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SI2000 Callisto821+ Router Users Guide 

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SI2000 Callisto821+ Router can be configured to operate in bridged mode. This allows Callisto821+ to be 
used as a simple modem instead of more complex router device. Such configuration is suitable for large 
deployments where no device configuration is expected. Bridge module is capable of 802.1q and 802.1p 
processing. 

To create new bridged connection point your web browser to Callisto821+ IP address and click WAN 
connections under Configuration section in navigation bar. 
 
The system will provide several options. You can select between two protocols available for bridging 
Ethernet packets over ATM DSL link: 

1. RFC1483 

bridged 

2. PPPoE 

bridged 

 
Select the one appropriate for your network configuration and click Configure. 
 

 
 
 
Enter a name for you connection into Description field and set correct ATM VPI/VCI settings. You can 
choose between two encapsulation methods: 

– 

LLC/SNAP: LLC header will be added to Ethernet packets before sending them over AAL5 connection 

– 

VcMux (null): Ethernet packets will be sent over AAL5 connection without any additional headers.