ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000 12-1
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12
Configuring ATM Traffic Descriptors
This chapter describes basic information you need for configuring traffic descriptors 
(TDs). Both the CBX 500 switch and the GX 550 Multiservice WAN switch can use 
TDs to define a service contract, which guarantees that a specified amount of data is 
delivered. While the network can still deliver data that exceeds the limits of this traffic 
contract, this data may be delayed or lost if network resources are unavailable.
When you configure a PVC, you select the desired ATM TD and enter the appropriate 
parameter value based on those items provided in the menu selection list. When you 
configure an SPVC, you first configure the specific TD and then assign this TD to the 
SPVC. Alternatively, for SPVCs, you may also choose one of the preconfigured TDs.
Note  – The B-STDX 9000 switch, CBX 500 Frame-based models, and 4-port 
Ethernet modules do not support ATM TDs.