Contents
- Configuring IP SLAs Video Operations
- Finding Feature Information
- Prerequisites for IP SLAs Video Operations
- Restrictions for IP SLAs Video Operations
- Information About IP SLAs Video Operations
- How to Configure IP SLAs Video Operations
- Configuring an IP SLAs Responder
- Configuring an IP SLAs Video Profile
- Configuring Proactive Threshold Monitoring
- Scheduling IP SLAs Operations
- Displaying Statistics for IP SLAs
- Troubleshooting Tips
- Configuration Examples for IP SLAs Video Operations
- Example: Basic IP SLAs Video Profile for Cisco TelePresence 1080P Traffic
- Example: Basic IP SLAs Video Profile for IP Television Traffic
- Example: Basic IP SLAs Video Profile for IP Surveillance Camera Traffic
- Additional References
- Feature Information for IP SLAs Video Operations
Configuring IP SLAs Video Operations
This document describes how to configure the Cisco IOS IP Service Level Agreements (SLAs) Video Operation feature to analyze one-way delay, one-way packet loss, one-way jitter, and connectivity in networks that carry video traffic.
- Finding Feature Information
- Prerequisites for IP SLAs Video Operations
- Restrictions for IP SLAs Video Operations
- Information About IP SLAs Video Operations
- How to Configure IP SLAs Video Operations
- Configuration Examples for IP SLAs Video Operations
- Additional References
- Feature Information for IP SLAs Video Operations
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information Table at the end of this document.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Prerequisites for IP SLAs Video Operations
- Both the source and responder devices for the IP SLAs video operation must be capable of providing platform-assisted video traffic generation and reflection.
- Time synchronization, such as that provided by Network Time Protocol (NTP), is required between the source and the responder device in order to provide accurate one-way delay (latency) measurements. To configure NTP on the source and target devices, perform the tasks in the “Performing Basic System Management” module in the Cisco IOS Network Management Configuration Guide.
Restrictions for IP SLAs Video Operations
-
This feature is supported only on Cisco devices that are capable of generating platform-assisted video traffic and reflection, such as the Cisco Catalyst 3560, 3560-E, 3560-X, 3750, 3750-E, and 3750-X Series switches.
Note
The preceding list may not be all inclusive. See your product documenation for more information. - IP SLAs video operations do not support Round Trip Time (RTT) traffic.
- Because IP SLAs video operations support only one-way traffic, an operation and a responder must be configured on both the source and responder and both devices must support SNMP access.
- IP SLAs video operations are supported in IPv4 networks only.
Information About IP SLAs Video Operations
The platform-independent IP Service Level Agreements (SLAs) is a feature embedded in Cisco software. It allows you to understand IP service levels, increase productivity, lower operational costs, and reduce the frequency of network outages. IP SLAs performs the active monitoring of the network performance and can be used for network troubleshooting, network readiness assessment, and health monitoring.
IP SLAs in Cisco software is incapable of generating the high data rates, 4 to 16 Mbps, which are typical of video applications. To eliminate the protocol overhead and the process scheduling delays that contribute to the limitations of the earlier IP SLAs software to generate video traffic, the Cisco IP SLAs Video Operation feature makes the traffic generation and transmission routines platform dependent. Application programming interface (API) calls in the IP SLAs video operation software enable a more precise timer interrupt than the general system timer, which is insufficient for the packet generation requirements for a true video stream. Devices that can act as a source or a responder for an IP SLAs video operation are limited to Cisco routers and switches that are capable of providing platform-assisted video traffic generation and reflection.
An IP SLAs video operation differs from other IP SLA operations in that all traffic is one way only, with a responder required to process the sequence numbers and time stamps locally and to wait for a request from the source before sending the calculated data back.
The source sends a request to the responder when the current video operation is done. This request signals the responder that no more packets will arrive, and that the video sink function in the video operation can be turned off. When the response from the responder arrives at the source, the statistics are read from the message, and the relevant fields in the operation are updated.
Because all video operation traffic is one way, the responder is responsible for actually collecting and verifying the packets. The software that does packet count verification and time stamp jitter calculations is shared by both the source and responder. The responder stores this information until such time that the source requests the data, or a timer expires and the data is released.
Because the responder cannot directly read the video packets, the responder creates two queues and a block of reallocated memory for use by both video sink and the responder itself.
When a packet arrives at video sink, it is processed to extract the sequence numbers and time stamps, and that information is put into one of the pre-allocated memory blocks. A pointer to this block is put into the usedqueue for later processing by the main responder task.
At periodic timer intervals, the responder processes a number of the packet information blocks from the used queue and updates the statistics appropriately. When the data is processed, the blocks are returned to the free-memory list to be used again.
This procedure continues until the video operation is complete.
How to Configure IP SLAs Video Operations
- Configuring an IP SLAs Responder
- Configuring an IP SLAs Video Profile
- Configuring Proactive Threshold Monitoring
- Scheduling IP SLAs Operations
- Displaying Statistics for IP SLAs
- Troubleshooting Tips
Configuring an IP SLAs Responder
DETAILED STEPS
Configuring an IP SLAs Video Profile
DETAILED STEPS
Configuring Proactive Threshold Monitoring
Perform this task to configure thresholds and reactive triggering for generating traps or starting another operation.
