The tasks do not have to be performed in sequence. Determine the general IPMP configuration that would suit your needs. Your IPMP configuration depends on what your network needs to handle the type of traffic that is hosted on your system. However, for a given TCP connection, inbound traffic normally follows only one physical path to minimize the risk of processing out-of-order packets. Thus, if your network handles a huge volume of outbound traffic, configuring a big number of interfaces into an IPMP group can improve network performance.

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These physical interfaces might or might not be on the same NIC. The interfaces are configured as members of the same IPMP group.

If the system has additional interfaces on a second IP link, you must configure these interfaces as another IPMP group. A single interface can be configured in its own IPMP group.

However, failover and failback cannot occur for an IPMP group with only one interface. Consider the example of four VLANs, bge, bge, bge, and bge When a failure occurs, the data addresses on the failed interface migrate to the standby interface.

Then, the standby interface is treated the same as other active interfaces until the failed interface is repaired. Some failovers might not choose a standby interface. Instead, these failovers might choose an active interface with fewer data addresses that are configured as UP than the standby interface. You should configure only test addresses on a standby interface. IPMP does not permit you to add a data address to an interface that is configured through the ifconfig command as standby.

Any attempt to create this type of configuration will fail. Similarly, if you configure as standby an interface that already has data addresses, these addresses automatically fail over to another interface in the IPMP group. Due to these restrictions, you must use the ifconfig command to mark any test addresses as deprecated and -failover prior to setting the interface as standby.

You use IPMP options of the ifconfig command to create the configuration. An active interface is a physical interface that transmits both data traffic and probe traffic. For example, you can use the ifconfig command to obtain the status of a standby interface. You can observe this flag in the status lines for the interface in the ifconfig output.

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How to configure Solaris 10 Probe based IPMP

It makes sure to avoid any single point of failure on network side. We may face issues while configuring and even after configuring IPMP. Below are some tips and tricks to troubleshoot issues in solaris IPMP configuration. Check if the process is running on the system : ps -ef grep mpath root 1 0 ? You may find different errors as well as messages related to IPMP as shown below. The errors in the messages file can easily tell you the problem in the IPMP configuration. Disconnect and reconnect the ethernet from server side to renegotiate link speed with the switchport.


How to configure Solaris 10 Link Based IPMP

Avoid using spaces in group names. The ifconfig status display does not show spaces. Consequently, do not create two similar group names where the only difference is that one name also contains a space. If one of the group names contains a space, these group names look the same in the status display. In a dual-stack environment, placing the IPv4 instance of an interface under a particular group automatically places the IPv6 instance under the same group. Optional Configure an IPv4 test address on one or more physical interfaces.

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