The number of occurrences of configuration digest errors
for this management domain. A configuration digest error
occurs when a device receives a VTP advertisement for which:
- the advertisement's Configuration Revision Number is
greater than the current locally-held value, and
- the advertisement's digest value computed by the
receiving device does not match the checksum in the
summary advertisement that was received earlier. This
can happen, for example, if there is a mismatch in VTP
passwords between the VTP devices.