Users Guide

Configuring admin status
You can switch the admin status for all ports, which is enabled by default. You can set the administrative status to enabled or
disabled.
To switch the admin status:
Select the port and click Toggle Admin State.
The Toggle Admin State window is displayed.
Configuring Maximum Transmission Unit
You can configure the Maximum Transmission Unit (MTU) for full-switch and fabric mode IOMs.
To configure MTU:
1. Click Devices > I/O Modules > View Details > Hardware > Port Information.
2. Select the Ethernet port and click MTU.
The Configure MTU window is displayed.
3. Select the MTU Size.
The approximate value for MTU is 1500 bytes. The default value is 1532 bytes, and the maximum is 9000 bytes. If the port
has both FCoE and Ethernet, the value is 2500 bytes.
Configuring auto negotiation
You can switch auto negotiation (AutoNeg) by performing Toggle AutoNeg.
The default configurations are:
● MX9116n/MX5108n—The auto negotiation is enabled for DAC cables and disabled for AOC and fiber optic transceivers.
● MX7116n Fabric Expander Module—The auto negotiation is enabled for DAC cables and disabled for AOC and fiber optic
transceivers.
● Servers—(Smart auto negotiation)—The NIC cycles through the possible settings matches the configuration on the link
partner.
For MX7116n, you cannot change the configuration. Hence, do not change the auto negotiation on the IOM manually, to avoid
configuration mismatch. The smart auto negotiation is common for DAC and fibers. It is recommended not to set forced speed
or enable the auto negotiation on the server for the different media that are supported. The following table describes the
expected results when auto negotiation is enabled or disabled on the switch and servers.
Auto negotiation
on servers
Auto negotiation
on IOMs
Interface
status
Expected results
Enable Enable Up Auto negotiation is enabled on all three devices. Port is up.
Expected.
Disable Disable Down Auto negotiation is enabled on MX7116n Fabric Expander Module.
Auto negotiation on IOM and server is disabled manually.
Configuration mismatch. Port is down. Expected.
NOTE: Switch server ports have autoneg enabled by default in order to bring up the link with server NIC at 25 GbE.
Disabling autoneg on the server port may force the server link to be operationally down.
To switch AutoNeg:
Select the port and click Toggle AutoNeg.
The Toggle AutoNeg window is displayed.
If Ethernet links are not displayed automatically, switch the auto negotiation setting.
Configuring Forward Error Correction
The Forward Error Correction (FEC) feature in OME-Modular helps mitigate errors in data transfers. FEC increases data
reliability.
Ethernet IO Modules
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