18. Frame Relay:
-
Frame Relay is well suited for
intermittent and burst traffic.
-
Frame Relay can carry multiple
PVCs over a single physical
circuit.
-
CIR (Committed Information Rate)
is the rate at which a Frame
Relay network agrees
(guaranteed) to transfer
information under normal
conditions, averaged over a
minimum increment of time.
Expressed in bits/ Sec. Any
packets traveling over the CIR
are subject to be discarded
under certain conditions.
-
Frame Relay uses Data Link
Connection Identifier (DLCI) to
identify Layer 2 connections in
a Frame Relay network.
-
Bc stands for Committed Burst.
This is a negotiated tariff
metric in FR network.
-
Cisco supports the use of a
10-bit DLCI field resulting in a
maximum of 1024 data link
connection identifiers with
numbering starting at 0 and
ending at 1023.
