Administrator defined value for port metric. This value overrides the metric which is used by the IBM 6611 to make routing decisions. If no response is provided to this parameter, the IBM 6611 will use defaults contained within the MPNP program. These defaults are based on values assigned by Banyan Systems for its VINES servers. The port metric is a rough estimate of the round trip delay for a maximum sized VINES IP packet to travel to any neighbor on this port. The unit for the metric value is 200 milliseconds. The default metric for an Ethernet port is 2. The default metric for a Token-Ring is determined by the response to the Token-Ring Data Rate parameter. The default metric for a serial port is determined by the response to the Serial-Line Speed parameter.