Chapter 3 Configuration
Port # Connection Type: Five options to choose from: auto, 10M half-duplex, 10M full- duplex, 100M half-duplex or 100M full-duplex. Sometimes, there are Ethernet compatibility problems with legacy Ethernet devices. You can configure different types to solve the compatibility issues.
Port # Rate Limit: When it is enabled, enter a rate value that is configured as multiple of 32kbps. This function limits the inbound and outbound Ethernet throughput around the value that you specified.
IPv4 TOS priority Control: TOS, Type of Services, is the 2nd octet of IP packet. The bits 6-7 of this octet are reserved and bit 0-5 are used to specify the priority of the packet. The definition of these bits is listed blow:
Two bits: reserved
One bit: high reliability
One bit: high throughput
One bit: No delay
Three bits: IP priority (0 to 7)
This feature uses bits 0-5 to classify the packets’ priority. If the packet is in high priority, it will flow first and will not be constrained by the Rate Limit. Therefore, when this feature is enabled, the embedded Ethernet switch IC will check the 2nd octet of each IP packet. If the value in the TOS field matches in the checked values in the table (0 to 63), this packet will treat it as high priority.