The value of tmnxEthTunnelMemberPrecedence specifies the precedence
level of the Member.
When tmnxEthTunnelProtectionType of the group is set to
'g8031-1to1 (1)', only two precedence values are valid, and each member
MUST have a different precedence.
0 - This is considered the primary member, or the
working member.
1 - This is considered the secondary member, or the
protection member.
When tmnxEthTunnelProtectionType is set to the value 'loadsharing (2)'
the precedence of all members should be the same.