Setting up Dynamic DNS (DDNS) with Cisco device

Cisco device has build-in support for Dynamic DNS services such as

• NO-IP – noip.com
• DDNS - dyndns.org
• TZO - tzo.com
• EASYDNS - easydns.com
• JUSTLINUX - justlinux.com
• DYNS - dyns.cx
• HN - hn.org
• ZONEEDIT - zoneedit.com

Most of them support HTTP updates and the following configuration does just about that. 

REMEMBER to reload the router (personal note) 

ip ddns update method no-ip
 HTTP
  add http://username:password@dynupdate.no-ip.com/nic/update?hostname=&myip=
 interval maximum 0 0 0 5
 ip ddns update hostname no-ip-hostname
 ip ddns update no-ip

interface FastEthernet0/0
 ip ddns update hostname no-ip-hostname
 ip ddns update no-ip
end

NO-IP [ LINK ]
Cisco [ LINK ]