Attended the Frame Relay Session for R&S CCIE Candidates Wednesday morning. The instructor, Johnny Bass, is fast becoming one of my favorite teachers of CCIE material. His no-BS straight to the point style is great for covering CCIE material. Like yesterday’s IPv6 session, I jotted some notes and wanted to share them here.
Key points about LMI
Three types of LMI –
Gang of four, then ANSI (T1.617 Annex D, and then ITU (Q.933 Annex A)
LMI type needs to match Frame relay switch
Switched Virtual Circuits (SVC) – temporary, like a phone call. Setup then torn down
Permanent Virtual Circuits (PVC) – nailed up, appears like a permananent connection
Layer 3 to layer 2 mapping