Vlan
QinQ: IEEE 802.1Q Tunneling
- Tony Mattke
- Switching
- 3 min read
In situations where service providers want to offer transparent LAN services that preserve a customers VLAN tags across your Layer-2 network, this amendment to the IEEE 802.1q …
SVI Autostate
- Tony Mattke
- Switching
- 2 min read
Switch Virtual Interfaces, or SVIs on Cisco IOS use a feature called autostate to determine the interface availability. By default an SVI will show an up/down (Status / Protocol) …
Introduction to Private VLANs
- Tony Mattke
- Switching
- 4 min read
The concepts behind Private VLANs are in fact rather simple, but it is quite easy to get discombobulated in the details. In their simplest form, PVLANs can dissociate ports within …