ADC SWD4573I1 Manuale Utente

Configure the cross connections (ATM circuits), using the 

profiles that you created for service (see 

 for 

the command-line interface or 

 for the Web 

interface). Essentially, these are the connections you must set up, as shown in the following 
figure:

from the channel-side card to the line-side card in each subtended system

from the line-side card in the subtended system to the upstream channel-side card in the 
subtending system

from the channel-side card to the network uplink card (cross-connects) in the 
subtending system

from the network uplink card (line interface) port to the ATM switch

The network administrator will assign the VPI/VCI values. The values shown in the above 
illustration are for example only. The network administrator can set up VPI/VCI values in a 
meaningful way to differentiate between nodes or areas of subtended sites.

The UPC policing function monitors and regulates traffic flow at the 

interface to ensure the traffic conforms to the configured traffic contract (see 

 for 

information about the traffic contract). Policing protects the network from intentional or 
unintentional changes in the traffic contract that could affect other connections. If you 
enable policing and traffic does not conform, it is deleted. Policing validates parameters 
such as VPI/VCI values, traffic rates conforming to contract. Policing can be enabled per one 
of the following: ATM port, PVC, or PVP.

When you subtend systems using DS1/DSX-1 cards, set up the 

subtending relationships using the command-line interface.

DS3

OC3

DS3

DS3

DS3

Channel-Side

Channel-Side

Line-Side

Uplink

Line-Side

Cross-Connect

Cross-Connect

VPI 200
VCI 250

VPI 100
VCI 250

VPI 250
VCI 300

ATM

Switch