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New Member

Use private ip address for 3550 switch

Hi, Can we use private ip addresses (192.168.1.1) for 3550 switches (to conserve ip addresses) and still access for configuration? We tested, but couldn't access, does there need to be further configuration in router or core switch to access the switch for configuration? Thanks, Chris.

  • Other Network Infrastructure Subjects
14 REPLIES

Re: Use private ip address for 3550 switch

crish,

i think you are going to use that ip address for the management purpose...right...you can able to access it from your local lan but you are not allow to access it from the internet as private ip addresses are not allow in internet...

and can you tell me what is your exact requiremet...?

rate this post if it helps

regards

Devang

New Member

Re: Use private ip address for 3550 switch

Hi Devang,

Yes, we are toying with the idea of using private ip for the management of the box, but at this point we can't access from our internal LAN, not necessarily from the Internet. We usually use Telnet session or web browser to access the switch to make a configuration change. It works when we configure the switch with a real ip address from our network, but doesn't seem to work using a private (fake) ip address. I was wondering if there was more to do to make this work internally. Thanks, Chris.

Re: Use private ip address for 3550 switch

so you have configure the vty line for telnet access and also configure the password ...

New Member

Re: Use private ip address for 3550 switch

The switch is configured correctly and we were able to access when it was give a public ip address. When we replaced the public ip with a private ip we were no longer able to access the device. We were wondering if we needed to alter our core router or core switch to identify the private ip address of the switch. Thanks, Chris.

Re: Use private ip address for 3550 switch

Hello,

you need to make this IP reachable inside your network.

Is this IP routable inside your network?

Vlad

Re: Use private ip address for 3550 switch

yes first of all check it out its rechability...means that ip should be reachable from router or switch or host from which you are tryig to access...

as mension in your previous post, the real ip is reachable and by private it is not...

if you are able to access using realip then you must be able to access using private...may be the private ip is publish or reachable in your network...\

and for further help look at this link:http://www.cisco.com/en/US/products/hw/switches/ps646/products_configuration_guide_chapter09186a00801f0a45.html#1046352

hope this will help you

rate this post if it helps

regards

Devang

New Member

Re: Use private ip address for 3550 switch

Hi Devang, Thank you for the link, but upon first glance this doesn't seem to answer my question. I will keep reviewing the doc to make sure and will rate if it helps. Thanks, Chris.

New Member

Re: Use private ip address for 3550 switch

Hi Vlad, I thought they were, but upon second check, I don't see it designated in our core router. This is probably it, what would be the best way to make the private ip routable inside our network? Is there any handy documentation? Thanks, Chris.

Re: Use private ip address for 3550 switch

just publish that private ip address in your routing protocol ...

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