Cisco Catalyst 6500 Series and Cisco 7600 Series Network Analysis Module 4.2
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Updated:April 22, 2010
Q. What is the Cisco
® 6500 Series and Cisco 7600 Series Network Analysis Module (NAM) and what does it do?
A. The Cisco Catalyst 6500 Series and Cisco 7600 Series NAM is an integrated performance management solution that provides visibility into application and network performance to help ensure the consistent and efficient delivery of applications and services to end users. Its unique design combines a rich set of embedded data collection and analysis capabilities with a remotely accessible, web-based management console, all of which reside on a single blade that is installed into the Cisco Catalyst 6500 Series Switch or the Cisco 7600 Series Router. The Cisco NAM includes an embedded, web-based Traffic Analyzer GUI that provides quick access to the configuration menus and easy-to-read reports on voice, video, and TCP-based traffic.
Q. What are the key features and benefits of the Cisco NAM?
A. The key features and benefits of the Cisco NAM are provided in Table 1.
Table 1. Key Features and Benefits of the Cisco NAM
Performance Assurance Integrated in the Switch/Router
Deployed in the Cisco Catalyst 6500 Series Switch and the Cisco 7600 Router, the Cisco NAM provides greater investment protection, lower total cost of ownership, and reduced footprint to save premium rack space.
Intelligent Application Performance (IAP)
Analyzes TCP-based application packets as they travel from the client through the network to the data center and out again, providing insight into network round-trip time, server response time, data transfer time, transaction time, and so on, to monitor application performance.
Advanced Voice Quality Monitoring
Reports Mean Opinion Score (MOS) along with key performance metrics once every minute based on 3-second data points for each active Real Time Protocol (RTP) stream. Combined voice quality monitoring and real-time troubleshooting help ensure delivery of committed service levels to the end user.
Visibility into WAN-Optimized Networks
Measures application response time, WAN bandwidth usage, LAN/WAN data throughput, and so on, to effectively use Cisco Wide Area Application Services (WAAS) for improving application performance.
Video Performance Analytics
Analyzes video packet streams and provides visibility into key network performance indicators to manage the quality of experience for the end user.
Comprehensive Flow-based Monitoring
Automatically identifies hundreds of protocols and provides real-time and historical performance reports on hosts, conversations, and applications using critical network resources.
Visibility into Nexus 1000V Deployments
Simplifies the operational manageability of Cisco Nexus 1000V switch environments.
LAN and WAN Monitoring in One Solution
Provides visibility into traffic from local and remote switches and routers for comprehensive traffic monitoring.
Web-based Captures for Deep, Insightful Data Analysis
Captures the packets to help resolve acute problems before they affect users. Captures can be performed using a web browser from any desktop, and the decodes can be viewed through the Traffic Analyzer GUI while the data is still being captured. Extensive capture features, including trigger-based captures, decodes, filters, and a capture analysis toolset, help to quickly pinpoint and resolve problem areas.
Visibility into Virtual Switch System (VSS) Deployments
Monitors traffic on all switch ports of both virtual switches in a VSS 1440 environment. It reduces the management overhead and simplifies monitoring of application performance, network traffic, and switch health, thereby improving the overall operational efficiency.
Anytime, Anywhere Access
Includes an embedded Traffic Analyzer web interface that can be accessed from any desktop, eliminating the need to send personnel to remote sites or haul large amounts of data over WAN links to the central site.
Pre- and Postdeployment Metrics to Quantify Business Changes
Provides valuable "before and after" traffic analytics to help plan for and verify changes in network resources, such as new application rollouts, WAN optimization, server consolidation, segmenting the network, and deploying voice over IP (VoIP) and video.
Facilitates the export of data to other tools and devices that build additional value on top of NAM. For example, NAM can export application response time information to NetQoS SuperAgent for consolidated networkwide performance reporting.
Cisco NAM can be deployed in blade form factor in Cisco Catalyst 6500 Series Switches, Cisco 7600 Series Routers, and Cisco Integrated Services Routers as multigigabit appliances, and as virtual service blades residing directly on WAAS devices or on the Nexus 1010 Virtual Service Appliance. The complement of physical and virtual blades and of appliances allows NAM instrumentation to be broadly deployed in the network for comprehensive performance monitoring.
