tmnxBundleMemberDownReason contains the reason code for marking the member link of the bundle to down (i.e. tmnxBundleMemberActive will be set to false): none - The link is active and the value of tmnxBundleMemberActive is 'true'. outOfService - The link operational status is down. redDiffDelayExceeded - The differential delay of the link exceeded the configured value of red differential delay and tmnxBundleRedDiffDelayAction was configured as 'down'. mismatchEndPtDiscriminator - Detected inconsistent peer endpoint discriminator for the bundle. peerNotBundleMember - When the peer is either not added to the bundle or is removed from the bundle. underNegotiation - When the local end is trying to negotiate with the peer. peerInvalidMlHdrFmt - The peer does not support the required ML-PPP header format. The remote peer must support the same short/long sequence code, and at least as many classes as configured for the local bundle.