Tag Archive for vlan

RSPANs on Cisco Switches

We discussed SPANs earlier, but let’s talk about RSPANs for a bit. Can anyone guess what the “R” means?  You guessed it — “Remote”.  An RSPAN is a way to get traffic from a SPAN source on one switch to…

VLANs on Linux

My home network has a Linux box running IPTables as it’s center point, and, since there are four networks, it has 4 NICs and 4 cables into the switch.  I kept running into problems with the NICs (they would reorder…

VTP and You

VLAN Trunk Protocol (VTP) is a little gem on Cisco switches that allows you configure VLANs in one place and have them appear on all of your switches. This is great for large enterprises with 8457839 switches all trunked together…