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OnCommand Unified Manager 9.5
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Identifying LIFs with the most connections using the CLI

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You might want to migrate a data LIF if it exhibits a heavy load or throughput. To decide whether to migrate a LIF, you can display the load on LIFs, number of connections on the port, throughput, and CPU cycles on the node.

Steps

  1. Access the CLI as a cluster administrator.

  2. Set the privilege level to advanced by entering the following command: set -privilege advanced

    For details about using the CLI in advanced mode, see the System Administration Reference.

  3. To find the weight of each LIF, enter the following command: network interface lif-weights show

    A busy LIF is one that has the lowest weight.

  4. To find the active connections on a node, enter the following command: network connections active show-clients

    Note the highest client count by node.

    cluster1::> network connections active show-clients
Node    Client IP Address     Count
------  -----------------     ------
node1   192.0.2.253               12
        192.0.2.252                9
        192.0.2.251               12

node2   192.0.2.250               12
        192.0.2.252                9
        192.0.2.253                9

node3   customer.example.com       2
        customer.example.net       2
        customer.example.org       2

  5. To find the active connections by LIF on a node and SVM, enter the following command: network connections active show-lifs

    Note the highest client count per LIF.

    cluster1::> network connections active show-lifs
Node      Vserver Name  Interface Name  Count
--------  ------------  --------------- ------
node1
          vs1           clus1              30

node2
          vs2           clus1              30

node3
          vs3           lif1                2
          vs4           clus1              30

  6. Check the LIFs that are sharing the same home port and home node to identify the LIFs with the most connections.

  7. To choose the best data port, enter the following: statistics show -object port

    The statistics command provides throughput and bandwidth information for Ethernet ports. Each row provides a separate counter of unique information. Value is the value for the type of object since the counter was last cleared (since ONTAP was last started).

    cluster1::> statistics show -object port
Object: port
Instance: e0a
Start-time: 10/11/2013 13:51:41
End-time: 10/11/2013 13:51:41
Node: node1

    Counter                                           Value
    -------------------------------------------------------
    recv-data                                            0B
    recv-packets                                         0
    recv-mcasts                                          0
    recv-errors                                          0
    recv-dropped                                         0
    sent-data                                            0B
    sent-packets                                         0
    sent-mcasts                                          0
    sent-errors                                          0
    collisions                                           0