Virtual Private Routed Network Services
7750 SR OS Services Guide Page 871
SAPs
Encapsulations
The following SAP encapsulations are supported on the 7750 SR VPRN service:
• Ethernet null
• Ethernet dot1q
•SONET/SDH IPCP
•SONET/SDH ATM
• ATM - LLC SNAP or VC-MUX
• Cisco HDLC
•Frame Relay
ATM SAP Encapsulations for VPRN Services
The SR-Series series supports ATM PVC service encapsulation for VPRN SAPs. Both UNI and
NNI cell formats are supported. The format is configurable on a SONET/SDH path basis. A path
maps to an ATM VC. All VCs on a path must use the same cell format.
The following ATM encapsulation and transport modes are supported:
• RFC 2684,
Multiprotocol Encapsulation over ATM Adaptation Layer 5:
→ AAL5 LLC/SNAP IPv4 routed
→ AAL5 VC mux IPv4 routed
→ AAL5 LLC/SNAP IPv4 bridged
→ AAL5 VC mux IPv4 bridged
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