list of all the configurable and nonconfigurable devices in the current device group The report displays the voice ready status of each device and the reason for nonvoice readiness where relevant For a device to be voice ready it must have all the required software and hardware to support QoS for voice and be supported by QPM Nonconfigurable devices do not have the required software or hardware to support QoS for voice and or are not supported by QPM From this report you can also view the properties of the devices in the list Note Step 1 Step 2 Some devices that appear as voice ready in the report may not be supported by the IP Telephony wizard They must be configured manually by QPM We recommend that you view the Voice Ready report after adding or importing the devices in
3. CHAPTER j Provisioning Configuring QoS for IP Telephony In an Architecture for Voice Video and Integrated Data AV VID network you must configure QoS for IP telephony to ensure voice quality The following topics provide information about the need for configuring QoS in an IP telephony environment and the tools that enable you to do this e Understanding QoS for IP Telephony page 7 1 e Using QPM to Configure QoS for IP Telephony page 7 3 e Configuring QoS Using the IP Telephony Wizard page 7 4 e Modifying Voice Policies page 7 17 e Viewing the Voice Ready Report page 7 18 e Advanced IP Telephony Network Configuration page 7 19 Understanding QoS for IP Telephony Real time based applications in a network such as voice applications have different characteristics and requirements than those of data applications Voice applications tolerate minimal variation in the amount of delay affecting delivery of their voice packets Voice traffic is also intolerant of packet loss and jitter both of which degrade the quality of the voice transmission delivered to the recipient end user To effectively transport voice traffic over IP mechanisms are required that ensure reliable delivery of packets with low latency In an enterprise environment network congestion can occur at any time in any portion of the network campus branch office or WAN For successful deployment of IP telephony you must ensure end to end network quality for v
4. Selection Table In each configuration step you select the network elements that require QoS configuration The available network elements are presented in a table You can hide this table by clicking the arrow button next to Selection Table By default the selection table is open For information about using a selection table see Using QPM Tables page 3 16 By selecting the Display Configuration Info check box in the first configuration step you can choose to view assignment summary information after each configuration step The check box will remain selected in all the other steps Similarly you can uncheck this check box in the first configuration step if you don t want to view the summary information You can override the default selection at each step if required Assignment Summary As you work through the wizard you can choose to view an assignment summary page that displays the voice policies that were created for the current voice role and summary information about the assignment of network elements in the current configuration step I OL 23444 01 User Guide for CiscoWorks QoS Policy Manager 4 1 6 gg Chapter7 Provisioning Configuring QoS for IP Telephony HI Configuring QoS Using the IP Telephony Wizard The following assignments summary information may be displayed e The total number of network elements you selected in this configuration step e The number of network elements that were selected but found t
5. page 9 2 Configuring QoS on ATM to Frame Relay Connections Step 1 Some networks use ATM at the main site but Frame Relay at remote sites for communicating between the main and remote sites If your network uses this setup you can use QPM s ATM to Frame Relay IP telephony templates to deploy QoS on the ATM and Frame Relay interfaces To support IP telephony low speed interfaces less than 768kbps must enable link fragmentation and interleaving For ATM to Frame Relay connections this can be done using Multilink PPP MLP over ATM or Frame Relay This procedure describes how to configure this setup To configure QoS on ATM to Frame Relay Connections Create and bind virtual template interfaces on the ATM PVC and the Frame Relay DLCI For example the bolded commands in these configuration examples show the commands for binding virtual templates to the ATM PVC Example 7 1 and Frame Relay DLCI Example 7 2 See the configuration documentation for your device for information on creating virtual templates User Guide for CiscoWorks QoS Policy Manager 4 1 6 720 i OL 23444 01 Chapter7 Provisioning Configuring QoS for IP Telephony Advanced IP Telephony Network Configuration W Example 7 1 ATM PVC Virtual Template interface ATM4 0 60 point to point protocol ppp Virtual Template60 interface Virtual Template60 bandwidth 256 ip address 10 200 60 1 255 255 255 252 ppp multilink Example 7 2 Frame Relay DLCI Vir
