Cisco Systems ASR 1000 manual DBE Restrictions

Page 54

Chapter 5 Quality of Service and Bandwidth Management

Two-Rate Three-Color Policing and Marking

•Traffic not conforming to the lower sdr rate, but conforming to the higher pdr rate.

These packets are colored with the marker DSCP value and pdr configured with the control-dscpvalue1 marker-dscpvalue2 pdr-coefficientvalue3 command.

–The control-dscpvalue1 keyword enables the Two-Rate Three-Color Policing and Marking feature for a specific flow if value1 matches the DSCP value for the flow in the diffserv package transmitted via H.248.

–The marker-dscpvalue2 keyword colors traffic packets with a DSCP value2. This traffic conforms to the peak data rate (pdr), but does not conform to the sustainable data rate (sdr).

–The pdr-coefficientvalue3 keyword applies the following formula to calculate the pdr value (which is not passed from H.248).

The pdr-coefficient value is calculated as pdr = sdr * value3 /100 (and pdr must be greater than sdr).

•Traffic not conforming to either of the sdr or pdr rates. These packets are dropped.

Note The Two-Rate Three-Color Policing and Marking feature is not enabled for a particular flow if the DSCP value set by H.248 for that flow does not match the configured control-dscpvalue1.

Traffic flows must have the Two-Rate Three-Color Policing and Marking feature enabled to use the three parameters configurable with the Two-Rate Three-Color CLI. Traffic flows that do not have the Two-Rate Three-Color Policing and Marking feature enabled are subject to normal Tman-based policing with pdr, sdr, and mbs parameters configured via H.248, regardless of the pdr coefficient configured via the Two-Rate Three-Color CLI.

The DBE supports dual token bucket policing to support this feature. The DBE uses a “token bucket algorithm” to manage the maximum rate of traffic. This algorithm is used to define the maximum rate of traffic allowed on an interface at a given moment in time. The token bucket algorithm processes as follows—each arriving packet’s size (frame’s size) is subtracted from the contents of the bucket. If the bucket does not have enough tokens for the arriving packet, the packet is dropped and no tokens are removed. The passage of time fills the bucket with tokens and the dispatching of a packet depletes the bucket.

DBE Restrictions

The following are DBE restrictions for the Two-Rate Three-Color Policing and Marking feature:

•The DSCP values configured via CLI are global. Specifically, the DSCP values are shared among all the terminations when this feature is enabled.

•The Two-Rate Three-Color CLI is only applicable to future new call flows and do not trigger any backtrack to established terminations.

•A media gateway controller (MGC), also called the SBE, is only able to use the Tman fields if the DBE supports the various features which make up Tman support.

Cisco IOS XE Integrated Session Border Controller Configuration Guide for the Cisco ASR 1000 Series Aggregation Services Routers

5-6

OL-15421-01

 

 

