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pdp

As mentioned in the class, this virtual channel flow control helps prioritize certain packets, avoid deadlocks, reduce head-of-line blocking, etc.

apadwekar

How many buffers do we need to prevent deadlock? One for every potential outflow?

sandeep6189

We only have a single physical buffer, but can have multiple multiple logical or virtual buffers. If the virtual channels of incoming packets are different, then the router can perform out of order buffer processing to reduce head-of-line blocking.