
Understanding ATM Concepts
114056 Rev. A 2-21
ATM Error Checking
ATM verifies that the VPI/VCI is valid with respect to the PVCs configured for the
ATM circuit. It also verifies the header format. ATM verifies valid SVC
connection through signaling messages.
Simulated Multicast Packet Support
Simulated multicasting is generally used in certain address resolution techniques
and for applications that require the delivery of identical information to multiple
recipients. Bay Networks ATM routers simulate multicasting by sending a copy of
the multicast or broadcast packet to every available virtual circuit on a particular
logical interface.
Converting Mb/s to Cells/s
Several ATM traffic parameters require you to enter values in cells per second
(cells/s). To convert to cells/s, divide the number of bits/s by 424 (the number of
bits per ATM cell).
Number of bits/second
Number of bits/ATM cell
= Number of cells/second
For example:
100,000,000 bits/s
424 bits/cell
= 235,849 cells/s
ATM0021A
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