SNA Overview

The Passport 4400 SNA services provides the ability to support Systems Network Architecture (SNA) over Synchronous Data Link Control (SDLC) and over Class II Logical Link Control (LLC2). SNA data can be switched between local ports on the Passport 4400 unit, or data can be carried across a Wide Area Network (WAN) to a remote destination using:

• A frame relay Permanent Virtual Circuit (PVC) when connecting to a FRAD
• A Switched Permanent Virtual Circuit (SPVC) when connecting to a Passport 6400 unit
• A Switched Virtual Circuit (SVC) when connecting to another Passport 4400 unit