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Category: Network Services Monitoring

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Network Services Monitoring

Comprehensive Website Performance Monitoring

As the internet continues to grow exponentially, we see organizations relying on a great number of devices to support higher and higher standards of uptime and performance. With the release of MetricsView Performance Counter Monitors and SNMP Monitoring Agents, Dotcom-Monitor provides complete website performance monitoring solutions to give you insight

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Network Services Monitoring

Dedicated IPv6 Monitoring Location Now Available

Dotcom-Monitor now offers a dedicated IPv6 monitoring location, which means that tasks being monitored from this location will not be able to resolve traffic across an IPv4 network, so if the communication cannot travel across an IPv6 compatible network, this location will return a failed monitoring result.

Now you can test IPv6 connections specifically from an “IPv6 only” location to ensure that your services are accessible via IPv6 only nodes. This is useful for testing IPv6 specific resolution because there are configurations available on different networking devices that may allow traffic between IPv4 and IPv6 nodes that will not work with IPv6-Only nodes. For example, it is possible that you may have a router on one end of the communication that attempts to send IPv6-Only traffic using a tunneling mechanism to tunnel IPv6 through an IPv4 only network while the router on the other end is not capable of extracting the IPv6 address from the IPv4 tunneled data.

Utilizing an IPv6 location also allows you to ensure that any APIs you use are capable of handling IPv6 communications. The IPv6 monitoring location will let you know if your application is not IPv6-aware by triggering an alert when the application is unable to respond.

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How To Monitor Voice Connectivity – Inbound Line & SIP Monitoring

Voice Connectivity is Critical. Your phone systems have gone down and you are unable to communicate with your customers. After several hours of troubleshooting you have managed to get the services up again but what do you do now? Whether you utilize a SIP based VoIP system, digital voice over T1 lines or POTS (plain old telephone service), those voice services need to be available.

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New Features to Test How DNS Caching Affects Your Website

The new DNS caching features at Dotcom-Monitor allow you to perform some interesting tests that show how DNS caching can affect your page load speed.

We realize that many organizations monitor their online services with a number different goals in mind, and so we listened to the feedback we received that some users want to include the DNS response time in their monitoring and some users want to be able to remove DNS response from their monitors.

How you wish to handle DNS response time in regard to your monitoring needs is up to you, but we want to take this opportunity to show the differences in how DNS response time affects website load using our new tools.

We ran a test monitoring YouTube from a single location in the midwest United States with three different DNS cache settings. A basic HTTP full page load on the YouTube front page resulted in some interesting, although not that surprising results.

Keep in mind the results will vary depending upon a number of variables such as which locations you are monitoring from, the time of day, the load on the DNS servers, and on the website servers.

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A Tale of Monitoring DNS Blacklists

For George, the clean-up is just beginning. He is not even yet aware that his domain is blacklisted. All he knows is that he can’t send out additional emails, the update email on the company party that evening is now a fire-drill, and his boss is giving the system administrator and him the stink eye. The problem of not knowing for hours that your site has appeared on a DNS Blacklist (DNSBL) and that email—and, even worse, potentially website visitors—are being rejected is a problem with both primary impacts and multiple secondary impacts.

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Innovations in Microsoft Exchange Monitoring

Microsoft Exchange continues to grow in popularity, but until recently active monitoring via full round-trip processes have been lacking in the marketplace. As a result network administrators have found it difficult to accurately pinpoint Microsoft Exchange issues effectively. Dotcom-Monitor’s Microsoft Exchange Monitoring, actively monitors both the availability and performance of Exchange components and provides alerts and diagnostics information when an issue is detected. Among a wealth of other features, the solution includes the industry’s only tool for monitoring ActiveSync externally, so it mimics the same experience a real user would receive.

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SIP Monitoring: VoIP Market Growth creates a need for SIP testing

The VoIP marketplace is growing. If your organization uses a SIP-based VoIP solution its likely you’ve experienced issues in the form of dropped calls, or the inability to receive calls. Dotcom-Monitor’s SIP monitoring service tests a SIP-based VoIP system by actually making SIP test calls and measuring the results, allowing you to get back to work and know that your VoIP system is continually online.

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CDN Monitoring and “Cheshire Cat” Websites

How can you tell if the CDN you’re utilizing is actually paying dividends in terms of speeding up delivery of content to your website users? CDN monitoring can help the IT department—which has lost significant control over the servers that store the content because of CDN use—track key metrics to determine CDN performance and see if the CDN is living up to its SLA.

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Another Neustar UltraDNS Outage

April 30, 2014 – Neustar UltraDNS Down – Dotcom-Monitor is tracking a Neustar UltraDNS outage at this time. The UltraDNS outage appears to have started at approximately 10:34 am CST and extended to 12:47 noon while stabilizing. (UPDATE- As of 4:07 pm CST UltraDNS continues to experience DNS resolution instability.) The UltraDNS issue

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