6. 4 15 Device role information is used by the IP Telephony wizard during the selection of interfaces to voice roles For example for the wizard to select an Ethernet 10 100 port on the switch to an IP phone voice role the switch must be an access type switch i e have an access device role If the switch has a distribution device role QPM will not select it If the device role information imported from a file is not up to date you can manually override it in the Device Properties page see Viewing and Editing Device Properties page 4 10 The wizard automatically creates voice policies in the current policy group The policy group may also contain previously created policies containing data traffic rules If required you can change the current policy group when you start working with the wizard e Ifthe required voice policies already exist in the policy group the wizard uses them and assigns the required interfaces to them e Ifarequired voice policy does not exist in the policy group the wizard creates a new one from the relevant template Related Topics e Using QPM to Configure QoS for IP Telephony page 7 3 e Using the IP Telephony Wizard page 7 5 e Adding Devices to the Device Inventory page 4 3 e Working with Policy Templates page 6 4 User Guide for CiscoWorks QoS Policy Manager 4 1 6 z oL 23444 01 Chapter 7 Provisioning Configuring QoS for IP Telephony Configuring QoS Using the IP Telep
7. Configuring QoS for IP Telephony Configuring QoS Using the IP Telephony Wizard You can also create voice policies without the wizard using the voice policy templates supplied by QPM You assign the voice policies in the same way as you would data policies After you have completed the IP Telephony wizard you can modify properties and policies of the voice policies created by the voice wizard to suit a specific network configuration Related Topics e Configuring QoS Using the IP Telephony Wizard page 7 4 e Modifying Voice Policies page 7 17 e Working with Policy Templates page 6 4 Configuring QoS Using the IP Telephony Wizard The IP Telephony wizard allows you to configure QoS for voice traffic on the network The wizard handles VoIP configuration in common IP telephony network topologies It guides you through the steps required to define your IP telephony network topology At each step the wizard automatically creates the voice policies that include the QoS properties and traffic rules required at each network point interface where QoS is a concern The wizard presents only the interfaces on which the relevant QoS can be configured You need to select the network elements that require QoS configuration at each network point The wizard then automatically assigns the interfaces to the appropriate voice policies QPM allows you to import files which contain device role information about devices see Removing Devices page
8. Frame Relay DLCI s WAN links When you assign a role to a DLCI the role will also be assigned to the interface to which the DLCI belongs QPM will configure both the DLCIs and the interfaces Note Step 1 Step 2 Step 3 The IP Telephony wizard currently supports only Frame Relay to Frame Relay network configuration and not Frame Relay to ATM configuration QPM does include templates for Frame Relay to ATM connections see Configuring QoS on ATM to Frame Relay Connections page 7 20 QPM also includes ATM templates see Configuring QoS on ATM Connections page 7 20 The wizard describes the tools that will be used to configure the QoS settings for these interfaces You must select all the Frame Relay interfaces from both the central and the remote sites that carry voice traffic The wizard will automatically configure QoS separately for groups of interfaces according to their link speed To select WAN Frame Relay connections Select the interfaces on which to configure QoS for the Frame Relay WAN links by selecting the check boxes next to the appropriate Frame Relay interfaces in the list For more information about the columns in this table see IP Telephony Wizard Select WAN Frame Relay Connections Page page B 145 To remove any interfaces that were previously assigned for this voice role a Click the Remove button in the Advanced section of the page A page appears displaying the interfaces assigned for the WAN Fr
9. telephony QoS for high speed campus domains branch offices and WAN implementations Figure 7 1 IP Telephony Network Model SoftPhone CallManager i F gt gt i Remote Branch y gt Q0 E y i 1 i E Catalyst 6000 Access Switch mp g PFC Catalyst 6000 Distribution switch i i S with PFC Catalyst 2900 Access Switch i Catalyst 3500 a Access Switch 63130 User Guide for CiscoWorks QoS Policy Manager 4 1 6 a OL 23444 01 Chapter 7 Provisioning Configuring QoS for IP Telephony Using OPM to Configure QoS for IP Telephony W Table 7 1 explains the network points that require QoS configuration for IP telephony Table 7 1 Network Points Requiring QoS Configuration Network Point in Figure 7 1 Description 1 Access switch IP phone ports 2 Layer 3 QoS aware access switch with PFC SoftPhone port 3 Layer 3 QoS aware access switch with PFC CallManager port 4 Layer 3 QoS aware access switch with PFC uplink port to distribution switch with PFC 5 Distribution switch downlink port to Layer 3 QoS aware access switch with PFC 6 Distribution switch downlink port to Layer 2 QoS aware access switch 7 Layer 3 distribution switch port to WAN router 8 WAN interface 9 Branch office router interface to Layer 2 QoS aware switch Related Topics e Understanding QoS for IP Telephony page 7 1 e U
10. 44 01 Chapter 7 Provisioning Configuring QoS for IP Telephony Introduction Step 1 Step 2 Configuring QoS Using the IP Telephony Wizard W e Selecting IntraLAN Connections e Selecting Voice VLAN Connections e Selecting Switch to WAN Router Connections e Selecting Router WAN to Switch Connections e Selecting WAN Point to Point Connections e Selecting WAN Frame Relay Connections e End Before you Begin To run the wizard it is assumed that the following preconditions have been met e Voice VLANs have been configured on all the relevant ports of the devices to enable the wizard to attach QoS properties to these VLANs e All the relevant devices in your network were added or imported to QPM s device inventory Related Topics e Configuring QoS Using the IP Telephony Wizard page 7 4 e IP Telephony Wizard Assignment Summary Page page B 129 e Viewing Policy Information page 8 14 The first page is an introduction to the wizard It includes an overview of why QoS configuration is necessary for VoIP networks and how the wizard will guide you to configure QoS for IP telephony Before you run the wizard ensure that all the required devices in your IP telephony network have been added to the device inventory If not you must exit the wizard and add or import them After adding your devices you can check that your devices support voice QoS by running the Voice Ready report The Voice Ready report shows all the dev
