The value of tmnxBsxGrpMdaTransPrefEntries indicates the
current number of transit prefix entries active on the
ISA-AA MDA in the group.
This object was obsoleted in release 10.0 and
replaced with tmnxBsxGrpMdaTransPrefV4Entr for IPv4
entries along with tmnxBsxGrpMdaTransPrefV6Entr for IPv6
entries.