An

A MEP can detect and report a number of defects, and multiple defects can be present at the same time. These defects are: bDefRDICCM(0) A remote MEP is reported the RDI bit in its last CCM. bDefMACstatus(1) Either some remote MEP is reporting its Interface Status TLV as not isUp, or all remote MEPs are reporting a Port Status TLV that contains some value other than psUp. bDefRemoteCCM(2) The MEP is not receiving valid CCMs from at least one of the remote MEPs. bDefErrorCCM(3) The MEP has received at least one invalid CCM whose CCM Interval has not yet timed out. bDefXconCCM(4) The MEP has received at least one CCM from either another MAID or a lower MD Level whose CCM Interval has not yet timed out. REFERENCE 802.1ag clauses 12.14.7.1.3:o, 12.14.7.1.3:p, 12.14.7.1.3:q, 12.14.7.1.3:r, and 12.14.7.1.3:s. While making the MIP creation evaluation described in 802.1ag clause 22.2.3, the management entity can encounter errors in the configuration. These are possible errors that can be encountered: CFMleak(0) MA x is associated with a specific VID list, one or more of the VIDs in MA x can pass through the Bridge Port, no Down MEP is configured on any Bridge Port for MA x, and some other MA y, at a higher MD Level than MA x, and associated with at least one of the VID(s) also in MA x, does have a MEP configured on the Bridge Port. conflictingVids(1) MA x is associated with a specific VID list, an Up MEP is configured on MA x on the Bridge Port, and some other MA y, associated with at least one of the VID(s) also in MA x, also has an Up MEP configured on some Bridge Port. ExcessiveLevels(2) The number of different MD Levels at which MIPs are to be created on this port exceeds the Bridge's capabilities (see subclause 22.3). OverlappedLevels(3) A MEP is created for one VID at one MD Level, but a MEP is configured on another VID at that MD Level or higher, exceeding the Bridge's capabilities. REFERENCE 12.14.4.1.3:b and clauses 22.2.3 and 22.2.4