PDF user manual for CopperEdge 150

PPP-HDLC Forwarding ModesThe Cross-Connect netmodel supports PPP-HDLC encapsulation,which is valid only for DSL ports, not for WAN VCs. Theforwarding mode in the previous table applies to both the DSLport and the WAN VC.PPP-HDLC (RFC-1662) is a point-to-point protocol that allowsa DSL port on the CE150 to receive PPP-HDLC frames. TheCE150 can transform them into RFC-1973 frames, and thensend them to a WAN VC. Different ports carrying PPP-HDLC aremapped to VCs on the same WAN interface. The operation iscalled Point-to-Point Protocol Multiplexing.To configure the PPP-HDLC-1973 forwarding mode, set the netmodeland encapsulation on the DSL and WAN interfaces:1. Set the DSL port’s netmodel and encapsulation, andspecify the WAN VC as the destination PII:CRAFT> set cmiface [1.4.1] netmodel=cross-connectencapsulationtype=ppp-hdlc destpii=1.2.1.1002. Set the netmodel and encapsulation for the WAN VC:CRAFT> set cmiface [1.2.1.100) netmodel=crossconnectencapsulationtype=rfc1973After configuration, both WAN VC 1.3.1.100 and DSP port 1.6.1have a forwarding mode of PPP-HDLC-1973.To configure the HDLC-VC-payload forwarding mode, set thenetmodel and encapsulation on the DSL and WAN interfaces:1. Set the DSL port’s netmodel and encapsulation, andspecify the WAN VC as the destination PII:CRAFT> set cmiface [1.4.1] netmodel=cross-connectencapsulationtype=ppp-hdlc destpii=1.2.1.1002. Set the netmodel and no encapsulation for the WANVC:CRAFT> set cmiface [1.2.1.100) netmodel=crossconnectencapsulationtype=noneAfter configuration, both WAN VC 1.3.1.100 and DSP port 1.6.1have a forwarding mode of HDLC-VC-payload.For more information about the Cross-Connect netmodel, referto Appendix A, Data Encapsulation.&KDSWHU$GYDQFHG&RQILJXUDWLRQ