The value of tPortAccEgrSchedOvrSCIRLo specifies lower 32 bits of the cir-rate allowed for this virtual scheduler. This value should always be set along with tPortAccEgrSchedOvrSCIRHi, otherwise an 'inconsistentValue' error is returned. When the value of tPortAccEgrSchedOvrSCIRHi along with the value of tPortAccEgrSchedOvrSCIRLo is set to 4294967295 (0xFFFFFFFF), rate for this virtual scheduler indicates maximum rate. When the value of tPortAccEgrSchedOvrSCIRHi is set to 4294967295 (0xFFFFFFFF) and the value of tPortAccEgrSchedOvrSCIRLo set to 4294967294 (0xFFFFFFFE), rate for this virtual scheduler indicates no override. When the value of tPortAccEgrSchedOvrSCIRHi is set to 4294967295 (0xFFFFFFFF) and the value of tPortAccEgrSchedOvrSCIRLo set to 4294967293 (0xFFFFFFFD), rate for this virtual scheduler specifies that the CIR value is summed value of all the children scheduler