Q. What are the business benefits of deploying Cisco NAM?
A. Table 2 provides an overview of the business benefits that the NAM offers.
Table 2. Business Benefits of Deploying Cisco NAM
Gain Comprehensive Visibility into Network Services and Applications
Help ensure consistent and efficient delivery of applications and services.
The visibility provided allows effective use of control and optimization mechanisms such as quality of service (QoS) and Cisco WAAS to improve application performance.
Enhance Service Levels Delivered to the End User
Preempt performance issues with threshold-based proactive alerts. Reduce downtime and failures.
Increase Operational Efficiency
Accelerate problem isolation and minimize the amount of time IT dedicates to constantly troubleshooting problems.
Enhance productivity with remote management.
Maximize the Value of IT Investment
Optimize the use of network resources.
Q. What is the difference between NAM-1 and NAM-2?
A. NAM-1 and NAM-2 share the same hardware architecture and software applications, but differ in the following ways:
• NAM-2 has an additional accelerator card that provides extra high packet processing performance to monitor gigabit bandwidth.
• NAM-2 includes two data ports to support Switched Port Analyzer (SPAN)/VLAN access control list (VACL) traffic, whereas NAM-1 includes one data port only. With the second data port, the NAM-2 can receive two SPAN sessions, two VACL-based captures, or one of each data source. The SPAN sessions, each consisting of multiple ports, VLANs, or EtherChannel connections, can be used independently or together. This feature allows users to view traffic on each side of a full-duplex trunk or to dedicate one data port for troubleshooting and the other data port for reporting.
• NAM-2 has a larger capture buffer than NAM-1. The buffer capacity of NAM-2 (WS-SVC-NAM-2-250S) is 500 MB and NAM-1 (WS-SVC-NAM-1-250S) is 200 MB.
Q. Is the NAM-1 upgradeable to NAM-2?
A. No. NAM-1 and NAM-2 have fixed configurations and cannot be transformed from one version to the other.
Q. What is the Cisco NAM Traffic Analyzer?
A. The Cisco NAM includes embedded Traffic Analyzer software that analyzes and stores the collected data using standards-based MIBs and extensions (Remote Monitoring [RMON], DiffServ Monitoring [DSMON], switch monitoring [SMON], Application Response Time [ART] monitoring, and VoIP monitoring). The Cisco NAM also hosts an embedded web server that presents the configuration menus and traffic reports to clients using a supported web browser. These reports provide visibility into voice, video, and data traffic.
Q. What supervisor operating systems does the Cisco NAM support?
A. The Cisco NAM is compatible with supervisors running Cisco Catalyst OS and Cisco IOS
® Software. Please refer to the Cisco NAM Release Notes for specific versions of the Catalyst OS and Cisco IOS Software supported on the NAM for the Cisco Catalyst 6500 Series Switches and for the Cisco 7600 Series Routers.
Q. Where is the Cisco NAM deployed in the network?
A. The Cisco NAM is deployed in the Cisco Catalyst 6500 Series at LAN aggregation points (for example, in the core or distribution layer) for proactive monitoring and quick troubleshooting; at service points (for example, in data centers, server farms, or Cisco Unified Communications Manager clusters) where performance is critical; and at critical access points. Also, the NAM can be deployed in Cisco 7600 Series Routers at WAN edges or in Catalyst 6500 Series Switches connected to WAN routers. When deployed at remote sites, the Cisco NAM uniquely allows users to perform remote troubleshooting and traffic analysis using the embedded web-based Traffic Analyzer without having to send personnel or to haul large amounts of data to the central site.
Q. In what release were the upgraded NAM-1 (WS-SVC-NAM-1-250S) and NAM-2 (WS-SVC-NAM-2-250S) first introduced?
A. The upgraded NAM-1 and NAM-2 were first introduced in NAM 3.6.1b.
Q. What do the upgraded NAMs offer?
A. The upgraded NAMs offer higher memory (DRAM) and larger onboard storage. The higher memory optimizes the performance of the NAM software. The disk drive upgrade offers larger capacity to permit the storage of more reports and captures.
