Concept Guide

NOTE: Autonegotiation is not available for QSFP+ ports.

7. From the Speed drop-down menu, select the port speed.

NOTE: This setting is not available if you enabled autonegotiation.

The MTU (bytes) field displays the Maximum Transmission Unit setting for the Ethernet interface in

bytes from 594 to 12000. This setting is the limit for the largest packet that can be passed through

the interface.

NOTE: This setting is not available for fibre channel ports.

8. In the Remote Fault Signaling field, select Enabled or Disabled.

9. In the Keep Alive field, select Enabled or Disabled.

10. Click Apply.

Uplink Ports

The Uplink Ports section of the Port Configuration page is where you can enable or disable quadport

mode. This mode has I/O Aggregator ports a 1x40GE port operate as 4x10GE ports.

NOTE: You can only view these settings for M1000e devices in standalone or VLT mode.

This section displays whether quad-port mode is enabled or disabled. It also displays a graphic

representation of the ports on the device.

Configuring Uplink Ports

You can configure quad-port mode on certain I/O Aggregator devices so that a 1x40GE port operates as

4x10GE ports.

NOTE: You can only configure these settings for M1000e devices in standalone or VLT mode.

1. From the navigation menu, click Port Configuration.

The Port Configuration page appears.

2. In the Uplink Ports section, click Edit.

The Uplink Ports dialog box appears.

3. To enable the feature, select Quadport Mode, to disable it, clear this setting.

4. Click Apply.

Changing uplink port settings requires a reboot of the device. The Confirm dialog box appears.

5. Click Confirm.

Uplink Failure Detection

Uplink Failure Detection (UFD) provides detection of the loss of upstream connectivity. If there is a link

failure, the I/O Aggregator device disables downlink interfaces. The Uplink Failure Detection (UFD) section

of the Port Configuration page displays whether this feature is enabled for the I/O Aggregator device.

If UFD is enabled, the page also displays the Defer Timer setting in seconds. This setting prevents

unwanted flapping of downstream ports when the uplink port channel goes down and comes up. The

configured value in seconds is how long the device waits for the upstream port channel (LAG 128) to

come back up before it disables the server ports.