Alexis Kestler
Hey there! Notice your network running slow lately? Strange lag and buffering when video calling clients across the country? Or remote employees complaining dropped connections are affecting their productivity?
As your dedicated IT adviser, I‘m here to help you get to the bottom of these issues. The likely culprit? Packet loss. Not to worry – it‘s a common obstacle in today‘s complex enterprise networks, but easy to detect and fix with the right tools.
In this comprehensive guide, I‘ll explain what packet loss is, its impacts, top causes, and most importantly – 6 great tools to combat it. Monitoring and testing for packet loss should become a regular routine for optimal network operations. Let‘s dive in!
What Exactly is Packet Loss?
Simply put, packet loss is when units of network data called packets fail to reach their intended destination.
You‘re already familiar with packets – they‘re the basic blocks that make up all communication over networks and the internet. Emails, web browsing, file transfers, video calls…they‘re all broken down into thousands of tiny packets.
Each packet contains a piece of data, plus header information to ensure it reaches the right endpoint. Packets travel back and forth across a network between locations constantly.
But when packets are dropped or lost in transit before arriving, you start to experience the impacts:
- Buffering and lag, especially with videos
- Disconnected applications and services
- Slow loading speeds
- Data corruption or missing information
- Overall sluggish network performance
Over time, even low levels of consistent packet loss will degrade user experiences and employee productivity. And nothing is more frustrating than choppy video calls with clients!
Why Packet Loss Matters
"My internet speeds are great – why should I worry about packet loss?"
It‘s true you may have blazing fast 100 Mbps or 1 Gbps connections. But packet loss can still happen, and just 1-2% loss is noticeable for real-time apps.
That‘s because unlike bandwidth which affects bulk data transfers, packet loss causes:
- Latency and jitter – Delayed or out-of-order packets
- Retransmissions – Data needing to be resent, slowing effective speeds
- Error checking – Extra processing to validate correct data was received
This requires additional computing resources. Even as network speeds improve, packet loss continues degrading performance. And perceived lag can disrupt apps like VoIP, web conferencing, gaming, and cloud-based services.
While we can‘t eliminate packet loss entirely, monitoring helps catch problems early. Proactive maintenance keeps loss below 1% and connections reliable.
Top Causes of Packet Loss
Packet loss generally boils down to either network congestion, or components along the path failing. Let‘s explore the top culprits:
Faulty hardware – If routers, switches, WiFi access points, or cabling have errors, they will drop packets instead of forwarding them. This can stem from:
- Old equipment needing replacement
- Overheated network devices
- Loose or damaged cables
- Power supply issues
Wireless interference – Nearby electronics and dense WiFi networks can cause interference leading to packet loss:
- Microwaves, phones, cameras, etc. emitting radio signals
- Too many networks overlapping and competing for airtime
Network congestion – When traffic exceeds available capacity, packets are dropped:
- Insufficient bandwidth purchased from ISP
- Latency-sensitive apps overwhelming networks
- High volumes of large downloads or transfers
Software issues – Bugs, misconfigurations, or OS problems lead to packet loss:
- Network driver incompatibilities
- Security software conflicts
- QoS misconfigured
External factors – Packets fail to reach destinations beyond your local network:
- Server outages
- ISP node congestion
- WiFi dead zones
- Distance and latency related loss
Now that you know why packet loss happens, let‘s explore useful tools to detect and combat it!
6 Must-Have Tools to Test Packet Loss
Regularly monitoring packet loss gives you visibility when users start experiencing issues. Here are 6 excellent solutions:
1. PacketLossTest.com
PacketLossTest.com is my top recommendation for a quick, straightforward web-based test. It uses WebRTC present in modern browsers to exchange data packets with their servers.
The real-time graph clearly displays successful packets in green, and lost packets in red. It calculates packet loss percentage, latency, and jitter metrics right in your browser without any downloads.
Test from multiple locations or devices and compare performance. Their detailed reports include packet loss per second, allowing you to catch intermittent issues. It‘s also completely free and anonymous.