11. Devices to the Device Inventory page 4 3 e Viewing the Voice Ready Report page 7 18 Selecting IP Telephony Devices In this step of the wizard you select the devices that you want to participate in the current IP Telephony wizard session All the devices in the device group that support IP telephony features according to model and OS are displayed in a table The wizard will configure only the network elements from the selected devices By default the wizard selects all the devices Devices that do not support IP telephony are not displayed If required you can open the Voice Ready report to see all the devices in the current device group and whether or not they support QoS for voice If you opened the IP Telephony wizard before you added or imported your devices no devices will be displayed in the table In this case you must add or import devices into the device inventory Click Cancel to exit the wizard and open the Add Import Devices wizard see Adding Devices to the Device Inventory page 4 3 Some devices such as Catalyst 6000 and Catalyst 4000 switches require global device configuration If any of the selected devices require global device configuration the wizard immediately assigns them to the appropriate voice policy groups with a Voice Device voice role Clicking the link on this page opens an information window describing this feature To select IP Telephony devices Step 1 In the table check the check boxes next
12. User Guide for CiscoWorks QoS Policy Manager 4 1 6 Chapter7 Provisioning Configuring QoS for IP Telephony W Advanced IP Telephony Network Configuration Configuring QoS on ATM Connections Step 1 Step 2 Step 3 The QPM IP Telephony wizard does not configure ATM connections However QPM includes templates that you can use to create policy groups for your ATM interfaces To configure QoS on ATM Connections Create and bind virtual template interfaces on the ATM PVC For example the bolded command in this configuration example shows the commands for binding virtual templates to the ATM PVC See the configuration documentation for your device for information on creating virtual templates interface ATM4 0 60 point to point protocol ppp Virtual Template60 interface Virtual Template60 bandwidth 256 ip address 10 200 60 1 255 255 255 252 ppp multilink If you have already added the devices to QPM rediscover the devices in QPM so that the virtual template interfaces are recognized See Rediscovering Device Information page 4 12 Otherwise add the devices to QPM see Adding Devices to the Device Inventory page 4 3 Create policy groups from these QPM templates and assign them to the described interfaces e WanATM VirtualTemplate Assign to the ATM virtual template interfaces e WanATMHighSpeed Assign to the ATM PVC for interfaces greater than 768kbps Deploy the policies See Deploying Policies and QoS Configurations
13. ame Relay voice role For more information about this page see IP Telephony Wizard Remove Network Elements Page page B 132 b Select the interfaces you want to unassign and click Remove The page closes Click Next If the Display Configuration Info check box is selected the Configuration Info page appears After reviewing the assignments summary click Next User Guide for CiscoWorks QoS Policy Manager 4 1 6 P76 OL 23444 01 Chapter7 Provisioning Configuring QoS for IP Telephony Modifying Voice Policies Hil The voice policy groups and your WAN Frame Relay interface assignments will be saved and the last step of the wizard appears End page 7 17 Related Topics e Using QPM Tables page 3 16 e Using the IP Telephony Wizard page 7 5 e Viewing Policy Information page 8 14 e Troubleshooting the IP Telephony Network page 14 14 End The final step of the IP Telephony wizard informs you that all the QoS settings have been completed and that the wizard has added and saved the policies in the current deployment group From this page you can select to go to the Deployment wizard to deploy the deployment group directly or to the Policy Groups page to view a detailed summary of all the voice policy groups that were created by the wizard From the Policy Groups page you can modify the properties and policies configured in the voice policy groups if required To finish the wizard Step 1 Select the Yes or No ra
14. dio button depending on whether or not you want to deploy your QoS policies Step2 Click Finish to close the wizard The Policy Groups page or the Deployment wizard appears Related Topics e Modifying Voice Policies page 7 17 e Modifying a Policy page 8 15 e Chapter 9 Provisioning Deploying QoS Policies Modifying Voice Policies After you have completed the IP Telephony wizard you can modify properties and traffic rules of the voice policies created by the voice wizard to suit a specific network configuration You can also add nonvoice rules to the default voice policies Note You cannot modify a voice policy that is linked to a policy template You must disconnect the voice policy from its template or modify the template After you have completed the IP Telephony wizard and you selected not to deploy your QoS policies directly see End page 7 17 the Policy View page automatically appears User Guide for CiscoWorks QoS Policy Manager 4 1 6 o1 23444 01 E Chapter7 Provisioning Configuring QoS for IP Telephony W Viewing the Voice Ready Report The Policy View page displays all voice policies together with non voice policies in the current policy group For each voice policy its associated voice role is displayed You can modify any of the properties and traffic rules of a voice policy except for its device constraints Changing the device constraints will cause the voice policy to lose its voice role
