Cisco Systems TEG-S2500i manual Misc Config, Collisions Retry Forever

All High before Low: The high priority packets sent before low priority packets.

WRR: Weighted Round Robin. Select the preference given to packets in the switch's high-priority queue. These options represent the number of high priority packets sent before one low priority packet is sent. For example, 5 High：2 Low means that the switch sends 5 high-priority packets before sending 2 low- priority packets.

Enable Delay Bound: Limit the low priority packets queuing time in switch. Default Max Delay Time is 255ms. If the low priority packet stays in switch exceed Max Delay Time, it will be sent. The valid range is 1-255ms.

Qos Policy: High Priority Levels: 0~7 priority level can map to high or low queue.

2.5.2.2 Misc Config

Collisions Retry Forever:

Disable – In half duplex, collision-retry maximum is 48 times and packet will be dropped if collision still happen.

Enable – In half duplex, if happen collision will retry forever.

Hash Algorithm: Choose algorithms, CRC-Hashor DirectMap, to maintain MAC address table.

IFG Compensation: Enable or disable inter-frame gap (IFG) compensation.

802.1x Protocol: Enable or disable 802.1x protocol.

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