Hawking Technology 10M, 100M manual PHY Monitoring and Port Mode Setup, Flow Control, Aging, Vlan

3.1 PHY Monitoring and Port Mode Setup

One of the software’s major tasks is to continuously monitor the PHYs in order to set up the switch ports according to whether the link is up or down, and in the latter case, what the current speed, duplex mode and pause capabilities are. The PHYs are polled every 100 ms.

3.2 Flow Control

In the 16-port switch, flow control (back pressure) is also supported in half duplex. Flow control can be enabled or disabled on a per-port basis from the command line interface.

If flow control is enabled for a port, the associated PHY will be set to advertise support of “Symmetric Pause”, but not “Asymmetric Pause”. If the station connected to the port also supports “Symmetric Pause”, flow control will be enabled on the switch port.

3.3 Aging

To prevent that an automatically learned MAC address of a station that has been detached will remain in the MAC address table permanently, the aging function in the switch is activated on a regular basis. The period for the aging function is determined by the aging time parameter. The aging time parameter can be set from the command line interface. The default value is 300 seconds. Setting the aging time parameter to 0 disables the aging function.

3.4 VLAN

Port-based VLAN can be defined statically. GVRP (Generic/Group VLAN Registration Protocol) is not supported. A maximum of 24 VLANs can be stored in EEPROM.

3.5 Link Aggregation

Link aggregation groups (or channels) can be defined statically. LACP (Link Aggregation Control Protocol) is not supported. The maximum number of aggregation groups is 8. The software will automatically detect that a link has gone down and then reassign packet distribution on the other links in the group.

3.6 Quality of Service

Various classifications and prioritizations such as TOS, Shaper and Storm are supported in order to enable Quality of Service for real time applications such as VoIP (Voice over IP).

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