Monitoring the Network

Article (17)

Test the interoperability of your LAN's switches
Learn how testing can ensure different switches on a LAN interoperate in this tutorial.
Monitoring your network with Vista
Learn how to monitor networks in Windows Vista.
Content filtering Day One - Taming the wild Web
Filtering incoming web traffic sounds simple, but as Lisa Phifer explains doing so effectively requires skill and knowledge of some complex standalone products.
Network visualization, automation: At odds?
Visualization is a powerful tool. But in the context of network management, the prevalence of graphs may indicate that your network management system (NMS) is not ready to meet the requirements of autonomic network performance. Why so? Loki Jorgenson explains in this tip.
Network analysis tool gives managers a 'heads up'
NetScout recently rolled out a new network analysis tool that understands network behavior and presents managers with information when that behavior changes. UPS has been testing it out.
Monitoring service gives companies
An Atlanta company turned to the Logix Resource Group for network monitoring and reporting after several frightening "bumps in the night."
Solution opens up OpenView
A Bermuda company boosts visibility into the network with InteQ managed services. Meanwhile, InteQ adds a new service to enhance HP OpenView.
Could March Madness cripple the network?
CBS Sports this week will offer all games of the 2006 NCAA basketball tournament online as streaming video. But if end-users tune in, the network could drop out.
Monitoring goes out-of-band
A new data access switch from Gigamon boosts the number of SPAN ports on the network for out-of-band monitoring.
Network General buys Fidelia, boosts monitoring capabilities
Network General has acquired Fidelia Technology Inc., a deal the companies say will boost monitoring and analysis capabilities at the network level and beyond.
Feature: Companies tuning out critical alerts
Like a barking dog or leaky faucet, network pros are tuning out alerts from monitoring and analysis tools because of how many false-positives and non-critical warnings they receive.
Survey: Managers crave automated management tools
A recent survey by Uplogix found 70% of IT executives want automated control over fault diagnosis and recovery tools.
Cherokee Nation sniffs out, snuffs WLAN troubles
From the comfort of his truck, Jon James has found rogue and unsecured access points and has found out what is causing interruptions on the WLAN in Cherokee Nation.
NetFlow analyzers moving upstream
As bandwidth consumption and application performance continue to be hot topics, vendors are announcing enhancements to their NetFlow readers and analyzers.
Sniffer updates nothing to sneeze at
To prove the company is back, Network General this week announced enhancements to its Sniffer line, adding application performance analysis to its network monitoring tools.
Tool gives on-site management capabilities to distributed networks
Uplogix today introduced Envoy 2.0, a management tool for distributed networks, and one company plans to use it to keep an eye on its global infrastructure.
HP strengthens its core
Change may be in the air at Hewlett-Packard, but its ProCurve networking group is still working to chip away at Cisco Systems with new core switches and management modules.

News (3)

Network monitoring vendors sell SMBs on usability
Ease-of-use is the key to SMB hearts when it comes to network monitoring. A new release from SolarWinds might give market leader Ipswitch some competition.
NetScout acquires Network General
NetScout will acquire Network General, creating a one-stop shop for network management and monitoring tools.
Video, audio are network drains
Network misuse is rampant, according to a recent survey. Employees using the corporate network for recreation or high-bandwidth business can put a strain on network resources, but network engineers can combat that with filtering and monitoring.

Tips (7)

Installing Nagios on Solaris for network and server monitoring
Nagios is an excellent tool for network and server monitoring. This tip explains how to install Nagios on Solaris 10.
Open source network monitoring: Monitor your routers with Cacti
Learn how to configure the open source network monitoring tool Cacti to poll your routers, gather network data and provide graphs based on what you configured.
How the NetFlow protocol monitors your WAN
Learn how Cisco's NetFlow protocol, recently opened as an IETF standard, can monitor your WAN traffic and perform a number of other network monitoring tasks.
Working with Network Monitor
Learn how Network Monitor can be used to troubleshoot various types of network problems in this tip.
Troubleshoot networks with the pathping command
You can troubleshoot networks with the pathping command, which works like a combination of ping and tracert.
Duplex mismatch: Why duplex conflicts plague the network, part 1
Duplex mismatch problems -- caused by two ends of the Ethernet attempting a full-duplex connection, resulting in packet loss -- simply will not go away. After a decade of plaguing IP networks, duplex conflicts still seem to be the single worst source of performance degradation. Trivial to fix but ridiculously hard to identify and localize, mismatches recur frequently, as interfaces go up and down over time and network hosts are updated and changed. In column, Dr. Loki Jorgensen explores why duplex mismatches are difficult to conquer using auto-negotiation.
What Ping doesn't tell you
Ping is the classic tool based on network behaviorism. It distinguishes certain states of network functionality that are the cornerstones of everyday network troubleshooting.

General Content (2)

Going beyond the flow: Giving network engineers the tools to think, act globally
Alex Henthorn-Iwane of Packet Design shares his thoughts on all the attention being paid to the analysis of NetFlow information exported from routers and switches.
Enabling comprehensive performance management
Network and application teams must view enterprise IT infrastructure as a holistic entity, collaborating to address performance issues by accurately understanding network and application behaviors, assisted by state-of-the-art performance-management systems.

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