Clustered DATA ONTAP Load balancing


Clustered DATA ONTAP Load balancing

You can ensure that all interfaces of a multimode interface group are equally utilized for outgoing traffic by using the IP address, MAC address, round-robin, or port-based load balancing methods to distribute network traffic equally over the network ports of a multimode interface group. The load balancing method for a multimode interface group can be specified only when the interface group is created. IP address and MAC address load balancing IP address and MAC address load balancing are the methods for equalizing traffic on multimode interface groups. Clustered DATA ONTAP Load balancing
These load balancing methods use a fast hashing algorithm on the source and destination addresses (IP address and MAC address). If the result of the hashing algorithm maps to an interface that is not in the UP link-state, the next active interface is used.

Note:  Do not select the MAC address load balancing method when creating interface groups on a system that connects directly to a router. In such a setup, for every outgoing IP frame, the destination MAC address is the MAC address of the router. As a result, only one interface of the interface group is used.
IP address load balancing works in the same way for both IPv4 and IPv6 addresses.

Round-robin load balancing

You can use round-robin for load balancing multimode interface groups. You should use the round-robin option for load balancing a single connection’s traffic across multiple links to increase single connection throughput. However, this method might cause out-of-order packet delivery.

If the remote TCP endpoints do not handle TCP reassembly correctly or lack enough memory to store out-of-order packets, they might be forced to drop packets. Therefore, this might result in unnecessary retransmission’s from the storage controller.

Port-based load balancing

You can equalize traffic on a multimode interface group based on the transport layer (TCP/UDP) ports by using the port-based load balancing method.

The port-based load balancing method uses a fast hashing algorithm on the source and destination IP addresses along with the transport layer port number.

Related Topics

Netapp How to’s

Clustered DATA ONTAP load balancing

Thanks for your wonderful Support and Encouragement

Ankam Ravi Kumar

Working as Linux / Storage Administrator L3. Interested in sharing the knowledge.

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