15. h has only layer 2 QoS capabilities the router must classify traffic on input and set layer 2 CoS bits on output To select Router WAN to Switch connections Select the switch interfaces on which to configure QoS for the router interfaces to the distribution and access switches by selecting the check boxes next to the appropriate interfaces in the list For more information about the columns in this table see IP Telephony Wizard Select Router WAN to Switch Connections Page page B 141 To remove any interfaces that were previously assigned for this voice role a Click the Remove button in the Advanced section of the page A page appears displaying the interfaces assigned for the Router WAN to Switch voice role For more information about this page see IP Telephony Wizard Remove Network Elements Page page B 132 b Select the interfaces you want to unassign and click Remove The page closes Click Next User Guide for CiscoWorks QoS Policy Manager 4 1 6 PT OL 23444 01 Chapter 7 Provisioning Configuring QoS for IP Telephony Configuring QoS Using the IP Telephony Wizard W If the Display Configuration Info check box is selected the Configuration Info page appears After reviewing the assignments summary click Next The voice policy groups and your Router to Switch interface assignments will be saved and the next configuration step of the wizard appears Selecting WAN Point to Point Connections Related Top
16. hony Wizard W Using the IP Telephony Wizard This topic describes the following main features of the IP Telephony wizard pages and how to use those features e Description page 7 5 e Advanced page 7 5 e Selection Table page 7 5 e Assignment Summary page 7 5 e Saving Your Assignments page 7 6 Description Each configuration step page of the wizard includes a description of the QoS policies that will be configured on the interfaces for the selected voice role You can view or hide this description by clicking the arrow button next to Description By default the description is hidden Advanced The Advanced section of a configuration step page provides two buttons e Remove This button opens a page in which you can remove network elements that were assigned for a voice role This option allows you to change your selection of network elements after they have been assigned to voice policies The wizard removes the assignment of selected elements from the voice policy e Recommend If QPM recommended rules are available for a specific voice role clicking this button activates the wizard to accept the recommended selection of network elements for the current voice role The network elements are selected but not assigned to voice policies A list of the rules for the current voice role is displayed You can view or hide the Advanced section by clicking the arrow button next to Advanced By default this section is hidden
17. ices in the current device group and whether or not they support voice QoS This page also displays the name of the current deployment group that will be used by the wizard for defining the IP telephony policies You can change the current deployment group if required To open the Introduction page of the wizard Choose Provisioning gt Policy View The Policy View page opens Click Voice Policy The IP Telephony Wizard Introduction page appears I OL 23444 01 User Guide for CiscoWorks QoS Policy Manager 4 1 6 gg Chapter7 Provisioning Configuring QoS for IP Telephony HI Configuring QoS Using the IP Telephony Wizard If you are running the wizard for the first time click the Before you run the wizard for the first time link A window opens prompting you to check the following e If you opened the wizard before adding or importing your devices into QPM s device inventory click Cancel to exit the wizard and add or import your devices before running the wizard e Check if your devices support voice QoS by viewing the Voice Ready report You can open this report in one of the following ways e Click the Voice Ready Report link in step 2 of the wizard e Choose Reports gt IP Telephony To change the displayed deployment group select the required one from the list box Step3 Click Next to move to the first configuration step of the wizard Related Topics e Selecting IP Telephony Devices page 7 8 e Adding
18. ics e Using QPM Tables page 3 16 e Using the IP Telephony Wizard page 7 5 e Viewing Policy Information page 8 14 Selecting WAN Point to Point Connections Step 1 Step 2 Step 3 This step of the wizard allows you to select the interfaces on which to configure QoS for the Serial Point to Point links in the WAN segment of your network You should select all MLP and HDLC interfaces from both the central and the remote sites that carry voice traffic For Point to Point links with speeds equal to or less than 768 kbs you should select Multilink interfaces selecting a serial interface may cause a deployment failure The wizard will automatically configure QoS separately for groups of interfaces with link speeds greater than 768kbs and those with link speeds equal to or less than 768kbs In certain types of configurations where the rate of a multilink interface is not defined and the serial bandwidth is less than or equal to 768 kbits the IP Telephony wizard assigns the multilink interfaces to high speed policy groups instead of low speed policy groups To make the correct assignment in the IP Telephony wizard you must define the bandwidth on the multilink interface using the device s bandwidth CLI command To select WAN Point to Point connections Select the interfaces on which to configure QoS for the WAN Serial Point to Point links by selecting the check boxes next to the appropriate interfaces in the list For more i