Latest Release: NAM 4.2
Q. What features does NAM Software 4.2 offer?
A. Cisco NAM 4.2 offers the features described in Table 3.
Table 3. New Features in Cisco NAM 4.2
Visibility into Nexus 1000V Deployments
Extends the NAM into Cisco Nexus 1000V switch environments to simplify the operational manageability of Virtual Machine (VM) networks.
New Cisco Nexus 1000V NAM Virtual Service Blade (VSB)
Integrated with the Cisco Nexus 1010 Virtual Service Appliance, the NAM VSB reduces the network footprint and offers investment protection for Cisco Nexus 1010 customers. As a dedicated solution, it provides network and application performance visibility essential to addressing service delivery challenges in next-generation data centers.
Q. When is NAM Software 4.2 available?
A. Starting in April 2010 current Cisco NAM customers can download Cisco NAM 4.2 software from the Cisco.com Software Center at no charge using their Cisco SMARTnet
® contract access privileges. NAM 4.2 is available in May as part of NAM blade orders.
Q. Which NAM hardware platforms support NAM 4.2?
A. NAM 4.2 is supported on the hardware platforms listed in Table 4. The platforms marked by an asterisk (*) include memory configurations that optimize NAM 4.2 performance.
Table 4. NAM Hardware Platforms Supported with NAM 4.2
Hardware Part Number
Cisco NAM 2200 Series Appliances
Cisco Catalyst 6500 Series and Cisco 7600 Series NAM-1
WS-SVC-NAM-1 with MEM-C6KNAM-2GB=*
Cisco Catalyst 6500 Series and Cisco 7600 Series NAM-2
WS-SVC-NAM-2 with MEM-C6KNAM-2GB=*
Cisco Branch Routers Series NAM
Q. How do the NAM 4.2 features benefit Cisco Catalyst 6500 NAM users?
A. With NAM 4.2, the visibility of the Cisco Catalyst 6500 NAM is extended into the virtual networking layer to help network administrators successfully navigate operational manageability challenges in dynamic data centers. The Cisco Catalyst 6500 NAM can identify the applications running on the virtual network, how much application traffic each VM is placing on the network, and who is using the applications. This is especially valuable in supporting the migrations of physical servers to VMs. The Cisco NAM provides insight into the "before and after" of such a migration, helping to ensure that performance levels of business-critical applications are preserved. The Catalyst 6500 NAM can help users to:
• Analyze network usage behavior by host/VM and conversation to identify bottlenecks that may affect performance and availability
• Troubleshoot performance issues with extended visibility into VM-to-VM traffic, virtual interface statistics, and transaction response times
• Assess the impact on the network of changes such as VM migrations, dynamic resource allocations, and port profile updates
• Improve the efficiency of the virtual infrastructure and distributed application components with comprehensive traffic analysis
Q. What device does the Cisco Catalyst 6500 NAM monitor in the virtualized data center?
A. The Cisco Catalyst 6500 NAM can monitor traffic within the Cisco Nexus 1000V switch environment in addition to monitoring Cisco Catalyst 6500 traffic. The Cisco Nexus 1000V switch is a software switch on a server that delivers Cisco Virtual Network Link (VN-Link) services to VMs hosted on the server and includes two major components: the Virtual Ethernet Module (VEM) and the Virtual Supervisor Module (VSM), which manages the VEMs.
Q. What NAM data sources can be used to monitor traffic in the Cisco Nexus 1000V switch environment?
A. The Cisco Catalyst 6500 NAM monitors the Cisco Nexus 1000V using the Encapsulated Remote SPAN (ERSPAN) and NetFlow data sources (for more information about NAM data sources, please refer to Table 5 of this Q&A). The ERSPAN data source delivers network traffic to the NAM from specific ports or VLANs on the Cisco Nexus 1000V. The NAM uses this data to provide core traffic usage statistics (on applications, hosts, and conversations), IAP analytics, and QoS and VLAN monitoring statistics. The NetFlow data source delivers network traffic to NAM on select virtual and physical interfaces of the Cisco Nexus 1000V. The NAM consumes this data to generate core traffic usage and QoS monitoring reports. By offering a choice of data sources, the NAM allows network administrators to meet diverse and ever-changing traffic management needs in the virtualized data center.
