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ddns with on a 881W

Hi All

A friend asked me to place a CLI section for the ISR881W  for dynamic dns to


dynamic dns are now going to charge for a dns address.  So an alternative is to grab one free Dynamic DNS host account at


Here is the cli that has to be tftp'd to the ISR881W router (reason, cannot paste some of the characters) 


ip ddns update method no-ip
 interval maximum 2 0 0 0
 interval minimum 1 0 0 0
ip dhcp-client update dns

interface FastEthernet4

 description $WAN$
 ip ddns update hostname
 ip ddns update no-ip
 ip address dhcp
 ip access-group 100 in
 ip nat outside
 ip virtual-reassembly in
 duplex auto
 speed auto

Then I shut down the wan interface  and did a no shut on the wan interface .  DDNS updated so the debug and interaction with showed.



Raleigh(config-if)#no shut
May  1 01:31:33 EDT: DYNUPD: SWIF comingup 'FastEthernet4'
May  1 01:31:33 EDT: DYNUPD: SWIF comingup 'FastEthernet4'
May  1 01:31:35.482 EDT: %LINK-3-UPDOWN: Interface FastEthernet4, changed stateto up
May  1 01:31:36.482 EDT: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet4, changed state to up

May  1 01:31:42.578 EDT: %DHCP-6-ADDRESS_ASSIGN: Interface FastEthernet4 assigned DHCP address, mask, hostname


May  1 01:31:43 EDT: DYNDNSUPD: Adding DNS mapping for <=>
May  1 01:31:43 EDT: HTTPDNS: Update add called for <=>
May  1 01:31:43 EDT: HTTPDNSUPD: Session ID = 0x9
May  1 01:31:43 EDT: HTTPDNSUPD: URL = ''

May  1 01:31:43 EDT: HTTPDNSUPD: Sending request
May  1 01:31:44 EDT: HTTPDNSUPD: Response for update <=>

May  1 01:31:44 EDT: HTTPDNSUPD: DATA STARTnochg
May  1 01:31:44 EDT: HTTPDNSUPD: DATA END, Status is Response data recieved, successfully
May  1 01:31:44 EDT: HTTPDNSUPD: Call returned SUCCESS, update of <=> succeeded

May  1 01:31:44 EDT: DYNDNSUPD: Another update completed (outstanding=0, total=0)
May  1 01:31:44 EDT: HTTPDNSUPD: Clearing all session 9 info


Version history
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Last update:
‎04-30-2014 11:10 PM
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