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Creating a dynamic multimode vif

You can improve throughput by creating a dynamic multimode vif. With a dynamic multimode vif, all interfaces in the vif are active and share a single MAC address. This logical aggregation of interfaces provides higher throughput than a single-mode vif. Dynamic multimode vifs can detect not only the loss of link status (as do static mulitmode vifs), but also a loss of data flow.

Before You Begin

You need to meet the following prerequisites to create a multimode vif:

  • Identify or install a switch that supports LACP over multiple port connections in your network, configured according to your switch vendor's instructions.
  • Decide on a case-sensitive name for the vif that meets the following criteria:
    • It must begin with a letter.
    • It must not contain a space.
    • It must not contain more than 15 characters.
    • It must not already be in use for a vif.
  • Decide on the interfaces you want the vif to consist of.
  • Configure all interfaces that will be included in the vif to be down using the ifconfig command.

Steps

  1. Enter the following command:

    vif create lacp vif_name -b ip [interface_list]

    -b specifies the load balanciing method.

    ip specifies IP-address based (default)

    vif_name is the name of the vif.

    interface_list is a list of the interfaces that make up the vif.

  2. Enter the following command:

    ifconfig vif_name IP_address netmask mask

Example

You can create a dynamic multimode vif, comprising interfaces e0, e1, e2, and e3 and using IP-based load balancing, with the following command:

vif create lacp MultiTrunk1 -b ip e0 e1 e2 e3