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New Member

Access problem to a Cisco 3500XL

What will happen with a switch if another node e.g. a printer gets the same IP address at VLAN1 on the switch?

That is what happened for me. Someone accidentally give a printer the same IP address as VLAN1 on one of two switches. Nobody noted it because the printer and the switch worked well, until one day I should Telnet the switch

Then I gave the printer another IP and cleared the DHCP address pool. But I still can’t telnet or ping the switch. Otherwise the switch works fine.

Via the command “show cdp neighbour detail” on the neighbour switch, I can verify that it is the correct IP address I try to connect to, and of course I’ve Telnetted the switch before.

Why can’t I get in contact with the switch? Nothing has changed on the switch.

Is it really necessary to reboot it?

TIA

9 REPLIES

Re: Access problem to a Cisco 3500XL

HI

can u try this

interface vlan 1

shut

no shut

Thanks

Mahmood

New Member

Re: Access problem to a Cisco 3500XL

Hi Mahmood

Maybe I could, but I don't have physical acces to the switch, unless I drive 200 KM :-(

I hoped that I could do something remote ;-)

Thanks

Re: Access problem to a Cisco 3500XL

On the router/layer3 switch at the site do a 'clear arp' and try getting to it?

Pls. rate the post if it helped.

HTH,

Sundar

New Member

Re: Access problem to a Cisco 3500XL

Hi Sundar

Thanks for your suggestion. Unfortunately it didn’t help.

Re: Access problem to a Cisco 3500XL

ALso try clearing the Redirects

Clear ip redirects

New Member

Re: Access problem to a Cisco 3500XL

Try getting into the GUI rather than Telnet. Use a browser and go to the VLAN 1 IP address.

I've had similar issues and this seems to work.

Jim

Purple

Re: Access problem to a Cisco 3500XL

Go to the router it is attached to then source your telnet from the directly attached interface and see if you can get to it that way , this will rule out a default gateway problem .

New Member

Re: Access problem to a Cisco 3500XL

Tried that to - didn’t helped.

New Member

Re: Access problem to a Cisco 3500XL

Had a similar problem once. Got someone to power the switch off/on, all cured. Drastic but.....

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