19. ions Step 1 Step 2 This step of the wizard describes the QoS requirements for all catalyst ports to which IP phones are connected and asks you to select the switch ports on which the wizard will configure the QoS settings for the IP phone connections network point 1 in Figure 7 1 To select IP phone connections In the selection table select the switch ports on which to configure QoS for your IP phones by selecting the check boxes next to the appropriate Ethernet ports For more information about the columns in this table see IP Telephony Wizard Select IP Phone Connections Page page B 130 To remove any ports that were previously assigned for this voice role a Click the Remove button in the Advanced section of the page A page appears displaying the network elements assigned for the IP Phones voice role For more information about this page see IP Telephony Wizard Remove Network Elements Page page B 132 b Select the ports you want to unassign and click Remove The page closes I OL 23444 01 User Guide for CiscoWorks QoS Policy Manager 4 1 6 gg Chapter7 Provisioning Configuring QoS for IP Telephony Hs Configuring QoS Using the IP Telephony Wizard Step3 Click Next If the Display Configuration Info check box is selected the Configuration Info page appears After reviewing the assignments summary click Next The voice policy groups and your IP phones ports assignments will be saved and the nex
20. nformation about the columns in this table see IP Telephony Wizard Select WAN Point to Point Connections Page page B 143 To remove any interfaces that were previously assigned for this voice role a Click the Remove button in the Advanced section of the page A page appears displaying the interfaces assigned for the WAN Point to Point voice role For more information about this page see IP Telephony Wizard Remove Network Elements Page page B 132 b Select the interfaces you want to unassign and click Remove The page closes Click Next If the Display Configuration Info check box is selected the Configuration Info page appears After reviewing the assignments summary click Next I OL 23444 01 User Guide for CiscoWorks QoS Policy Manager 4 1 6 gg Chapter7 Provisioning Configuring QoS for IP Telephony Hs Configuring QoS Using the IP Telephony Wizard The voice policy groups and your WAN Serial Point to Point interface assignments will be saved and the next configuration step of the wizard appears Selecting WAN Frame Relay Connections Related Topics e Using QPM Tables page 3 16 e Using the IP Telephony Wizard page 7 5 e Viewing Policy Information page 8 14 e Troubleshooting the IP Telephony Network page 14 14 Selecting WAN Frame Relay Connections amp If the interface connections in the WAN segment of your network support Frame Relay configuration this step of the wizard allows you to select the
21. ng QoS for IP Telephony Hs Configuring QoS Using the IP Telephony Wizard Step 3 For more information about this page see IP Telephony Wizard Remove Network Elements Page page B 132 b Select the interfaces you want to unassign and click Remove The page closes Click Next If the Display Configuration Info check box is selected the Configuration Info page appears After reviewing the assignments summary click Next The voice policy groups and your Switch to WAN Router interface assignments will be saved and the next configuration step of the wizard appears Selecting Router WAN to Switch Connections Related Topics e Using QPM Tables page 3 16 e Using the IP Telephony Wizard page 7 5 e Viewing Policy Information page 8 14 Selecting Router WAN to Switch Connections Step 1 Step 2 Step 3 In this step the wizard sets QoS for the WAN router connection to the access layer 2 QoS aware switch in the branch office network point 9 in Figure 7 1 By default a router trusts the interface to a distribution layer 3 QoS aware switch so no special QoS is required on the router input direction For example in Figure 7 1 there is no need to set QoS for the router connection to the Catalyst 6000 distribution switch in the campus In addition no special QoS is required on the output direction since the layer 3 switch knows to trust DSCP from the router and sets the CoS bits accordingly However if the switc
22. o be previously assigned to voice policies with this voice role e The number of network elements that were newly assigned to a voice policy with this voice role This may include elements that were previously assigned to voice policy groups with different voice roles e The number of network elements that were selected in this configuration step but were not assigned to the voice role because they have no policies for this voice role These elements appear in the selection list because they have the same interface type as other elements that can be selected For example although GigabitEthernet interfaces have the same interface type as FastEthernet interfaces they cannot be connected to an IP phone During IP phone configuration these interfaces will not be assigned to voice policy groups for the IP Phones voice role e The number of related assignment elements These are network elements that were not selected or were not in the selection table but were assigned to voice policy groups to complete the configuration correctly For example when you configure traffic shaping on a DLCI you must also enable it on a main frame relay interface e The number of reassigned network elements If network elements were found to be already assigned to voice policy groups with different voice roles the wizard overrides the previous assignment and assigns them to voice policies with the new voice role From this assignment summary page you can als
