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	== Speed-Group and SerDes Configuration ==		== Speed-Group and SerDes Configuration ==

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	<nowiki>		<nowiki>
	speed-group <group_name> speed <speed_value> [serdes <serdes_mode>] duplex <duplex_mode>		speed-group <group_name> speed <speed_value> [serdes <serdes_mode>] duplex <duplex_mode></nowiki>
	</nowiki>

	- `<group_name>`: The name of the speed-group.		- `<group_name>`: The name of the speed-group.

Admin: Created page with "Category:Wiki == Speed-Group and SerDes Configuration == When configuring Speed-Groups with SerDes on Arista EOS, it's important to set both the speed and the appropriate SerDes settings for high-speed interfaces. The basic structure for configuring a Speed-Group with SerDes support is: speed-group speed [serdes ] duplex - ``: The name of the speed-group. - ``: The s..."

2025-12-15T10:24:25Z

Created page with "Category:Wiki == Speed-Group and SerDes Configuration == When configuring Speed-Groups with SerDes on Arista EOS, it's important to set both the speed and the appropriate SerDes settings for high-speed interfaces. The basic structure for configuring a Speed-Group with SerDes support is: <nowiki> speed-group <group_name> speed <speed_value> [serdes <serdes_mode>] duplex <duplex_mode> </nowiki> - `<group_name>`: The name of the speed-group. - `<speed_value>`: The s..."

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[[Category:Wiki]]

== Speed-Group and SerDes Configuration ==
When configuring Speed-Groups with SerDes on Arista EOS, it's important to set both the speed and the appropriate SerDes settings for high-speed interfaces. The basic structure for configuring a Speed-Group with SerDes support is:

<nowiki>
speed-group <group_name> speed <speed_value> [serdes <serdes_mode>] duplex <duplex_mode>
</nowiki>

- `<group_name>`: The name of the speed-group.
- `<speed_value>`: The speed of the group (e.g., 10G, 40G, 100G).
- `<serdes_mode>`: The SerDes mode to be used (e.g., `serdes 4x25G` for 4x25G mode).
- `<duplex_mode>`: The duplex setting for the interfaces (either `full` or `half`).

Example:

<nowiki>
speed-group SG1 speed 100G serdes 4x25G duplex full</nowiki>

This command configures a Speed-Group called SG1 with 100G speed, 4x25G SerDes mode, and full-duplex mode.

== Assigning Interfaces to a Speed-Group with SerDes ==
Once a Speed-Group with SerDes has been configured, you can assign individual physical interfaces to the group. The configuration syntax is:

<nowiki>
interface Ethernet <interface_number>
speed-group <group_name></nowiki>

Example:

<nowiki>
interface Ethernet1
speed-group SG1</nowiki>

This command assigns the Ethernet1 interface to the SG1 Speed-Group, which has the SerDes 4x25G configuration.

== Adjusting SerDes Mode for Speed-Groups ==
You may need to adjust the SerDes mode depending on the number of lanes and the configuration of your hardware. To modify the SerDes settings, use the following command:

<nowiki>
speed-group <group_name> serdes <serdes_mode>
</nowiki>

Where `<serdes_mode>` is the new mode (e.g., `serdes 4x25G` or `serdes 1x100G`).

Example:

<nowiki>
speed-group SG1 serdes 1x100G</nowiki>

This command changes the SerDes mode for Speed-Group SG1 to 1x100G, suitable for a single 100G link.

== Verifying Speed-Group and SerDes Configuration ==
To verify the configuration of the Speed-Group and the SerDes settings, use the following `show` commands:

<nowiki>
show speed-group <group_name></nowiki>

Example:

<nowiki>
show speed-group SG1</nowiki>

This command displays the details of the SG1 Speed-Group, including speed, duplex, and SerDes settings.

To check the status of the individual interfaces and their SerDes configurations, use:

<nowiki>
show interfaces ethernet <interface_number> status</nowiki>

Example:

<nowiki>
show interfaces ethernet 1 status</nowiki>

This command shows the operational status of Ethernet1, including speed and SerDes mode.

== Troubleshooting Speed-Group with SerDes ==
If issues arise with the Speed-Group or SerDes configuration, it's important to check the interface and system logs for any potential errors. Some useful commands for troubleshooting are:

<nowiki>
show logging</nowiki>

This command provides a detailed log of system events, including any errors or issues related to SerDes or Speed-Group configurations.

To verify the overall health of the system and interfaces:

<nowiki>
show interfaces ethernet <interface_number></nowiki>

Example:

<nowiki>
show interfaces ethernet 1</nowiki>

This command gives detailed information on interface Ethernet1, including any issues with speed or SerDes alignment.

== Removing a Speed-Group with SerDes ==
To remove a Speed-Group with SerDes configuration, use the following command:

<nowiki>
no speed-group <group_name></nowiki>

Example:

<nowiki>
no speed-group SG1</nowiki>

This command deletes the SG1 Speed-Group and removes the SerDes settings from any interfaces assigned to it.

== Useful Links ==
* [https://www.arista.com/en/support/product-documentation Arista EOS Documentation]
* [https://eos.arista.com EOS Command Reference Guide]
* [https://www.arista.com/en/solutions/serdes Arista SerDes Solutions]
* [https://community.arista.com Arista Community Support]

ARISTA - Speed-Group Commands with SerDes - Revision history

Admin: Text replacement - "Category:Wiki" to "Category:Wiki '''''[https://it-arts.net/index.php/Category:Wiki Return to Wiki Index]''''' "

Admin at 10:24, 15 December 2025