PIB modules are text files similar to MIB files for SNMP. They are written in the SPPI (Structure of Policy Provisioning Information) language, based largely on the SMI language used for writing MIB modules. Where MIB modules describe the structure of management information for SNMP agents, PIB modules describe interfaces for policy information available in devices implementing the COPS (Common Open Policy Service).
COPS is described by RFC 2748 [L1 ] COPS-PR-SPPI is described by RFC 3159 [L2 ]