Q. Where should I deploy the Cisco Catalyst 6500 NAM to obtain visibility into the virtualized data center?
A. The Cisco Catalyst 6500 NAM can be deployed in the core, distribution, or access layers of the data center to monitor traffic from the physical and virtual resources of the Cisco Nexus 1000V switch. A NAM deployed in an End-of Row (EoR) Cisco Catalyst 6500 Switch in the access layer can offer superior visibility into this traffic in high-density server environments.
Q. Can the Cisco Catalyst 6500 NAM monitor VMware vMotion?
A. VMware vMotion is a technology that allows server administrators to perform live migrations of virtual machines with zero downtime. Typically, this operation is used both to facilitate optimization of the virtual computing infrastructure and to perform hardware maintenance without scheduling downtime or disrupting business operations, thereby improving IT service levels. Deploying the Cisco Nexus 1000V along with a Cisco Catalyst 6500 NAM, the VMs can be monitored uninterrupted by vMotion operations. Thus, application traffic destined for or originating from a specific VM can be continuously monitored to help ensure that application response times are preserved during VM migrations. And, in cases where response times have increased, the NAM allows network administrators to analyze the impact and instigate a fast, data-driven corrective response.
Q. When would I purchase a Cisco Catalyst 6500 NAM versus a Cisco Nexus 1000V NAM VSB?
A. The Cisco Catalyst 6500 NAM is a hardware module integrated in the Cisco Catalyst 6500 that provides visibility into both physical and virtual networks. It comes with a feature set and level of performance purpose-built to perform high-throughput monitoring and troubleshooting in the campus or data center. The Cisco Nexus 1000V NAM VSB is a software module integrated in the Cisco Nexus 1010 Virtual Service Appliance. The Cisco Nexus 1000V NAM VSB comes with a feature set and level of performance specifically targeted to perform monitoring and troubleshooting in the Cisco Nexus 1000V environment. The Cisco NAM VSB is a perfect fit for customers who are deploying the Cisco Nexus 1010, offering both ease of deployment and investment value. Those customers who have Cisco Catalyst 6500s and who may want to monitor more than the Cisco Nexus 1000V environment, who require higher overall performance, or who perform extensive captures and decodes will want to consider the Cisco Catalyst 6500 NAM. Further, the Catalyst 6500 NAM can monitor switch port usage and associated application usage on the Cisco Catalyst 6500 in addition to the Cisco Nexus 1000V when a Cisco Catalyst 6500 is deployed in the data center in VSS mode for high availability considerations.
Q. How does the Cisco NAM work?
A. The Cisco NAM collects packets or flows (NetFlow Data Export [NDE]) being sent to it from the switch or router. The NAM parses the packets and extracts data to populate standards-based MIBs included in the NAM such as RMON/RMON2 and RMON extensions. The MIBs provide valuable traffic information on voice, video, and data traffic, VLANs, DiffServ configurations, hosts, conversation pairs, application usage, and application response times. This information is presented in the NAM's Traffic Analyzer GUI in easy-to-read real-time and historical reports or can be accessed using a standards-based centralized Simple Network Management Protocol (SNMP) console to build additional value for enterprisewide performance assurance and reporting.
The packets that the Cisco NAM collects are defined by the user's selecting one or more data sources. Data sources, which are features of the switch, router, or WAAS device, are described in Table 5 and include SPAN, RSPAN, ERSPAN, VACL capture, NDE, and WAAS Flow Agent. The Cisco NAM has independent backplane interfaces to collect SPAN/VACL traffic and NDE/WAAS. The NAM also has a communications interface with the supervisor and uses supervisor MIBs to provide information on port utilization (mini-RMON) and VLAN utilization (SMON).
Table 5. Cisco Catalyst 6500 Series and Cisco 7600 Series NAM Data Sources
SPAN, RSPAN, and ERSPAN
Using the SPAN, RSPAN, and ERSPAN capabilities of Cisco Catalyst 6500 Series Switches, traffic from ports, VLANs, and EtherChannel links can be mirrored to the NAM. The NAM collects statistics on all layers of network traffic spanned to it. RSPAN allows traffic to be collected from other RSPAN-enabled devices in the same VLAN Trunk Protocol (VTP) domain. ERSPAN allows traffic to be sent to the NAM using encapsulated GRE tunnels from a Layer 3 network.
