NetFlow is used to collect data flows from interfaces. The information can be stored on the switch but more commonly sent to a server which collects the NetFlow data and spits it out into something shiny. Okay, not shiny but data more easily digestible. Each packet is looked at for a set of IP packet ..read more

AI-driven network infrastructure is gaining momentum. Juniper Mist has seen campus switching revenue increase 70%. Integration of Mist within the Juniper network stack takes aim at solving some of the most common network infrastructure issues. Juniper announced the EX4100 switch at Mobility Field Day 7, in which Rowell Dionicio was in attendance. The latest EX ..read more

When it comes to building your toolbox we all have a few select favorites. Many tools come and go but there are those that have stuck around for the long haul. The ones you install on new computers and the ones you keep on a thumb drive, for portability. Below is a list from my ..read more

Meraki is evolving their cloud architecture to meet changing workforce demands. Hybrid options are desired by 47% of employees and 13% are more productive when working from home1. Network operators are searching for ways to automate with the adaption of the cloud. And it’s clear to see this with the latest feature releases coming to ..read more

Up until now, we’ve been using access points (APs) with a single Ethernet connection of up to 1 Gbps. With Wi-Fi 6E APs we will begin to see dual Multi-gigabit (mGig) Ethernet ports in either 2.5 Gbps or 5 Gbps. Multi-gigabit Ethernet is defined by IEEE 802.3bz. It’s a significant upgrade receiving one mGig Ethernet ..read more

Recently, Rowell joined NetAlly on a webinar to discuss common Wi-Fi issues caused by wired problems. Often times, Wi-Fi gets blamed for nearly every networking problem. But after doing some troubleshooting the issue comes from the wired infrastructure. We take a look at four common issues that look like Wi-Fi issues but are really wired ..read more

  Cisco’s vPC is a virtual port-channel which allows links physically connected to two different switches to appear as a single device to a downstream device as part of a single port-channel. To learn more, I recommend reading NX-OS and Cisco Nexus Switching by Ron Fuller, David Jansen, and Matthew McPherson. A vPC is configured ..read more

If you are unable to connect to a Windows Server Network Load Balancing (NLB) Virtual IP address configured for Multicast Mode it is because of the way your Cisco switch interacts with Microsoft NLB. Symptoms Cannot connect to Windows Server NLB Virtual IP address Cannot ping Windows Server NLB Virtual IP address Microsoft NLB Multicast ..read more

We dig in deeper into the operations of a switch in the CCNP SWITCH Official Certification Guide. The CAM table is one of the fundamental operations of a switch. It’s not only important for the 642-813 SWITCH exam but it’s important to know for working on the job. The CAM table, or content addressable memory table ..read more