Some Particulars
Types of VC:s
- Permanent (pre set-up) VCs (PVCs)
- Switched (set up on demand) VCs (SVCs)
- pt-to-pt (uni/bi directional), multipoint (uni)
Virtual Path (VP) and Circuit (VC)
- each contain an ID, often combined
- some switches provide for VC aggregation by switching VPs rather than VCs
Can be used for tag/L3/MPLS approaches