The NAM uses VACLs to capture or "filter" selected VLANs and WAN traffic (on Cisco IOS devices only) to the NAM ports. Additional filtering rules can also be applied to target specific data flows. The NAM must be specified as the capture destination for VACL entries when configuring the local supervisor.
NetFlow Data Export records offer an aggregate view of the network traffic. When enabled on the switch, the NetFlow data source becomes available on the Cisco NAM without the need to create any SPAN sessions. In addition, the NAM can receive NDE from remote devices for analysis.
WAAS Flow Agent
The NAM gathers WAAS Flow Agent data for optimized and pass-through traffic to provide end-to-end application performance visibility in a Cisco WAAS environment. The Flow Agent data allows NAM to measure application response time, transaction time, bandwidth usage, and LAN/WAN data throughput to accurately quantify the impact of Cisco WAAS optimizations.
Q. How does the Cisco NAM gain visibility into traffic from other switches/routers?
A. The LAN or WAN traffic from other devices can be directed to the NAM for analysis using RSPAN, ERSPAN, or NDE.
Q. How does the Cisco NAM gain visibility into WAN traffic?
A. The NAM gains visibility into WAN traffic using VACL capture for WAN interfaces and NDE. VACL-based captures can be used (in supervisors running Cisco IOS Software in native mode) to monitor traffic from WAN interfaces. NDE from local and remote devices can be used to monitor WAN interfaces and provide application-level visibility into WAN segments.
Q. What is VACL capture and how does the Cisco NAM use it?
A. VACL capture is a data source that uses SPAN and fulfills similar functions. VACLs can be used to capture or "filter" selected VLANs and WAN traffic (with Cisco IOS Software). In Cisco IOS Software 12.2(18)SXF or later, VACLs can also be applied to WAN interfaces.
Q. How does the Cisco NAM use NetFlow?
A. When enabled on the switch, NetFlow data can be sent directly to the Cisco NAM without creating any SPAN sessions. All traffic that is Layer 3 switched on the policy feature card (PFC) and that is NetFlow switched on the Multilayer Switch Feature Card (MSFC) is available as NDE for monitoring. NetFlow can also be enabled on interfaces of remote devices and sent to the NAM for analysis.
The Cisco NAM supports monitoring of both SPAN and NetFlow data sources using independent backplane interfaces. These two data sources complement each other to provide a powerful and comprehensive monitoring solution. NetFlow can be used to monitor the traffic at an aggregate level to provide host, conversation, and application statistics, and for a deeper examination, SPAN can be used to send specific traffic of interest to the NAM. Also, NetFlow can be used to obtain visibility into traffic where SPAN is not available (WAN interfaces, remote router interfaces, and so on).
Q. Can the Cisco NAM collect NetFlow from remote WAN routers?
A. Yes. The Cisco NAM can collect and analyze NDE from remote devices including WAN routers. This feature is helpful in analyzing traffic on a WAN router connected to the Catalyst 6500 Series Switch or from remote WAN routers where ample bandwidth is available to send NDE.
Q. Does the Cisco NAM require a separate NetFlow data collector for monitoring?
A. No. The NAM collects and consumes NetFlow data for performance monitoring purposes.
Q. What versions of NetFlow does the Cisco Catalyst 6500 Series and Cisco 7600 Series NAM support?
A. The NAM supports versions 1, 5, 6, 7, 8, and 9.
Q. What release of Cisco IOS Software is required to support the Cisco Catalyst 6500 Series and Cisco 7600 Series NAM?
A. The Cisco NAM requires any feature license in Cisco IOS Software Release 12.2(18)SXF (or later) or Cisco Catalyst Operating System 8.2(1) (or later). Please refer to the Cisco NAM Release Notes for extensive information on the required system software.
Q. How is the Cisco NAM Traffic Analyzer secured?
A. The Cisco NAM Traffic Analyzer can be secured with up to 256-bit encryption. The NAM also supports role-based user authorization and authentication locally or using TACACS+.
