User Manual

Configure Switching Information
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M4200 and M4300 Series ProSAFE Managed Switches Web Management User Manual
14. Use Frame Size to specify the maximum Ethernet frame size the interface supports or is
configured to use, including Ethernet header, CRC, and payload.
The range is 1518 to 12288. The default maximum frame size is 1518.
15. Use Debounce Time to specify the timer value for port debouncing in a multiple of 100
milliseconds (msec) in the range to 100 to 5000.
The default debounce timer value is 0, which means that debounce is disabled.
16. From the Flow Control list, 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 traffic 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.
17. Click the Apply button.
The updated configuration is sent to the switch. Configuration changes take effect
immediately.
The following table describes the nonconfigurable data that is displayed.
Table 96. 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.