Configure Minimum Link Count on Port Channel

Minimum number of links per port-channel indicates the least number of links that need to be operationally UP. This indicates the number of port-channel as operationally UP. You can provide an optional "min-link-count" per EFA port-channel during PO create and PO update operations, which gets configured on the SLX port-channel.

Default value of min-link-count for a port-channel is 1, which is same as the SLX default value. Update the min-link-count attribute value using min-link-count operation. EFA validates the po-member-port-count >= po-min-link-count per device.

Note

Note

During upgrade from EFA 2.3.0 to EFA 2.4.0 or EFA 2.5.0, the min-link-count for the port-channels is set to the default value 1.

  • Empty PO: EFA 2.4.0 and EFA 2.5.0 does not support empty PO. Therefore, during upgrade from EFA 2.3.2 to EFA 2.4.0 or EFA 2.5.0, all the empty POs are marked with “delete-pending” state.
  • Non empty PO: During upgrade from EFA 2.3.2 to EFA 2.4.0 or EFA 2.5.0, all the non-empty PO gets configured with the default value (1) of “min-link-count”, and the default value is displayed as part of “efa tenant po show” output.
  • Single Homed to Dual Homed PO conversion is not allowed in EFA 2.4.0 and EFA 2.5.0.
  1. Configure Minimum Link Count during Port-Channel Create. 
    efa tenant po create --name <po-name> --tenant <tenant-name> --description <po-description> 
        --speed <100Mbps|1Gbps|10Gbps|25Gbps|40Gbps|100Gbps> --negotiation <active|passive|static> 
	 --port <list-of-po-members> --min-link-count <min-link-count> 
        --number <po-number> --lacp-timeout <short|long>
  2. Configure Minimum Link Count during Port-Channel Update. 
    efa tenant po update --name <po-name> --tenant <tenant-name> 
         --operation <port-add|port-delete|lacp-timeout|description|min-link-count>
         --port <list-of-po-members> --lacp-timeout string <short|long> --min-link-count <min-link-count> 
         --description <po-description>

    Example

    efa tenant po create --name ten1po1 --tenant ten1 --port 10.20.246.15[0/1-2],10.20.246.16[0/1-2] 
--speed 10Gbps --negotiation active --description tenant1po1 --min-link-count 2

efa tenant po create --name ten1po2 --tenant ten1 --port 10.20.246.15[0/3],10.20.246.16[0/3] 
--speed 10Gbps --negotiation active 

efa tenant po update --name ten1po1 --tenant ten1 --operation port-delete --port 
10.20.246.15[0/1],10.20.246.16[0/1] --min-link-count 1

efa tenant po update --name ten1po1 --tenant ten1 --operation port-add --port 
10.20.246.15[0/1],10.20.246.16[0/1] --min-link-count 2

efa tenant po update --name ten1po1 --tenant ten1 --operation min-link-count --min-link-count 1

efa tenant po update --name ten1po1 --tenant ten1 --operation min-link-count --min-link-count 2

efa tenant po show
+---------+--------+----+--------+-------------+----------+---------+---------------------+------------+-------------+-------------+
|  Name   | Tenant | ID | Speed  | Negotiation | Min Link |  Lacp   |        Ports        |   State    |  Dev State  |  App State  |
|         |        |    |        |             |  Count   | Timeout |                     |            |             |             |
+---------+--------+----+--------+-------------+----------+---------+---------------------+------------+-------------+-------------+
| ten1po1 |  ten1  | 1  | 10Gbps |   active    |    2     |  long   | 10.20.246.15[0/1-2] | po-created | provisioned | cfg-in-sync |
|         |        |    |        |             |          |         | 10.20.246.16[0/1-2] |            |             |             |
+---------+--------+----+--------+-------------+----------+---------+---------------------+------------+-------------+-------------+
| ten1po2 |  ten1  | 2  | 10Gbps |   active    |    1     |  long   |  10.20.246.15[0/3]  | po-created | provisioned | cfg-in-sync |
|         |        |    |        |             |          |         |  10.20.246.16[0/3]  |            |             |             |
+---------+--------+----+--------+-------------+----------+---------+---------------------+------------+-------------+-------------+
9037127-01 Rev AA