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Using a Proxy with vSphere Virtual Serial Ports

manual provides information about developing a virtual serial port concentrator for use in the vSphere environment. This guide describes capabilities of a proxy implementation that supports the VMware telnet extension, and provides information about configuring a virtual serial port for a proxy connection.

The use case for a virtual serial port proxy is to maintain specific network connections during vMotion, which is the movement of virtual machines from one ESXi host to another. Note that this method uses telnet so is best deployed in a private data center.