DETAILED STEPS
Scheduling IP SLAs Operations
- ip sla schedule operation-number [life {forever | seconds}] [start-time {hh : mm[: ss] [month day | day month] | pending | now | after hh : mm : ss}] [ageout seconds] [recurring]
- ip sla group schedule group-operation-number operation-id-numbers schedule-period schedule-period-range [ageout seconds] [frequency group-operation-frequency] [life{forever | seconds}] [start-time{hh:mm[:ss] [month day | day month] | pending | now | after hh:mm:ss}]
DETAILED STEPS
Displaying Statistics for IP SLAs
DETAILED STEPS
Troubleshooting Tips
- If the IP SLAs operation is not running and generating statistics, add the verify-data command to the configuration of the operation (while configuring in IP SLA configuration mode) to enable data verification. When enabled, each operation response is checked for corruption. Use the verify-data command with caution during normal operations because it generates unnecessary overhead.
- Use the debugipsla trace and debug ip sla error commands to help troubleshoot issues with an IP SLAs operation.
Configuration Examples for IP SLAs Video Operations
- Example: Basic IP SLAs Video Profile for Cisco TelePresence 1080P Traffic
- Example: Basic IP SLAs Video Profile for IP Television Traffic
- Example: Basic IP SLAs Video Profile for IP Surveillance Camera Traffic
Example: Basic IP SLAs Video Profile for Cisco TelePresence 1080P Traffic
IP SLAs Infrastructure Engine-III Entry number: 600 Owner: Tag: Operation timeout (milliseconds): 5000 Type of operation to perform: video Video profile name: TELEPRESENCE Target address/Source address: 10.10.10.1/10.10.10.2 Target port/Source port: 1/1 Vrf Name: Control Packets: enabled Schedule: Operation frequency (seconds): 60 (not considered if randomly scheduled) Next Scheduled Start Time: Pending trigger Group Scheduled : FALSE Randomly Scheduled : FALSE Life (seconds): 3600 Entry Ageout (seconds): never Recurring (Starting Everyday): FALSE Status of entry (SNMP RowStatus): notInService Threshold (milliseconds): 5000 Distribution Statistics: Number of statistic hours kept: 2 Number of statistic distribution buckets kept: 1 Statistic distribution interval (milliseconds): 20 Enhanced History:
Example: Basic IP SLAs Video Profile for IP Television Traffic
IP SLAs Infrastructure Engine-III Entry number: 700 Owner: Tag: Operation timeout (milliseconds): 5000 Type of operation to perform: video Video profile name: IPTV Target address/Source address: 10.10.10.3/10.10.10.4 Target port/Source port: 1/1 Vrf Name: Control Packets: enabled Schedule: Operation frequency (seconds): 60 (not considered if randomly scheduled) Next Scheduled Start Time: Pending trigger Group Scheduled : FALSE Randomly Scheduled : FALSE Life (seconds): 3600 Entry Ageout (seconds): never Recurring (Starting Everyday): FALSE Status of entry (SNMP RowStatus): notInService Threshold (milliseconds): 5000 Distribution Statistics: Number of statistic hours kept: 2 Number of statistic distribution buckets kept: 1 Statistic distribution interval (milliseconds): 20 Enhanced History:
Example: Basic IP SLAs Video Profile for IP Surveillance Camera Traffic
IP SLAs Infrastructure Engine-III Entry number: 800 Owner: Tag: Operation timeout (milliseconds): 5000 Type of operation to perform: video Video profile name: IPVSC Target address/Source address: 10.10.10.5/10.10.10.6 Target port/Source port: 1/1 Vrf Name: Control Packets: enabled Schedule: Operation frequency (seconds): 60 (not considered if randomly scheduled) Next Scheduled Start Time: Pending trigger Group Scheduled : FALSE Randomly Scheduled : FALSE Life (seconds): 3600 Entry Ageout (seconds): never Recurring (Starting Everyday): FALSE Status of entry (SNMP RowStatus): notInService Threshold (milliseconds): 5000 Distribution Statistics: Number of statistic hours kept: 2 Number of statistic distribution buckets kept: 1 Statistic distribution interval (milliseconds): 20 Enhanced History:
Additional References
MIBs
Technical Assistance
Description | Link |
---|---|
The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password. |
Feature Information for IP SLAs Video Operations
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Table 1 | Feature Information for IP SLAs Video Operations |
Feature Name | Releases | Feature Information |
---|---|---|
IP SLAs Video Operations |
12.2(58)SE |
Analyzes one-way delay, one-way packet loss, one-way jitter, and connectivity in IPv4 networks that carry video traffic. In Cisco IOS 12.2(58)SE, this feature is supported on only Cisco Catalyst 3750, 3750-E, 3750-X, 3650, 3650-E, and 3650-X Series switches. The following commands were introduced or modified: duration (IP SLA video), frequency (IP SLA video), history distributions-of-statistics-kept, history enhanced, history hours-of-statistics-kept, history statistics-distribution-interval, owner, show ip sla application, show ip sla configuration, show ip sla statistics, show ip sla statistics aggregated, tag, threshold (IP SLA video), timeout (IP SLA video), video, vrf. |
Cisco and the Cisco Logo are trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and other countries. A listing of Cisco's trademarks can be found at www.cisco.com/go/trademarks. Third party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1005R)
Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.