Accton Technology ES4710BD manual Flow control, Command flow control no flow control

ES4710BD 10 Slots L2/L3/L4 Chassis Switch

Note:

&Combo port is a conception involving the physical layer and the LLC sublayer of the datalink layer. The status of a combo port will not affect any operation in the MAC sublayer of the datalink layer and upper layers. If the bandwidth limit for a combo port is 1Mbps, then this 1Mbps applies to the active port of this combo port, regardless of the port type being copper or fiber.

&If a combo port connects to another combo port, it is recommended for both parties to use copper-forced or fiber-forced mode.

&Run “show interface” under Admin Mode to check for the active port of a combo port The following result indicates if the active port for a combo port is the fiber cable port or copper

cable port: Hardware is Gigabit-combo, active is fiber (copper). Example: setting ports 1/25 -28 to fiber-forced Switch(Config)#interface ethernet 1/25-28 Switch(Config-Port-Range)#combo-forced-mode sfp-forced

7.2.1.2.3flow control

Command: flow control no flow control

Function: Enables the flow control function for the port: the “no flow control” command disables the flow control function for the port.

Command mode: Interface Mode

Default: Port flow control is disabled by default.

Usage Guide: After the flow control function is enabled, the port will notify the sending device to slow down the sending speed to prevent packet loss when traffic received exceeds the capacity of port cache. ES4710BD’s ports support IEEE802.3X flow control; the ports work in half-duplex mode, supporting back-pressure flow control. If flow control results in serious HOL, the switch will automatically start HOL control (discarding some packets in the COS queue that may result in HOL) to prevent drastic degradation of network performance.

Note: Port flow control function is NOT recommended unless the users need a slow speed, low

performance network with low packet loss. Flow control will not work between different cards in the switch. When enable the port flow control function, speed and duplex mode of both ends should be the same.

Example: Enabling the flow control function in ports 1/1-8. Switch(Config)#interface ethernet 1/1-8 Switch(Config-Port-Range)#flow control

161