Dell PowerEdge MX7000 EMC OpenManage Enterprise-Modular Edition Version 1.20.1 - Page 79

Configuring admin status, Configuring Maximum Transmission Unit, Configuring auto negotiation

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Configuring admin status You can switch the admin status for all ports, which is enabled by default. For the MX9116n FSE port groups 1/1/15 and 1/1/16, when you breakout the fiber channel ports, the admin status is disabled by default. Enable the status if required. 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 Enable Disable Auto negotiation on IOMs Enable Disable Interface status Up Down Expected results Auto negotiation is enabled on all three devices. Port is up. Expected. 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 79

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Configuring admin status
You can switch the admin status for all ports, which is enabled by default. For the MX9116n FSE port groups 1/1/15 and 1/1/16,
when you breakout the fiber channel ports, the admin status is disabled by default. Enable the status if required.
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
79