| Event Id | 77 |
| Source | SNA Server |
| Description | Connection Error Code = x0AFF X'0AFF' - Duplicate destination MAC/SAP for link service%n. |
| Event Information | According to Microsoft: Cause: When the LAN session is broken between the remote link service (running in the remote branch) and the central link service (running in the central office), both SNA Server and the centralized link service receive a "lost locality" message. However, in some cases, SNA Server receives a "lost locality" before the centralized link service. This causes SNA Server to reissue a new Open(Link) request while the central link service still believes its current connection is still active, causing the central link to respond with error x0AFF (duplicate destination mac/sap for link service) Resolution: Microsoft has confirmed this to be a problem in SNA Server versions 3.0, 3.0 SP1, 3.0 SP2, and 4.0. This problem was corrected in the latest SNA Server versions 3.0 and 4.0 U.S. |
| Reference Links | Distributed Link Service Reactivation Fails with Event 77,x0AFF |
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