Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Changing external IP address on Cisco 1921 Router

Posted on 2016-11-16
1
Medium Priority
?
116 Views
Last Modified: 2016-11-16
Hi Guys,

We are in a situation where we are going to be moving to a different ISP and therefore, we would need to change our external IP addresses to 4 of our Cisco 1921 routers. Those routers are used only for VPN tunnels for our clients. Is there any suggestion how can we change our current public IP address given below references from our sh run:

interface GigabitEthernet0/1
ip address 78.154.104.3 255.255.255.240
ip default-gateway 78.154.104.14
ip route 0.0.0.0 0.0.0.0 78.154.104.14

can you direct me what are the commands to change the current IP address + gateway IP? Also, apart from sh run, do you think there is anything else I need to check in the router in relation to the external IP change?
0
Comment
Question by:Nitsan Reznik
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 9

Accepted Solution

by:
jmac44 earned 2000 total points
ID: 41890411
login with the right privileges
type this:
enable
conf t
interface GigabitEthernet0/1
ip address (new ip) (netmask)
ip default-gateway (new ip)
exit
ip route 0.0.0.0 0.0.0.0 (new ip)
exit
wr - this will save your work

sh interfaces will show detailed information on interfaces
sh ip interface brief will show if the interface is up or down and what the ip is
1

Featured Post

Are You Ready for GDPR?

With the GDPR deadline set for May 25, 2018, many organizations are ill-prepared due to uncertainty about the criteria for compliance. According to a recent WatchGuard survey, a staggering 37% of respondents don't even know if their organization needs to comply with GDPR. Do you?

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Concerto Cloud Services, a provider of fully managed private, public and hybrid cloud solutions, announced today it was named to the 20 Coolest Cloud Infrastructure Vendors Of The 2017 Cloud  (http://www.concertocloud.com/about/in-the-news/2017/02/0…
This article is in regards to the Cisco QSFP-4SFP10G-CU1M cables, which are designed to uplink/downlink 40GB ports to 10GB SFP ports. I recently experienced this and found very little configuration documentation on how these are supposed to be confi…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Both in life and business – not all partnerships are created equal. As the demand for cloud services increases, so do the number of self-proclaimed cloud partners. Asking the right questions up front in the partnership, will enable both parties …

670 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question