Network, Networking Technology, Data Communication Terms, Glossary and Dictionary

VF: Variance Factor

Variance Factor(VF) is one of three link attributes exchanged using PNNI Topology State Packet (PTSP) to determine the available resources of an ATM network. VF is a relative measure of Cell Rate Margin (CRM) normalized by the variance of the aggregate cell rate on the link.

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VF: Variance Factor