Q. Can NAM-1 or NAM-2 be deployed in fabric-enabled Cisco Catalyst 6500 Switches or Cisco 7600 Series without affecting switch performance?
A. Yes. NAM-1 and NAM-2 support full fabric (crossbar) connectivity and can be deployed in a fabric-enabled chassis with no impact on switching performance.
Q. Can multiple Cisco NAMs be installed in a Cisco Catalyst 6500 Series or Cisco 7600 Series chassis?
A. Yes. Multiple Cisco NAMs can be installed in a single chassis.
Q. Can the Cisco NAM be installed in a Cisco Catalyst 6500 Series or Cisco 7600 Series chassis with other services modules (for example, the Firewall Services Module [FWSM])?
A. Yes. The Cisco NAM can be installed with other services modules.
Q. Are there any ports or network interfaces on the Cisco NAM?
Q. Can multiple VLANs be spanned to the Cisco NAM?
A. Yes. The NAM is fully compatible with the SMON MIB and supports the monitoring of multiple VLANs.
Q. Does the Cisco NAM support supervisor failover?
Q. If a switch chassis is upgraded, must a new Cisco NAM be purchased?
A. No. The Cisco NAM is fully functional in any of the modular Cisco Catalyst 6500 or 6000 Series chassis and Cisco 7600 Series chassis.
Q. Does the NAM support Virtual Switch System on the Catalyst 6500?
A. Yes, all Catalyst 6500 NAMs and NAM Appliances support VSS.
Q. Which NAM and Cisco IOS Software releases support VSS?
A. On the Catalyst 6500 NAM-1 and NAM-2, VSS is supported in NAM 3.6.1a or later with Cisco IOS Software Release 12.2(33)SXH(1) or later. On the Catalyst 6500 NAM-1-250S and NAM-2-250S, VSS is supported in NAM 3.6.1b or later with Cisco IOS Software Release 12.2(33)SXH(1) or later. On the NAM Appliances, VSS is supported in NAM 4.0 or later with Cisco IOS Software Release 12.2(33)SXH(1) or later.
Q. Are there specific capabilities that NAM provides in a VSS environment that are distinct from the capabilities provided in a non-VSS environment?
A. Yes, there are three key differentiators:
• Monitoring port statistics on both switches using one NAM. The NAM can provide mini-RMON statistics on both switches and identifies these statistics by chassis, slot, and port. In this way, a complete view of Layer 2 traffic utilization can be obtained to assist in quickly identifying potential bottlenecks.
• Using SPAN on one NAM to obtain visibility into traffic on both virtual switches. Typically, RSPAN or NetFlow would need to be used to obtain visibility into an adjacent switch.
• Monitoring the health of both switches using a single NAM.
Q. What protocols does the Cisco NAM monitor?
A. The Cisco NAM monitors several hundred unique protocols, including those defined in RFC 2896, and several Cisco proprietary protocols. In addition, the NAM can automatically detect unknown protocols and offers users the flexibility to customize the protocol directory to meet their specific requirements. Examples of protocols supported by the Cisco NAM for monitoring follow:
• TCP and User Datagram Protocol (UDP) over IP including IPv6
• HTTP and HTTPS
• VoIP including Skinny Client Control Protocol (SCCP), RTP/Real-Time Control Protocol (RTCP), Media Gateway Control Protocol (MGCP), and Session Initiation Protocol (SIP)
• SigTran and Mobile IP protocols including GPRS Tunneling Protocol
• Storage Area Network (SAN) protocols including Fibre Channel over TCP/IP
• AppleTalk, DECnet, Novell, Microsoft
• Database protocols, including Oracle and Sybase
• Peer-to-peer protocols such as Gnutella, Fasttrack, and winmix
• Bridge and router protocols
• Cisco proprietary protocols
• Unknown protocols by TCP/UDP ports, Remote Procedure Call (RPC) program numbers, and so on
Q. Can packet captures be saved and, if so, where?
A. Yes. The Cisco NAM offers two options to save capture data. Captures that have been stored in the NAM's buffer can be saved to the NAM's local hard drive for real-time analysis or analysis at a later date. In addition, with Cisco NAM 3.5 or later, captures can be saved directly to a remote Network File Server (NFS) or Small Computer System Interface over IP (iSCSI)-supported device. Saving captures on a remote storage device allows the user to capture very large amounts of raw data, which can then be analyzed remotely by NAM.
