I am being attacked by someone on Xbox live. They are attacking my router.

I am being attacked by someone on Xbox live. They are attacking my router.
Hi,

Firstly I understand your frustration with this person, but don't panic.

Things YOU NEED TO DO:

• Block the user. Do not send them any messages or join them in any Live Parties
• You can can, if you need to, put your profile to appear offline.
• Contact your ISP and ask them to give your connection a new IP address.

While you can try resetting your router there is no guarantee you'll be given a new IP address, this why I advise you to call your ISP.

:)