08-22-2012 11:12 PM - edited 03-09-2019 11:54 PM
I have an Internet link, connected to my Cisco Router. The package I subscribed for comes with a dynamic IP Address. I was told, if I need to remote access into the Cisco Router, I need to enable the DDNS feature. Can this be done on a Cisco Router? I was informed this feature isn't supported. Please help me
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08-22-2012 11:25 PM
Hi Bro
Yes, Cisco ASA and Cisco IOS Router do support DDNS. Just make sure you've the correct IOS version, which you could refer to this Cisco URL http://www.cisco.com/en/US/docs/ios/12_3/12_3y/12_3ya8/gt_ddns.html#wp1202953.
Please refer to the config below done with dyndns.org;
!
hostname INT-RTR1
!
ip domain name dyndns.org
ip name-server 8.8.8.8
!
ip ddns update method DynDNS
HTTP
add http://ramraj:cisco123@members.dyndns.org/nic/update?system=dyndns&hostname=
interval maximum 30 0 0 0
interval minimum 30 0 0 0
!
interface Dialer1
ip ddns update hostname INT-RTR1.dyndns.org
ip ddns update DynDNS
!
Note: hostname = INT-RTR1.dyndns.org was the host added/registered in the dyndns.org website.
Note: Press Ctrl + V, only then typing the symbol ? when adding the CLI add http://______________ above.
Note: ramraj:cisco123 is merely an example of a login credentials in dyndns.org.
You could also refer to this URL for further details http://www.petri.co.il/csc_configuring_dynamic_dns_in_cisco_ios.htm
P/S: If you this this comment is useful, please do rate them nicely :-)
08-22-2012 11:25 PM
Hi Bro
Yes, Cisco ASA and Cisco IOS Router do support DDNS. Just make sure you've the correct IOS version, which you could refer to this Cisco URL http://www.cisco.com/en/US/docs/ios/12_3/12_3y/12_3ya8/gt_ddns.html#wp1202953.
Please refer to the config below done with dyndns.org;
!
hostname INT-RTR1
!
ip domain name dyndns.org
ip name-server 8.8.8.8
!
ip ddns update method DynDNS
HTTP
add http://ramraj:cisco123@members.dyndns.org/nic/update?system=dyndns&hostname=
interval maximum 30 0 0 0
interval minimum 30 0 0 0
!
interface Dialer1
ip ddns update hostname INT-RTR1.dyndns.org
ip ddns update DynDNS
!
Note: hostname = INT-RTR1.dyndns.org was the host added/registered in the dyndns.org website.
Note: Press Ctrl + V, only then typing the symbol ? when adding the CLI add http://______________ above.
Note: ramraj:cisco123 is merely an example of a login credentials in dyndns.org.
You could also refer to this URL for further details http://www.petri.co.il/csc_configuring_dynamic_dns_in_cisco_ios.htm
P/S: If you this this comment is useful, please do rate them nicely :-)
06-14-2014 09:46 PM
Hi Everyone
I've been told that DynDNS now requires credit card, as it's no longer FREE. Please use www.no-ip.com instead. Shown below is a sample working configuration;
!
version 12.4
service nagle
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime
service timestamps log datetime msec localtime
service password-encryption
service sequence-numbers
!
hostname R1
!
enable password cisco
!
ip domain name no-ip.org
ip name-server 8.8.8.8
ip ddns update method ddns-noip1
HTTP
add http://lifeisgreat2014:cisco123@dynupdate.no-ip.com/nic/update?hostname=<h>
interval minimum 0 0 1 0
interval maximum 1 0 0 0
!
interface FastEthernet0/0
description ### Facing ISP ( WAN) ###
ip ddns update hostname r1.no-ip.org
ip ddns update ddns-noip1
ip address negotiate
!
interface FastEthernet0/1
description ### LAN ###
ip address 10.151.100.1 255.255.255.0
!
no ip http server
no ip http secure-server
ip dns server
!
control-plane
!
line con 0
line aux 0
line vty 0 4
!
scheduler allocate 20000 1000
ntp clock-period 17179773
ntp server 211.233.40.78
ntp server 61.153.197.226
ntp server 202.150.213.154 prefer
!
end
Note: If your WAN facing interface is getting a dynamic Public IP from the ISP, then you should add the <a> as shown below.
add http://test123:cisco123@dynupdate.no-ip.com/nic/update?hostname=<h>&myip=<a>
However, if your WAN facing interface is getting a dynamic Private IP, then this sample is OK i.e. without the <a>
Please refer to this URL
http://www.noip.com/support/knowledgebase/using-your-cisco-router-with-no-ip-dynamic-dns-services/
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