12/21/95 Current Production Release SX00064-A05 Scenario: Multiple simultaneous VCs. Mixed large and small packets. Transmit activity. Symptom : Performance degrades. Ping response time jumps from a few milliseconds to seconds. Apparently corrupted packets. Data destined for a particular VC gets delivered to another. Cause : F-FRED returns the same Descriptor Table entry multiple times. Results in multiple queues using the same entry (data corruption). Eventually all queues using only this one entry (reduced thruput). Solution: Set Bit 14 in Mode Register-1 to 1 at F-FRED initialization. Implementation: This symptom has only been observed during internal stress testing - no customers have reported this type of problem. Phase in to new configurations. INTERPHASE (i) CORPORATION HOTLINE:+1-214-654-5555 13800 Senlac * Dallas,TX 75234-8823 intouch@iphase.com +1-214-654-5000 FAX:+1-214-654-5500 http://www.iphase.com