2. SolarWinds VNQM
SolarWinds VNQM focuses on VOIP and optimizing call quality across networks. But the powerful packet loss monitoring applies to any application.
Integrated call data combined with real-time network analytics help track down the root cause – whether it‘s faulty equipment, WiFi interference, or ISP bandwidth exhaustion.
The cool visual dashboard is modeled after a car speedometer and uses color coding to pinpoint network paths with critical packet loss. This tool is definitely worth a free trial run.
3. PRTG by Paessler
PRTG comes as a full-fledged network monitor, but packs excellent packet loss testing capabilities.
It uses Ping and SNMP sensors to measure packet loss and response times across devices. Charts plot loss levels over time to reveal intermittent issues. Threshold alerts notify you when pre-defined loss rates are exceeded.
With PRTG‘s great map overlays and dashboards, you can correlate packet loss locations with device health metrics for quick diagnosis. Definitely take advantage of their free trial.
4. iPerf3
iPerf3 is a powerful command-line tool used by network engineers for packet loss testing and measuring maximum bandwidth.
It actively generates TCP and UDP test traffic at configurable rates and size and reports on bandwidth, packet loss, jitter, and latency between endpoints. Tests can send multiple parallel streams.
While iPerf3 requires some setup and technical knowledge, it provides the most advanced packet loss testing capabilities for free. I recommend it for advanced diagnostics when needed.
5. EMCO Ping Monitor
EMCO Ping Monitor takes a simpler approach – continually pinging critical servers and sites to monitor packet loss and latency in real-time.
The software tracks packet loss percentages, latency deviations, and uptime stats across thousands of hosts. It can deliver alerts when thresholds are exceeded via email, sound, and mobile push notifications.
While basic, the affordable software is perfect for monitoring packet loss to cloud services, ISP links, and remote VPN connections. Try it free for 15 days.
6. OpManager
OpManager from ManageEngine has earned a spot on my list for its advanced features, despite being a full unified network monitoring platform.
It auto-discovers network topology and uses ICMP, TCP, and SNMP probes to monitor packet loss across devices. The unified dashboard clearly displays problem segments with packet loss and latency issues.
OpManager‘s custom packet loss reports and real-time alerts fit right in with most IT environments. You can install local monitoring probes to segment by location.
I recommend testing the free trial before buying – OpManager‘s pricing scales well based on monitored devices.
Pro tips for analyzing and fixing packet loss
My top tips for tackling packet loss issues:
Monitor proactively – Implement monitoring tools before users complain and establish baseline loss levels. This helps you notice and investigate abnormal spikes.
Identify the source – Track down the specific network segments and devices experiencing higher packet loss using path analysis tools.
Conduct active tests – Generate test traffic with iPerf3 or PacketLossTest.com to confirm actual loss rates while issues are occurring.
Review metrics and events – Packet loss often correlates with certain network events like maintenance or traffic surges. Analyze for patterns.
Fix the root cause – With the source identified, upgrade faulty hardware, reduce congestion, increase bandwidth, implement QoS controls, or other fixes. Continue monitoring to ensure packet loss improves after changes.
Notify impacted users – Once packet loss is reduced, notify affected users of the cause of reported issues and implemented fixes. This builds confidence and trust.
Acceptable packet loss thresholds
For real-time apps like VoIP, web conferencing, and video streaming: Aim for 1% or lower.
For bulk transfers and web browsing: Aim for 5% or lower.
For ultra-sensitive apps like online gaming and financial networks: Aim for less than 0.5%
Let‘s Keep Your Network Running Smoothly
Hopefully this guide has helped explain what packet loss is, why it matters, top causes, and most importantly – provided 6 great tools to prevent it from ruining user experiences.
Don‘t let your high speed internet go to waste due to undetected packet loss. Implement one of these solutions today, and test regularly to keep your network running optimally. Reach out anytime if you need assistance getting up and running or interpreting the results.
Here‘s to fewer support tickets and happier remote employees! Let me know if any other aspects of your network need tuning or monitoring. I‘m always happy to help identify performance bottlenecks.