Page 53 Page 55
Image 54
Page 53 Page 55
Contents Americas Headquarters Page N T E N T S IiiQoS Bandwidth Allocation Traffic Management Package Support Local Source Properties Address and Port IPv6 Support ViiEvents Storage Until Event Acknowledgment Objectives PrefaceDocument Revision History OL-15421-01 May 5 This document was first publishedIntended Audience OrganizationCisco ASR 1000 Series Router Documentation Related DocumentationDocument Conventions Cisco IOS Release 12.2SR Software PublicationsXii Obtaining Documentation and Submitting a Service Request XiiiXiv Contents Cisco ASR 1000 Series Routers OverviewGeneral Overview Distributed and Unified Models Example of SBC High Level ArchitectureOn page 1-3illustrates the unified model Supported Integrated Session Border Controller Features Release Feature Name Related SBC Commands DocumentedPackage segment None Cisco IOS Logging Level in ConfiguringCisco IOS XE ReleaseMedia-address ipv4 Transaction-pending command Deployment of the Integrated Session Border ControllerIntegrated SBC Used for VoIP Interworking Integrated Session Border Controller DBE Deployment Scenario Configuring Integrated Session Border Controller Prerequisites for Integrated Session Border ControllerRestrictions for Integrated Session Border Controller Prerequisites Summary StepsEnters global configuration mode Enables privileged Exec modeEnter your password if prompted Enters into interface configuration modeConfigures the H.248 controller for the DBE and enters into Configures the DBE to use a specific IPv4 H.248 controlOwn address when connecting to the SBE Controller H.248 configuration modeTroubleshooting Tips What To Do NextExamples Configuring H.248 Logging Level Sets a specified logging level to generate detailed logs Creates the DBE service on the SBC and enters intoSBC-DBE configuration mode Messages sent and received. Turns on consoleEnabling H.248 Logging Requests and Responses Configuration Examples This section provides the following configuration examplesExample H.248 Log Output SBC DBE Configuration Steps Example Making Global Changes to Controllers Example Following example shows the initial SBC configuration == Make change to local portMaking Changes to Individual Controller Settings Example Control-address h248 ipv4 172.25.2.26 controller h248Cisco H.248 Profile Topology Priority Indicator Yes Emergency IndicatorIeps Indicator Yes Overview of ProfileProfile Packages Package ID VersionPackage ID Version Support Dependent On Dtmf Interworking Information About Dtmf InterworkingConfiguring Default Duration of a Dtmf Event RTP to SIP InterworkingSIP to RTP Interworking Name of the DBE service Enters the mode of a DBE service and enters into SBC-DBEConfiguration mode. Use the sbc-name argument to specify Configures the default duration of a Dtmf eventPage Restrictions for Configuring Media Address Pools Media Address PoolsPrerequisites for Implementing Media Address Pools Configuring Media Address Pools Information About Media Address PoolsConfiguration mode Is configuredEnters into SBC-DBE configuration mode Creates a port range for the configured mediaConfiguring Media Address Pools Example Quality of Service and Bandwidth Management Traffic Management Package SupportPage Dscp Marking and IP Precedence Marking Dscp Re-MarkingsParameters on AC and per SDP on QoS Bandwidth Allocation Rtcp Policing Using Tman PackageRtcp Policing Not Using Tman Package Rtcp PolicingTwo-Rate Three-Color Policing and Marking Enabling Two-Rate Three-Color Policing and MarkingImplementing Two-Rate Three-Color Policing and Marking DBE Restrictions Related Commands Page Packages-Signaling and Control Enabling Optional H.248 PackagesAddress Reporting Package Segmentation Package SupportSession Failure Reaction Package Tsc-quiesce Feature Termination State Control PackageTsc-suspend Feature 248.1v3 Support Vlan Package Syntax-Level SupportMGC-Controlled Gateway-Wide Properties Page Services-Signaling and Control DBE Signaling Pinhole Support Extension to H.248 Audit Support Extension to H.248 Termination Wildcarding SupportFlexible Address Prefix Provisioning Twice Napt Pinhole Hairpinning Local Source Properties Address and PortLocally Hairpinned Sessions No Napt Pinhole HairpinningMGC-Specified Local Addresses or Ports Multi-Stream Terminations Nine-Tier Termination Name HierarchyRestrictions for Nine-Tier Termination Name Hierarchy Information About Nine-Tier Termination Name Hierarchy Displaying the Nine-Tier Termination Name HierarchyDisplaying the Nine-Tier Termination Name Hierarchy Example Abc/voice/gn/0/1/0/1/ac/3Optional Local and Remote Descriptors ServiceChange Notification for Interface Status Change Remote Source Address Mask FilteringRTP Specific Behavior Support Sbc interface-id value End Configuration Example Output Tmax-timercommand configures the value of the T-MAX timer MAX TimerTsc-Delay Timer Video on Demand VOD SupportServices-Signaling and Control Video on Demand VOD Support Services-Signaling and Control Video on Demand VOD Support Integrated Session Border Controller Security Firewall Media Pinhole Control Interim Authentication Header Support Latch and Relatch SupportLocal Source Properties Address and Port Napt and NAT Traversal Etsi TS 102 333 version 1.1.2 Gate Management PackageTopology Hiding Traffic Management PolicingTopology Hiding IPv4 Twice Napt IPv6 Inter-Subscriber BlockingQoS Policy-Map-Based Inter-Subscriber Blocking Method Router# show run interface gigabitEthernet 0/1.1101Router# show class-map IPv6intersubscriber IPv6 Support ACL-Based Inter-Subscriber Blocking MethodIPv6 Pinholes IPv6 No Napt Support for Media FlowsIPv6 Single Napt for Signaling Send RecvSingle Napt Signaling Flow No Napt Pinholes Topology Hiding No Napt Pinholes High Availability Support Integrated Session Border Controller High Availability10-1 Route Processor Redundancy RPR Hardware RedundancySoftware Redundancy 10-2SSO Support Issu Support10-3 10-4 High Availability Support Issu SupportQuality Monitoring and Statistics Gathering 11-1DBE Status Notification Congestion-threshold CommandBilling and Call Detail Records Enhanced Event Notification and AuditingRetention and Returning of H.248 Event Information 11-3Silent Gate Deletion Association ResetResetting the Media Timeout Timers 11-4Middlebox Pinhole Timer Expired Event Network Package Quality Alert Event11-5 Provisioned Inactivity Timer Related Command11-6 IN-1 IN-2 IN-3 RTP specific behavior support SBE Pinhole Pinhole timeoutPolicing Asymmetric policing Ipv6 packets IN-4IN-5 IN-6
Top Page Image Contents