23. o view detailed information about a voice policy group and a list of the newly assigned network elements Saving Your Assignments You work through each step of the wizard by clicking the Next button in each page or you can use the Navigation TOC that is displayed on the left side of each page to move directly to the step you want to do Clicking Next to move to the next configuration step or selecting another step forward in the Navigation TOC saves the voice policies and the assignments that were made for that voice role to the deployment group Clicking Cancel Back or selecting another step backward in the Navigation TOC undoes any configuration changes you made in that step If the Display Configuration Info check box is selected clicking Next opens the assignments summary page for that configuration step The voice policies will be saved in the policy group but the assignment of interfaces to them will not be saved After reviewing your assignments summary clicking Next in this page saves both the voice policy groups and the interface assignments and opens the next step of the wizard Step by step procedures for configuring QoS using the IP Telephony wizard are described in the following sections e Introduction e Selecting IP Telephony Devices e Selecting IP Phone Connections e Selecting SoftPhone Connections e Selecting CallManager Connections User Guide for CiscoWorks QoS Policy Manager 4 1 6 PT E OL 234
24. oice traffic To ensure voice quality you must use QoS in all areas of the enterprise network To make a proper QoS configuration you must first identify the points where QoS is a concern then choose the appropriate QoS tools to use and deploy to the devices in the network User Guide for CiscoWorks QoS Policy Manager 4 1 6 o1 23444 01 E Chapter7 Provisioning Configuring QoS for IP Telephony W Understanding QoS for IP Telephony QPM provides tools that can determine and configure the optimum QoS for a voice network These include e Provisioning tools Lets you define the correct policies for interfaces on the voice paths QPM provides voice policies that contain the QoS configurations and traffic rules required at each relevant point in the network that needs QoS for IP telephony e Deployment tools Lets you deploy these policies on the network and monitor the deployment process e Reporting tools Graphs and charts help you identify and troubleshoot QoS related issues Related Topics e Network Model for Configuring QoS for IP Telephony page 7 2 e Using QPM to Configure QoS for IP Telephony page 7 3 e Viewing the Voice Ready Report page 7 18 e Chapter 9 Provisioning Deploying QoS Policies Network Model for Configuring QoS for IP Telephony Figure 7 1 shows a typical network model for configuring QoS for IP telephony in an enterprise environment QPM supports the QoS methods required to configure IP
25. pe of the wizard These topics describe some of these configuration issues e Policing SoftPhone Traffic page 7 19 e Configuring QoS on ATM Connections page 7 20 e Configuring QoS on ATM to Frame Relay Connections page 7 20 In addition to these topics see the Cisco AVVID Network Infrastructure Enterprise Quality of Service Design Guide which provides a blueprint for implementing the end to end Quality of Service QoS This QoS is required for successful deployment of Cisco AVVID solutions in today s enterprise environment It is located at www cisco com warp customer 77 1 srnd qos_srnd pdf Policing SoftPhone Traffic On a Catalyst port that is connected to a PC running a Cisco IP SoftPhone application the IP Telephony wizard marks all the VoIP traffic with DSCP value 46 and all the control traffic with DSCP 26 If PC users begin sending non priority traffic using the VoIP UDP ports or the CTI TCP port this non priority traffic will receive the same quality of service from the network as VoIP traffic or VoIP control traffic You can configure policing on the inbound traffic of the Catalyst port to prevent the PC from flooding the queues for DSCP 46 traffic For example e You can police VoIP traffic at a rate of 100kbps with a burst of 2kb e You can police control traffic at 8kbps configure 32kbs with a burst of 8kb You should also set the markdown table on the device from DSCP 46 to 0 and DSCP 26 to 0 I OL 23444 01
26. phone ports are configured to use an auxiliary voice VLAN on the switches and the QoS style on the IP phone ports is set to VLAN based it is important to attach the appropriate policies to the voice VLAN In this step the wizard configures VLAN based QoS style for an auxiliary VLAN on the connection of the IP phones to the Catalyst 6000 access switch and also on the Layer 2 switch to Layer 3 switch connection User Guide for CiscoWorks QoS Policy Manager 4 1 6 PT oL 23444 01 Chapter 7 Provisioning Configuring QoS for IP Telephony Step 1 Step 2 Step 3 Configuring QoS Using the IP Telephony Wizard W To select Voice VLAN connections In the selection table select the auxiliary VLANs on which to configure QoS on both the access and distribution layer switches For more information about the columns in this table see IP Telephony Wizard Select Voice VLAN Connections Page page B 138 To remove any VLANs that were previously assigned for this voice role a Click the Remove button in the Advanced section of the page A page appears displaying the VLANs assigned for the Voice VLAN voice role For more information about this page see IP Telephony Wizard Remove Network Elements Page page B 132 b Select the VLANs you want to unassign and click Remove The page closes Click Next If the Display Configuration Info check box is selected the Configuration Info page appears After reviewing the assignments
