Slow Web Browsing; Unable To Configure Port Forwarding - SMC Networks D3CM1604V Administrator's Manual

If the disconnections are limited to wired clients only
Check your NIC settings and all cable routing, connections, and power supplies.
If the disconnections are limited to wireless clients only
Focus on factors that affect wireless clients, such as:
Network selection and security
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Hardware access control
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Client TCP/IP settings
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Signal strength
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Sources of interference
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Can you connect to the Internet directly?
1. Set up a computer to connect to the Internet directly, without using the EMTA.
2. If you cannot connect to the Internet without the EMTA, contact your ISP for assistance.

Slow Web Browsing

If you experience slow Web browsing with the EMTA:
1. Check for possible intrusions by spyware and viruses.
2. Clear browser settings and cache (refer to the documentation for your Web browser).
3. Stop other programs running in the background that are consuming bandwidth.
4. A specific site may be suffering from server issues. Try another site.
5. Update the EMTA firmware.

Unable to Configure Port Forwarding

If you are not able to configure port forwarding for software applications, external servers, or
gaming:
Ascertain the port(s) that the application or game calls for.
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Some ISPs block ports, such as ports 20, 21, and 80. Check with ISP to confirm whether
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it is blocking ports.
Reserve IP addresses for the computers to ensure they receive the appropriate IP
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address(es) for the service created.
Disable firewalls and stateful packet inspection (SPI) applications.
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Create a dynamic DNS (DynDNS) account for dynamic IP addresses from the ISP.
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Update the EMTA firmware.
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Troubleshooting Procedures
D3CM1604V EMTA Cable Modem Administrator Manual
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