Q. Does the Cisco NAM perform historical traffic analysis?
A. Yes, the Cisco NAM Traffic Analyzer can display, store, and retrieve historical statistics on selected network traffic for up to 100 days. The export of historical reports can be scheduled or exported on demand. Reports can be sent by email or FTP, and export formats can include comma-separated value (CSV), XML, PDF, and HTML
Q. Does Cisco NAM support voice monitoring for Cisco VoIP deployments only?
A. No. Cisco NAM monitors Real-Time Monitoring Protocol and thus, by extension, can provide reporting on any VoIP protocol that runs on top of RTP, a Layer 4 protocol.
Q. Which VoIP signaling protocols does the Cisco NAM support?
A. Cisco NAM supports a breadth of standards-based VoIP signaling protocols, namely, SCCP, SIP, MGCP, and H.323.
Q. What are the key performance indicators for monitoring voice?
A. Cisco NAM offers real-time voice quality monitoring using standards-based MOS and key performance indicators such as jitter and packet loss. It calculates MOS based on ITU-T G.107 recommendations.
Q. Can I identify the phones affected by voice quality degradation?
A. Yes. Cisco NAM allows the administrator to pinpoint the individual RTP stream experiencing voice quality degradation. By correlating the RTP and signaling streams, Cisco NAM can report the phone numbers and alias for each endpoint.
Q. What Cisco Unified Communications Management Solutions support NAM?
A. The solutions are Cisco Unified Service Monitor and Cisco Unified Operations Manager.
Q. What Cisco Unified Service Monitor and Cisco Unified Operations Manager versions first support NAM 4.x? Are these versions available today? If not, when will they be available?
A. The versions are Cisco Unified Service Monitor 2.2 and Cisco Unified Operations Manager 2.2. They are available as of August 2009.
Q. How do Cisco Unified Service Monitor and Cisco Unified Operations Manager support NAM?
A. Cisco Unified Service Monitor collects voice metrics from multiple NAMs to provide enterprisewide visibility into voice quality. Cisco Unified Service Monitor generates alerts on the voice quality degradation that is reported by Cisco Unified Operations Manager. Based on these alerts, Cisco Unified Operations Manager allows the user to navigate into NAM to glean near real-time views of both voice and network performance to perform rapid troubleshooting.
Q. What is the Cisco NAM IAP feature?
A. The NAM intelligent application performance feature offers comprehensive performance measurements for TCP-based applications to accurately characterize the end-user experience. This NAM 4.x feature offers a number of useful application performance indicators to facilitate faster problem identification. For example, the source of network latency affecting the end-user experience can be isolated by analyzing network delay metrics, namely client network delay, server network delay, and network delay. Similarly, server resource issues can be identified by network metrics such as application delay and server response time. In addition, the administrator can configure thresholds on these metrics to proactively detect performance degradations before they affect end users.
Q. How does Cisco NAM support Cisco Wide Area Application Services?
A. Cisco NAM uses the built-in instrumentation of the Cisco Wide-Area Application Engine devices as a data source to gather information on the optimized traffic to provide end-to-end application performance visibility in a Cisco WAAS environment. It measures application response time, transaction time, bandwidth usage, LAN/WAN data, and so on to provide end-to-end application performance metrics, accurately quantifying the impact of WAAS optimization and helping to validate ongoing optimization improvements. NAM is also able to identify the applications that would benefit the most from deploying Cisco WAAS. Analyzing response time data over a period of time, the administrator can identify the applications where optimization can result in a material increase in available bandwidth.
Q. Does Cisco NAM include an API to allow third-party reporting applications to use NAM as a source of data?
A. Yes, the Cisco NAM includes mechanisms, such as comma-separated value (CSV)/HTTP, to enable third-party reporting applications to collect data for networkwide reporting, trending, baselining, and capacity planning. The third-party applications can retrieve performance and monitoring data such as IAP, voice/video, traffic usage, and packet captures to deliver added and complementary value to NAM.
