User Manual

M4300 Intelligent Edge Series Fully Managed Stackable Switches
Configure Switching Information User Manual274
The default debounce timer value is 0, which means that debouncing is disabled.
15. From the Flow Control menu, select to enable or disable IEEE 802.3 flow control.
The default is Disable. The switch does not send pause frames if the port buffers become
full. Flow control helps to prevent data loss when the port cannot keep up with the number
of frames being switched. When enabled, the switch can send a pause frame to stop
traf
fic on a port if the amount of memory used by the packets on the port exceeds a
preconfigured threshold and responds to pause requests from partner devices. The
paused port does not forward packets for the period of time specified in the pause frame.
When the pause frame time elapses, or the utilization returns to a specified low threshold,
the switch enables the port to again transmit frames. For LAG interfaces, flow control
mode is displayed as blank because flow control is not applicable.
16. In the Load Interval field, specify the load interval period for which data is used to compute
load statistics.
Enter the interval in multiples of 30 seconds. The allowable range is 30 to 600. The
default load interval is 300 seconds.
The smaller the load interval is, the more accurate
the instantaneous rate for load statistics is.
17. Click the Apply button.
Your settings are saved.
The following table describes the nonconfigurable information displayed on the page.
Table 98. Port Configuration
Field Description
Media Type The media type.
Port Type For normal ports this field is Normal. Otherwise the possible values are as
follows:
• Mirrored.
The port is a mirrored port on which all the traffic is copied
to the probe port.
• Probe. Use this port to monitor a mirrored port.
• Trunk Member.
The port is a member of a link aggregation trunk.
Look at the LAG pages for more information.
Admin Status When the port’s admin mode is D-Disable, this field indicates the reason.
Possible reasons are as follows:
• STP. Spanning
Tree Protocol violation.
• UDLD. UDLD protocol violation.
• XCEIVER. Unsupported SFP/SFP+ inserted.
Physical Status Indicates the port speed and duplex mode.
Link Status Indicates whether the link is up or down.
ifIndex The ifIndex of the interface table entry associated with this port.