Forwarding to clusters of service nodes

A computing device in a network fabric comprising:

• one or more computer processors;
• and
• a memory storing instructions that, when executed, cause the computing device to:
• receive a packet associated with a service provided by at least one service node included in one cluster of a plurality of clusters of service nodes, each cluster of the plurality of clusters including one or more service nodes and being assigned to at least one hash bucket from a plurality of hash buckets, wherein each hash bucket is assigned a bucket hash value generated by applying a hash function to a unique combination of at least a port number value and an address value;
• apply the hash function to a port number of the packet and an address value of the packet to determine a hash value of the packet;
• determine that a hash bucket value of a first hash bucket from the plurality of hash buckets matches the hash value of the packet;
• in response to determining that a hash bucket value of a first hash bucket from the plurality of hash buckets matches the hash value of the packet, assign the packet to the first hash bucket;
• and
• select a first service node to service the packet, the first service node being selected from the first hash bucket assigned to the packet.

A non-transitory computer-readable medium storing instructions that, when executed by a computing device in a network fabric, cause the computing device to:

• receive a packet associated with a service provided by at least one service node included in one cluster of a plurality of clusters of service nodes, each cluster of the plurality of clusters including one or more service nodes and being assigned to at least one hash bucket from a plurality of hash buckets, wherein each hash bucket is assigned a bucket hash value generated by applying a hash function to a unique combination of at least a port number value and an address value;
• apply the hash function to a port number of the packet and an address value of the packet to determine a hash value of the packet;
• determine that a hash bucket value of a first hash bucket from the plurality of hash buckets matches the hash value of the packet;
• in response to determining that a hash bucket value of a first hash bucket from the plurality of hash buckets matches the hash value of the packet, assign the packet to the first hash bucket;
• and
• select a first service node to service the packet, the first service node being selected from the first hash bucket assigned to the packet.