Articles by tag "VLAN"

1. Why Did My Cisco IoT VLAN Stop Working After Upgrading to IOS XE 17.9.6?
   Selene Gong

   19
   Did you just upgrade a Cisco Catalyst 9300/9400 switch to IOS XE 17.9.6 (sometimes searched for as 17.09.06), only to find your IoT devices can't get an IP address or connect to the network? You're not alone, and it's not your configuration—it's a known software bug. This guide will walk you ...
2. How Many VLANs Are Supported on Cisco Catalyst 9300?
   Selene Gong

   18
   VLANs (Virtual Local Area Networks) are essential for logically segmenting Layer 2 networks in enterprise environments. With Cisco’s Catalyst 9300 series, a widely used access layer switch, it's important to understand how many VLANs it supports — both in theory and in practice. This guide ...