27. sing QPM to Configure QoS for IP Telephony page 7 3 Using QPM to Configure QoS for IP Telephony The QPM IP Telephony application provides a solution for configuring QoS for voice traffic in an AVVID network The solution is an IP Telephony wizard that creates voice policies at each network point that requires IP telephony QoS configuration Voice policies are policies that contain the QoS properties and traffic rules for each relevant point in the IP telephony network A voice policy contains a voice role attribute which specifies the role of an interface according to its type function and location on the network such as IP phone Switch to WAN Router QPM allows you to modify properties and traffic rules of certain voice policies created by the wizard to suit specific network configurations as required The IP Telephony wizard creates voice policies from voice policy templates which are provided by QPM in the Policy Templates library These templates follow the IP telephony QoS guidelines described in the IP Telephony QoS Design Guide www cisco com warp customer 77 1 srnd qos_srnd pdf If the required templates do not exist during IP telephony QoS configuration they can also be generated by the wizard and stored in the library Some templates that are provided by QPM such as ATM links might not be used by the IP Telephony wizard I OL 23444 01 User Guide for CiscoWorks QoS Policy Manager 4 1 6 Chapter7 Provisioning
28. summary click Next The voice policy groups and your Voice VLAN assignments will be saved and the next configuration step of the wizard appears Selecting Switch to WAN Router Connections Related Topics e Using QPM Tables page 3 16 e Using the IP Telephony Wizard page 7 5 e Viewing Policy Information page 8 14 e Troubleshooting the IP Telephony Network page 14 14 Selecting Switch to WAN Router Connections Step 1 Step 2 In this step the wizard sets QoS for the distribution switch interfaces to the WAN router network point 7 in Figure 7 1 Since the traffic coming from the WAN side is already classified the QoS configuration for the distribution switch interface to the router will be to trust the layer 3 DSCP bits To select Switch to WAN Router connections Select the switch interface on which to configure QoS for the distribution switch connection to the WAN router by selecting the check box next to the appropriate port in the selection table For more information about the columns in this table see IP Telephony Wizard Select Switch to WAN Router Connections Page page B 140 To remove any interfaces that were previously assigned for this voice role a Click the Remove button in the Advanced section of the page A page appears displaying the interfaces assigned for the Switch to WAN Router voice role I OL 23444 01 User Guide for CiscoWorks QoS Policy Manager 4 1 6 gg Chapter7 Provisioning Configuri
29. switch has Layer 3 QoS capabilities it will trust DSCP from the Layer 3 switch If there is no neighboring switch or if the switch is of unknown type QPM will configure QoS for a Layer 2 device To select IntraLAN connections Select the switch interfaces on which to configure QoS for the LAN connections in the network by selecting the check boxes next to the appropriate interfaces in the selection table For more information about the columns in this table see IP Telephony Wizard Select IntraLAN Connections Page page B 136 To remove any interfaces that were previously assigned for this voice role a Click the Remove button in the Advanced section of the page A page appears displaying the network elements assigned for the IntraLAN voice role For more information about this page see IP Telephony Wizard Remove Network Elements Page page B 132 b Select the interfaces you want to unassign and click Remove The page closes Click Next If the Display Configuration Info check box is selected the Configuration Info page appears After reviewing the assignments summary click Next The voice policy groups and your LAN interfaces assignments will be saved and the next configuration step of the wizard appears Selecting Voice VLAN Connections Related Topics e Using QPM Tables page 3 16 e Using the IP Telephony Wizard page 7 5 e Viewing Policy Information page 8 14 Selecting Voice VLAN Connections Since the IP
30. t configuration step of the wizard appears Selecting SoftPhone Connections Related Topics e Using QPM Tables page 3 16 e Using the IP Telephony Wizard page 7 5 e Viewing Policy Information page 8 14 Selecting SoftPhone Connections This step of the wizard describes the QoS requirements for a Catalyst 6000 with PFC switch that is connected to a PC running a Cisco IP SoftPhone application You should select the switch ports on which the wizard will configure QoS settings for the SoftPhone connections in your network network point 2 in Figure 7 1 To select SoftPhone connections Step 1 In the selection table select the switch ports on which to configure QoS for the SoftPhone connections in the network by selecting the check boxes next to the appropriate Ethernet ports in the list For more information about the columns in this table see IP Telephony Wizard Select SoftPhone Connections Page page B 133 Step2 To remove any ports that were previously assigned for this voice role a Click the Remove button in the Advanced section of the page A page appears displaying the network elements assigned for the SoftPhones voice role For more information about this page see IP Telephony Wizard Remove Network Elements Page page B 132 b Select the ports you want to unassign and click Remove The page closes Step3 Click Next If the Display Configuration Info check box is selected the Configuration Info page appears Af