Q. How can a third party apply for approval to use the Cisco NAM CSV/HTTP API for integration?
A. A third-party can enroll in the Cisco Developer Network at
http://www.cisco.com/go/cdn. During the enrollment process, the third-party must select Network and Service Management as the solution technology and Cisco NAM as the network management product for integration. Once approved and the nondisclosure agreement (NDA) and NAM developer license agreement signed, the third-party will receive the API for integration.
Q. Are there currently third parties who have joined this program? How can a list of these vendors be obtained?
A. Yes. Today, reporting applications from third-parties such as NetQoS, Compuware, and others offer support for NAM. These reporting applications complement the NAM by using its rich metrics to build end-to-end views of application usage and performance and also to streamline the number of collection points in the network. A list of third-parties supporting NAM can be found at the Cisco Developer Network URL
Q. What are the part numbers for the Cisco Catalyst 6500 Series and Cisco 7600 Series NAM?
A. Table 6 lists the part numbers for the NAMs.
Table 6. Cisco Catalyst 6500 Series and Cisco 7600 Series NAM Part Numbers
Cisco Part Number
Cisco Catalyst 6500 Series and Cisco 7600 Series Network Analysis Module-1 (Spare)
Cisco Catalyst 6500 Series and Cisco 7600 Series Network Analysis Module-2 (Spare)
Field-installable Memory Upgrade Kit for WS-SVC-NAM-1 and WS-SVC-NAM-2
Cisco Catalyst 6500 Series and Cisco 7600 Series Network Analysis Module Software 4.2
Q. How can the Cisco NAM Traffic Analyzer software be obtained?
A. The NAM software can be obtained in one of two ways. To obtain the latest NAM software with your new hardware order, order SC-SVC-NAM-4.2 when ordering the NAM hardware. The software will then be delivered preloaded on the hardware. If you already own the hardware, download the latest software from the Cisco.com Software Center using your SMARTnet access privileges.
Q. Must Cisco NAM software be downloaded from the Cisco.com Software Center when first deploying a Cisco Catalyst 6500 NAM?
A. No. Cisco NAM comes with the latest NAM software release. There is no need to download the software when first deploying the Cisco Catalyst 6500 NAM.
Q. How do I obtain access to a new Cisco NAM software release?
A. Customers who have purchased SMARTnet for their NAM are entitled to download new software releases from the Cisco.com Software Center.
Q. Do the NAM-1 and NAM-2 have their own software image? Where can I find it?
A. NAM-1 and NAM-2 share a common software image, which is loaded on the Cisco NAM during its manufacture. The image is also available in the Software Center on Cisco.com. When new releases are available, the NAM can be upgraded using FTP. For details regarding compatibility, download location, and so on, please see
Q. How is the Cisco NAM Traffic Analyzer application obtained? Is it included in the price of the NAM?
A. The Cisco NAM Traffic Analyzer application is embedded in the NAM and is included in the NAM's price.
Q. What is required to deploy the Cisco NAM solution?
A. The following are required to deploy the NAM solution including the NAM Traffic Analyzer:
• Cisco Catalyst 6500 Series or Cisco 7600 Series Supervisor Engine running Cisco Catalyst OS or Cisco IOS Software
• NAM running software version 4.0 or later (prior software versions are in the end-of-sale or end-of-life cycle)
• Web browser running Microsoft Internet Explorer 6.0 (with Service Pack 2), Internet Explorer 7.0, Firefox 2.0, or Firefox 3.0
Q. Does the Cisco NAM complement Cisco security solutions?
A. Yes. The Cisco NAM is also complementary to traditional Cisco security devices. Once an intrusion is seen, the NAM can analyze the details of what is going on. The NAM also helps to deploy inline security devices by constantly measuring VLAN throughput so that the inline device is sized correctly. And, as the network grows and traffic increases, the NAM can track resource usage for future capacity planning. Also, because the NAM can analyze traffic on either side of the inline device, it provides a useful way to gauge the effectiveness of these tools and to troubleshoot potential connectivity problems as they arise.
Q. What Cisco NAM training options are available?
A. The Cisco NAM training is available through instructor-led training. This training can be conducted as a standalone module or included with training modules on other Cisco Catalyst 6500 services blades.
Q. Where is additional information about the Cisco NAM found?