Not able to login to my Sql

Hi,

I was trying to connect to mysql bymeans of below command.
mysql -u retail_dba -h nn01.itversity.com -p
and passed password as itversity

It pops up with an error message

[sirishkumard@gw01 ~]$ mysql -u retail_dba -h nn01.itversity.com -p
Enter password:
ERROR 1129 (HY000): Host ‘172.16.1.100’ is blocked because of many connection errors; unblock with ‘mysqladmin flush-hosts’

COuld you please guide to get access to the database.

Thanks,
Sirish.

Issue is fixed now. Thank you.