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Selecting Test Features
Selecting ATM Cell Stream Headers and Interface
Selecting ATM Cell Stream Headers and
Interface
Description The components of the ATM cell stream headers and the interface UNI
or NNI are selectable. User Network Interface (UNI) is used between a
LAN and a switch in the public network, Network Node Interface (NNI)
is used between switches in the public network.
HOW TO: 1 Select the INTERFACE, UNI or NNI.
2 Set up the header for the cell which is the subject of the test F/G
HEADER:
Generic Flow Control (GFC) - Applies to (UNI) only.
Virtual Path Indicator(VPI),
Virtual Channel Indicator(VCI),
Payload Type Indicator (PTI) -
Congestion not experienced= 000, Congestion experienced= 010
Cell Loss Priority (CLP) - 0=High Priority - 1=Low Priority
3 Select a background stream B/G STREAM 1,2 or3.
4 Select the header for the selected background (B/G HEADER).
5 Repeat the procedure for the other B/G STREAMS.
6 Select the content of the fill cells which will make up the remainder of
the cell stream. by selecting FILL CELLS - or .
IDLE UNASSIGNED
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