Providing the required quality of service (QoS) to applications on a wide-area access network consistently and reliably is increasingly becoming a challenge. Cisco® Bandwidth Quality Manager (BQM) is a network application congestion-management tool that provides outstanding visibility and analysis of traffic, bandwidth, and QoS on IP access networks. Data center LANs are upgrading from 100 Mbps to 1 Gbps and beyond, but the speed of branch and data center access links has not kept pace. Even brief periods of congestion at the speed mismatch points result in dynamic congestion, affecting applications. Cisco BQM uses microvisibility to detect dynamic congestion and estimate the service level for traffic and the bandwidth needed to meet QoS objectives.
Cisco BQM software runs on an appliance with gigabit-speed traffic monitoring ports. It is typically deployed at the data center or other potential traffic aggregation points, and it monitors every packet passively by spanning or tapping the Ethernet data links. All analysis and configuration functions are delivered though an advanced, user-friendly Web interface, with additional support for Secure Shell (SSH) Protocol and Telnet access to an intuitive command-line interface (CLI).
Tables 1 and 2 summarize Cisco BQM functions and business benefits.
Table 1. Cisco BQM Functions
Function
Description
Traffic insight
Cisco BQM traffic insight provides a millisecond-level view and real-time analysis of the use of network resources to support the network application environment. Cisco BQM traffic insight identifies traffic microbursts of programmable duration from 5 milliseconds (ms) to 1 second, top talkers, listeners, and conversations and reports average link use, packet rate, and packet size distribution.
Congestion analysis
Cisco BQM computes the expected service level (ESL) in terms of loss and delay for each packet across hundreds of configured classes or site interfaces. The Cisco BQM congestion indicator condenses this information into a single number, which reflects the performance of each site relative to the network performance objectives.
Event analysis
Cisco BQM provides event tracing wherein a rolling real-time trace is always kept. If any congestion event is detected, a 10-second section of the trace around the event is recorded for later analysis. Cisco BQM provides analysis capabilities at the site, class, application, conversation, or even packet level.
Bandwidth sizing
Cisco BQM recommendations give clear, plain-language guidelines on class and link bandwidth requirements, queue-limit sizing, and policy settings. Each recommendation takes into account the amount of dynamic congestion that applications or classes can tolerate.
Quality alarms
Cisco BQM detection and analysis of congestion is made available to external systems through fully configurable Simple Network Management Protocol (SNMP) traps, syslog streaming, and e-mail alerts.
Table 2. Cisco BQM Business Benefits
Benefit
Description
Increases network application uptime
Cisco BQM helps network managers ensure that network applications are performing by protecting against network congestion in converged WANs. Cisco BQM monitors, analyzes, and recommends corrective actions against network application congestion.
Reduces application downtime and troubleshooting expense
Through its unique ability to monitor and analyze traffic at the micro level, Cisco BQM diagnoses traffic-induced performance problems that many competing tools miss or misdiagnose.
Mitigates risk of making expensive bandwidth upgrade decisions
Cisco BQM determines whether a bandwidth upgrade or QoS or traffic management policy is the preferred action based on its unique algorithms. These algorithms take into account whether an upgrade action may result in no improvement to network quality.
Builds on investment made in Cisco QoS infrastructure
Cisco BQM models Cisco router QoS mechanisms, so that network managers can unleash the power of QoS without having to deploy yet another packet-processing appliance.
Availability
Cisco BQM 3.2 will be available June 18, 2007. Customers can order these products and fully attached services through their normal sales channels beginning June 1, 2007.
Ordering Requirements
Cisco BQM 3.2 is targeted for remote sites and is offered on the Cisco Application Deployment Engine (ADE). Cisco ADE is a high-performance platform for Cisco network management applications. Customers can select the Cisco ADE platform that meets their application needs.
Table 3 provides part numbers for ordering. Please note that Cisco BQM 3.2 features a base software license for monitoring 10 sites. Additional bandwidth processing licenses can be procured based on the amount of bandwidth that needs to be monitored. Cisco BQM 3.2 software is supported on the Cisco ADE 1010 series and Cisco ADE 2120 series. The Cisco ADE 1010 series is the entry-level product, which provides for a single Gigabit Ethernet monitoring port. The Cisco ADE 2120 series can be ordered with either fixed ports of 10/100/1000Mbps or in a modular version. The modular version of the Cisco ADE 2120 series can be configured with combinations of 1000BaseSX or LH (optical) Small Form-Factor Pluggables (SFPs) or 1000BaseT (electrical) SFPs. Please refer to the Cisco BQM Q&A document for additional ordering details.
Table 3. Ordering Information
Part Number
Description
CBQME-3.2-SW10-K9
Cisco BQM Base Software licensed for up to 10 Mbps of Bandwidth Monitored and up to 10 remote sites
CBQME-3.2-10MLC
Cisco BQM 10 Mbps Bandwidth Processing License
CBQME-3.2-50MLC
Cisco BQM 50 Mbps Bandwidth Processing License
CBQME-3.2-100MLC
Cisco BQM 100 Mbps Bandwidth Processing License
CBQME-3.2-500MLC
Cisco BQM 500 Mbps Bandwidth Processing License
CBQME-3.2-1GLC
Cisco BQM 1 Gbps Bandwidth Processing License
CBQME-3.2-10-LC
Cisco BQM License - for additional 10 sites
CADE-2120-K9
Cisco Application Deployment Engine 2120 series
CADE-1010-K9
Cisco Application Deployment Engine 1010 series
CBQME-PCI-4
Cisco BQM Accelerator card - fixed PCI card with 4 port 10/100/1000 Mbps (available with ADE 2120 only)
CBQME-PCI-4M
Cisco BQM Accelerator card - Modular PCI card requires purchase of SFPs (available with ADE 2120 only)
CBQME-PCI-2
Cisco BQM Engine - PCI card with 2 active ports 10/100/1000 Mbps; 2 SFPs can be added (available with Cisco ADE 2120 only)
