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Wi-Fi Roaming: Intra-controller vs Inter-controller vs Inter-subnet

A mobility even occur if a client roams between access points. As wireless clients move between APs on the same controller and APs join to different controller within the network four different types of roaming events can take place. 1. Intra Controller2. Inter Controller3. Inter-Subnet (Inter Controller – Layer 3) Intra Controller Roaming : If a […]

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How to Configure Allowed VLANs on Cisco Trunk

By default, all VLANs are allowed across the trunk link. We can verify that using the show interfaces trunk command: You can prevent traffic from certain VLANs from traversing a trunked link using the following interface mode command: switchport trunk allowed vlan {add | all | except | remove} vlan-list For example, to prevent traffic from VLAN […]

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Troubleshoot WebEx Audio Not Working

Use below link to test a video meeting on your device. https://www.webex.com/test-meeting.html If you have some trouble on sounds, below, please see the solutions. 1 I Can Hear Others, but They Can’t Hear Me In most cases, if you can hear your colleagues but they can’t hear you, either your microphone is muted, or not plugged […]

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JSON Web Token Structure – Three Parts Separated by Dots

All Auth0-issued JWTs have JSON Web Signatures (JWSs), meaning they are signed rather than encrypted. A JWS represents content secured with digital signatures or Message Authentication Codes (MACs) using JSON-based data structures. A well-formed JWT consists of three concatenated Base64url-encoded strings, separated by dots (.): JOSE Header: contains metadata about the type of token and the […]

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What Is Cisco Express Forwarding (CEF)

Cisco Express Forwarding (CEF) is a packet-switching technique used within Cisco routers. The main purpose of CEF is to optimize the forwarding of packets and increase the packet switching speed. HISTORY Prior to CEF there were 2 methods for packet-switching – Process- Switching and Fast-Switching. PROCESS-SWITCHING The first method, process-switching is the oldest and slowest. In short the […]

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How to Setup Dynamic DNS on a NETGEAR Nighthawk Router?

A Dynamic Domain Name System (DDNS) service automatically updates the IP address information that is assigned to your host (domain) name. Whenever the IP address of your host name changes, the associated DNS server is updated. NETGEAR is partnered with No-IP to provide DDNS services. Create a NETGEAR No-IP account to set up your MyNetgear.com host name. […]