All MIBs › COMTROL-ES8510-MIB › portCtrlFlowControl
portCtrlFlowControl
Module: COMTROL-ES8510-MIB
OID (symbolic): COMTROL-ES8510-MIB::portCtrlFlowControl
OID (numeric): 1.3.6.1.4.1.2882.2.1.1.3.1.1.1.5
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: Flow control configuration.
Flow control is used to throttle the throughput rate of an end station to avoid dropping packets during network congestion. If flow control mode is not set and if there is no packet buffer space available, the incoming packets are discarded.
Symmetric Flow Control stops and restarts packet transmission by transmitting and receiving pause frames. When a port's free buffer space is almost empty, the device send out a Pause frame to stop the remove node from sending more frames into the switch. When congestion on the port is relieved, the device send out a Pause frame with pause time equal to zero, making the remove node resume transmission.
What is portCtrlFlowControl?
This read-write setting enables or disables symmetric flow control, using 802.3x pause frames, on a specific switch port. Enabling flow control helps prevent packet loss during momentary congestion by letting the port signal the sender to pause, which is useful for links to buffer-limited or bursty devices. For example, an admin connecting a storage device that occasionally bursts traffic faster than the switch can buffer might enable symmetric flow control on that port to reduce dropped packets during those bursts.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2882.2.1.1.3.1.1.1.5 snmpwalk -v2c -c public <target> COMTROL-ES8510-MIB::portCtrlFlowControl
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.2882.2.1.1.3.1.1.1.5.1 snmpget -v2c -c public <target> COMTROL-ES8510-MIB::portCtrlFlowControl.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.2882.2.1.1.3.1.1.1.5.1 i <value>
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OID Breakdown
Upper-level ancestors (6 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.2882 | comtrol | COMTROL-ES8510-MIB |
| 1.3.6.1.4.1.2882.2 | products | COMTROL-ES8510-MIB |
| 1.3.6.1.4.1.2882.2.1 | managedSwitch | COMTROL-ES8510-MIB |
| 1.3.6.1.4.1.2882.2.1.1 | es8510 | COMTROL-ES8510-MIB |
| 1.3.6.1.4.1.2882.2.1.1.3 | portConfiguration | COMTROL-ES8510-MIB |
| 1.3.6.1.4.1.2882.2.1.1.3.1 | portControl | COMTROL-ES8510-MIB |
| 1.3.6.1.4.1.2882.2.1.1.3.1.1 | portCtrlTable | COMTROL-ES8510-MIB |
| 1.3.6.1.4.1.2882.2.1.1.3.1.1.1 | portCtrlEntry | COMTROL-ES8510-MIB |
| 1.3.6.1.4.1.2882.2.1.1.3.1.1.1.5 | portCtrlFlowControl | COMTROL-ES8510-MIB |