When the value of tmnxMsdpPeerGrpPeerAKeyEncrypt is 'true', the
password specified by tmnxMsdpPeerGrpPeerAuthKey is in the encrypted
form.
When the value of tmnxMsdpPeerGrpPeerAKeyEncrypt is 'false', the
password specified by tmnxMsdpPeerGrpPeerAuthKey is in plain text.
tmnxMsdpPeerGrpPeerAuthKey and tmnxMsdpPeerGrpPeerAKeyEncrypt,
which indicates whether or not the password string is encrypted,
must be set together in the same SNMP request PDU or else the set
request will fail with an inconsistentValue error.