设置作为主接口的逻辑通道呼叫8次仍未成功为切换到备份接口，每隔60秒检查一次主逻辑通道是否恢复Up，这样的配置应为()。A.backupstate-down8state-up60B.backupstate-down60;backupstate-up8C.backupstate-down8;backupstate-up60D.backupstate-down8;backupstate-uptime60
题目
设置作为主接口的逻辑通道呼叫8次仍未成功为切换到备份接口，每隔60秒检查一次主逻辑通道是否恢复Up，这样的配置应为()。
A.backupstate-down8state-up60
B.backupstate-down60;backupstate-up8
C.backupstate-down8;backupstate-up60
D.backupstate-down8;backupstate-uptime60