31. ter reviewing the assignments summary click Next The voice policy groups and your SoftPhones port assignments will be saved and the next configuration step of the wizard appears Selecting CallManager Connections Related Topics e Using QPM Tables page 3 16 e Using the IP Telephony Wizard page 7 5 e Viewing Policy Information page 8 14 User Guide for CiscoWorks QoS Policy Manager 4 1 6 P70 OL 23444 01 Chapter 7 Provisioning Configuring QoS for IP Telephony Configuring QoS Using the IP Telephony Wizard W Selecting CallManager Connections Step 1 Step 2 Step 3 This step of the wizard describes the QoS requirements for Catalyst ports to which CallManagers or Voice Gateways are connected and asks you to select the switch ports on which the wizard will configure the QoS settings for these connections in your network network point 3 in Figure 7 1 To select Call Manager connections Select the switch port on which to configure QoS for the CallManager connection in the network by selecting the check box next to the appropriate Ethernet port in the selection table For information about the columns in this table see IP Telephony Wizard Select CallManager Connections Page page B 134 To remove any ports that were previously assigned for this voice role a Click the Remove button in the Advanced section of the page A page appears displaying the network elements assigned for the CallManager voice role
32. to the devices you want to configure for voice QoS For more information about the columns in this table see IP Telephony Wizard Select IP Telephony Devices Page page B 128 Step2 To view the Voice Ready report click the Voice Ready report link User Guide for CiscoWorks QoS Policy Manager 4 1 6 PTs E OL 23444 01 Chapter 7 Provisioning Configuring QoS for IP Telephony Step 3 Step 4 Configuring QoS Using the IP Telephony Wizard W Select deselect to view the Assignment Summary page e Ifyou want to view summary information about the assignments made at each configuration step of the wizard select the Display Configuration Info check box and click Next The Assignment Summary page appears For information about the Assignment Summary page see IP Telephony Wizard Assignment Summary Page page B 129 e If you don t want to view the assignments summary at each configuration step of the wizard uncheck the Display Configuration Info check box Click Next The voice policy groups and your network element assignments will be saved and the next configuration step of the wizard appears Selecting IP Phone Connections Related Topics e Using QPM Tables page 3 16 e Adding Devices to the Device Inventory page 4 3 e Using the IP Telephony Wizard page 7 5 e Modifying Voice Policies page 7 17 e Viewing the Voice Ready Report page 7 18 e Viewing Policy Information page 8 14 Selecting IP Phone Connect
33. tual Template interface Serial6 0 no ip address encapsulation frame relay 1 interface Serial6 0 60 point to point bandwidth 256 frame relay interface dlci 60 ppp Virtual Template60 interface Virtual Template60 bandwidth 256 ip address 10 200 60 2 255 255 255 252 ppp multilink If you have already added the devices to QPM rediscover the devices in QPM so that the virtual template interfaces are recognized See Rediscovering Device Information page 4 12 Otherwise add the devices to QPM see Adding Devices to the Device Inventory page 4 3 Step2 Create policy groups from these QPM templates and assign them to the described interfaces e WanATM2FR FR Main Assign to the main Frame Relay interface e WanATM2FRVirtualTemplate Assign to both the ATM and Frame Relay virtual template interfaces e WanATM2FR FR DLCI Assign to the Frame Relay DLCI e WanATM2FR ATM PVC Assign to the ATM PVC Step3 Deploy the policies See Deploying Policies and QoS Configurations page 9 2 User Guide for CiscoWorks QoS Policy Manager 4 1 6 o1 23444 01 EN Chapter7 Provisioning Configuring QoS for IP Telephony HE Advanced IP Telephony Network Configuration User Guide for CiscoWorks QoS Policy Manager 4 1 6 a OL 23444 01
34. your IP telephony network to QPM s device inventory so that you can check whether your devices support voice QoS In the second step of the IP Telephony wizard only the devices that support IP telephony features are displayed in a table Devices that do not support IP telephony are not displayed By opening the Voice Ready report you can see all the devices in the current device group including those that do not support QoS for voice To view the Voice Ready Report In Step 2 Select Devices of the IP Telephony wizard click the Voice Ready Report link The Voice Ready report appears displaying the voice status of each device and the reason for non voice readiness where relevant To view details about a device in the table click the Sys Name link for the required device in the table The Device Properties page appears for the selected device User Guide for CiscoWorks QoS Policy Manager 4 1 6 a OL 23444 01 Chapter 7 Provisioning Configuring QoS for IP Telephony Advanced IP Telephony Network Configuration W Related Topics e Introduction page 7 7 e Selecting IP Telephony Devices page 7 8 e Using QPM Tables page 3 16 e Viewing and Editing Device Properties page 4 10 Advanced IP Telephony Network Configuration Although QPM s IP Telephony wizard can configure many of the QoS requirements for an AVVID network there are some potential configurations you might need to consider that are beyond the sco
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