Do I need a nas0 interface to run CDRouter with an ATM interface?
ATMCDRouter does not require a nas0 interface to use an ATM interface. The nas0 interface is created by the br2684ctl utility when Linux is configured to terminate an ATM PVC connection. When you create a nas0 interface, the Linux kernel maintains the ATM PVC and handles the desired ATM encapsulation.
CDRouter can open ATM PVCs directly from the ATM card without a nas0 interface. This is enabled in the CDRouter configuration file by configuring the following testvars:
testvar wanAtmInterface 0.0.35 testvar wanAtmEncap 1483Bridged-LLC
When the testvar wanAtmInterface is configured, CDRouter ignores the setting of the testvar wanInterface. Please see the CDRouter User Guide for more details on the above testvars.
NOTE: You can still use a nas0 interface with CDRouter. CDRouter will treat the interface as an Ethernet interface and will not be able to access the ATM encapsulation layer.
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