„Priority Queue Service settings: select the priority queue service type.

—First Come First Service: the sequence of packets sent is depend on arrive order.

—All High before Low: the high priority packets sent before low priority packets.

—Weighted Round Ratio: 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 packet.

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

Miscellaneous Setting

„Collisions Retry Forever: disable is in half duplex. If happen collision will retry 48 times and then drop frame. Enable is in half duplex. If happen collision will retry forever.

„Hash Algorithm: CRC Hash or Direct Map for MAC address learning algorithm

„IFG Compensation: Internal Packet Gap time compensation configure. Select to “Enable” or “Disable”.

„802.1x Protocol: enable or disable 802.1x protocol.

„IGMP Query Mode: recognizes different queries from clients or servers to decide which Query will be the first priority. The modes are:

a.Auto Mode: chooses the switch that has the smallest IP address to be set for the IGMP Query mode.

b.Enable Mode: enables the switch to be the IGMP Querier.

c.Disable Mode: disables all other switches from being the IGMP Querier.

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LevelOne GSW-2491TXM user manual Miscellaneous Setting