Why is my WiFi sometimes really slow, and other times really fast?

Answer by Westley Julio: Any number of causes. Also, I’m assuming “slow” and “fast” is referring to perceived performance of webpages and/or internet connected applications. Intermittent interference from other Wi-Fi and non-WiFi devices can put [...]

If data does not cross a layer 3 device, does it require an IP address to be delivered?

Answer by Westley Julio: The textbook answer is no. The real world, practical answer is it depends. Let’s say you have a server and client on the same broadcast [...]

Does my ISP know if I use a VPN?

Answer by Westley Julio: If they want to know they would be able to figure it out. Your ISP knows what network(s) you’re connecting to. If the network you’re connecting to belongs to a known VPN provider, they [...]

How do I configure a Polycom VoIP phone with a Cisco switch to communicate voice traffic and data?

Answer by Westley Julio: Your Polycom likely supports VLAN tagging. You’ll have to have it tag phone (SIP/RTP) related traffic and configure the connected port on your Cisco [...]

Do channels have anything to do with Wi-Fi connectivity?

Answer by Westley Julio: You may have interferor(s) that are Wi-Fi or non-Wi-Fi. Non-detection or difficulty detecting of ALL AP’s within a channel range is frequently a sign of an interference issue. For example, Wireless AV transmitters, certain [...]

Why is my Skype voice quality better than Google Voice?

Answer by Westley Julio: Skype and Google Voice are both implementations of VoIP. As such, they’re both affected by factors that all VoIP calls are such as Latency and Jitter. These will be the primary reasons why [...]

In terms of network security, why is wired more preferred over wireless?

Answer by Westley Julio: There are a few reasons. Largely, it’s because security comes in layers. The purpose of the layers is to not make the network impossible to compromise (which is a fool’s goal) [...]