DISTRIBUTED NETWORK ADDRESS AND PORT TRANSLATION FOR MIGRATING FLOWS BETWEEN SERVICE CHAINS IN A NETWORK ENVIRONMENT

摘要

An example method for distributed network address and port translation (NAPT) for migrating flows between service chains in a network environment is provided and includes distributing translation state for a flow traversing the network across a plurality of NAPT service nodes in the network, with packets belonging to the flow being translated according to the translation state, associating the flow with a first service chain at a flow classifier in the network, and updating the association when the flow migrates from the first service chain to a second service chain, with packets belonging to the migrated flow also being translated according to the translation state. The method may be executed at a pool manager in the network. In specific embodiments, the pool manager may include a distributed storage located across the plurality of NAPT service nodes.

主权项

1. A method executed at a pool manager in a network, comprising:
distributing translation state for a flow traversing the network across a plurality of network address and port translation (NAPT) service nodes in the network with packets belonging to the flow being translated according to the translation state; associating the flow with a first service chain at a flow classifier in the network; and updating the association when the flow migrates from the first service chain to a second service chain with packets belonging to the migrated flow also being translated according to the translation state.