?
Solved

Cisco 1720 Router 2 IP Addresses

Posted on 2006-03-23
5
Medium Priority
?
672 Views
Last Modified: 2013-11-29
Hi,

Is is possible to assign 2 IP addresses from different subnets to a single ethernet port on a Cisco 1720 router?

If so, how is it done?

Cheers,

YVS.
0
Comment
Question by:yvsupport
  • 3
  • 2
5 Comments
 
LVL 3

Expert Comment

by:simko
ID: 16270573
it is possible you have to create subinterface
eth0/0.1
ip add IP1 mask

eth0/0.2
ip add IP2 mask

regards
R
0
 

Author Comment

by:yvsupport
ID: 16271104
Sinko,

Thanks,

What is the syntax?

I have the following as the lines of config for the ethernet port on the router. What do I need to add?

interface FastEthernet0
 ip address 172.16.1.250 255.255.0.0
 speed 100
 full-duplex
0
 
LVL 3

Expert Comment

by:simko
ID: 16278261
interface FastEthernet0.1
 ip address 172.16.1.250 255.255.0.0
 speed 100
 full-duplex

interface FastEthernet0.2
 ip address 172.18.1.250 255.255.0.0 <or any other IP and mask>
 speed 100
 full-duplex
0
 

Author Comment

by:yvsupport
ID: 16281096
OK. Have tried to enter an IP address for the subinterface and I get the following:

"Configuring IP routing on a LAN subinterface is only allowed if that
subinterface is already configured as part of an IEEE 802.10, IEEE 802.1Q, or ISL vLAN."

any ideas?
0
 
LVL 3

Accepted Solution

by:
simko earned 2000 total points
ID: 16281498
you have to set a VLAN encapsulation
(config)> int fa0
(config-interface)>encap dot

0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

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

This program is used to assist in finding and resolving common problems with wireless connections.
Tech spooks aren't just for those who are tech savvy, it also happens to those of us running a business. Check out the top tech spooks for business owners.
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…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

850 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