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LACP Configuration

LACP or Link Aggregation Control Protocol is used to control LAGs. The standard does allow automatic configuration of ports upon attachment, but is not supported by Tellabs. All LAGs must be explicitly created. The LACP also allows detection of unidirectional links and allows for gracefully adding or deleting links to the LAG without interruption of data. LACP and LAGs are currently only supported on uplinks.

The configuration of LACP is defined as follows:

LACPInterface Attributes

Attribute	Values	Default	Req	Description
Aid	NET1..NET2	N/A	Y	The name of the current LAG, values are NET1 through NET12
Admin-state	enabled \| disabled		N	Choice to Enable or Disable LACP.
lacp-mode	active \| passive	Active	N	Choice of LACP in the active or passive mode.
Lacp-timer	long \| short	Short	N	This setting affects how often LACP packets are sent and the timeout value. long: ACP packets are sent every 30 seconds, and the timeout is 90 seconds (default). short: LACP packets are sent every 1 second, and the timeout is 3 seconds. The timeout is the time the system waits for a LACP packet from the peer.
Lacp-wait-timer	int, 0 .. 10	2	N	By default, it's often configured to 0, meaning links are aggregated immediately upon detection. Setting a non-zero value delays aggregation until the wait time expires.

Note: * = required parameter

Command Path – tolt>interfaces>net>config>
Module – tolt
Container – interfaces
Container – config
Container – lacp-config
Styles – Example Parameters
- *aid – The name of the current LAG, values are NET1 through NET12
  - net <1..12> – ID of the net
- admin-state – Whether to enable LACP.
  - enabled | disabled (default)
- lacp-mode – Whether LACP is in the active or passive mode.
  - lacpactive (default) | lacppassive
- lacp-timer – Whether to use a short or long timer for the LAG.
  - long| short (default)
- lacp-wait-timer – Whether to use a short or long timer for the LAG.
  - <int, 0 .. 10> | 2 (default)

LACP Configuration Example

Command Path – tolt>interfaces>net>config>
Module – tolt
Container – interfaces
Container – net
Container – config
Container – lacp-config
Types – Example Parameters
- *Aid – NET1
- admin-state enabled
- lacp-mode active
- lacp-timer short
- lacp-wait-timer 2

LACP is, by default, configured to be off (disabled). The following section shows how to configure LACP on a LAG.

From the MDS1-ESUA<config># command line, input tolt interfaces net config NET1, and press Enter. Output similar to the following is displayed:

MDS1-ESUA<Config># tolt interfaces net config NET1 <enter> 
MDS1-ESUA<config-config-NET1># _

From the MDS1-ESUA<config-config-NET1># command line, input lacp-config admin-state enabled lacp-mode active lacp-timer short lacp-wait-timer 2, and press Enter.
Input commit and press Enter. Outputs similar to the following are displayed:

MDS1-ESUA<config-config-NET1># lacp-config admin-state enabled lacp-mode active 
lacp-timer short lacp-wait-timer 2 <enter> 
MDS1-ESUA<config-config-NET1># commit <enter> 
Commit complete. 
MDS1-ESUA<config-config-NET1># exit <enter>
MDS1-ESUA<Config>#

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LACP Configuration Example