Skip to content
Real Network Fixes
Plain-English fixes for internet and network problems
Library
Field Cases
Track My Issue
Dark mode
Submit an Issue
Troubleshooting Library
Network Connectivity
Internet Not Working
2
Slow Internet Speed
2
Intermittent Connectivity
2
Packet Loss
1
DNS Problems
2
DHCP Problems
1
IP Address Conflicts
1
Network Latency
1
Switches and Routers
Cisco Switch Problems
1
VLAN Configuration Issues
1
Router Connectivity
1
Switch Port Troubleshooting
1
Routing Problems
1
PoE Failures
1
Firewall Troubleshooting
Fortinet Issues
1
SonicWall Issues
1
Cisco Firewall Issues
1
Firewall Rules and NAT
1
VPN Connectivity
1
Firewall Migration
1
Wi-Fi and Wireless
Wi-Fi Disconnecting
1
Access Point Offline
1
Weak Wireless Signal
1
Wi-Fi Heatmap and Coverage
1
Wireless Interference
1
Meraki Access Point Issues
1
Fiber Optic and Cabling
Fiber Link Down
1
Fiber High Loss
1
OTDR Troubleshooting
1
SFP Compatibility
1
Single-Mode and Multimode Fiber
1
Cat5e/Cat6 Problems
2
Ethernet Termination
1
ISP and WAN
ONT Troubleshooting
1
ISP Circuit Down
1
WAN Failover
1
Slow Gigabit Internet
2
Circuit Turn-Up
1
Demarcation Issues
1
Real Field Troubleshooting Cases
Recently Resolved Network Issues
Field Technician Case Studies
Step-by-Step Repair Procedures
1
Diagnostic Commands
Testing Tools and Checklists
Get Technical Help
Submit a Network Issue
Track My Issue
Request Expert Assistance
Solved Questions
Home
›
Network Connectivity
›
Slow Internet Speed
Slow Internet Speed
Network Connectivity Troubleshooting: No Internet, Slow Speeds, Dropouts and More
Section guide
No internet, slow speeds, dropouts, packet loss, DNS, DHCP, IP conflicts and latency: what each looks like and the simple tests that find the cause.
Ethernet Connection Randomly Drops from 1 Gbps to 100 Mbps: Causes, Troubleshooting and Resolution
Reported issue
Your fiber plan is 1 Gbps, but the link to the router keeps falling to 100 Mbps and Wi-Fi calls stutter. Check the cable first.
Before you change anything
Save the current device configuration and note what you change, so you can roll back.