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Contributor

Catalyst Exrpess 520 sends TCP RST

Hi,

I have one out of three Catalyst Express 520's I cannot connect to with Cisco Configuration Assistant or with a browser. I've used Wireshark to capture the problem, and it sends a TCP RST packet immediately upon any such connection attempt.

As these devices do not have a console port, how can I gain access to the device? We'd like to upgrade them but cannot pull the existing config.

Since these 520's don't support or are not configured for telnet/ssh and the only connection I can make is with a broswer and CCA, I'm wondering if there is a way to get the config into a text file as normally done.

Thanks for any help.

4 REPLIES 4
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Hall of Fame Guru

Based on the description of the symptoms I would guess that the CE520 is configured with access controls that limit the source addresses that are able to establish management sessions. Would I be correct in assuming that your source address is in some subnet other than the subnet where the 520 is located? If so I would suggest trying to establish a session from a PC that is connected (and has a source address) within the subnet where the 520 is connected.

HTH

Rick

HTH

Rick
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Thanks. Forgot to mention I tried two different subnets.

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Looks like they have something called Access Direct Managed Mode, which should provide browser access to a directly connected laptop, but still no way to see the entire configuration in a text file so it seems.

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WARNING. Do not use the procedure referenced above called Access Direct Managed Mode found in the sparse documentation available for this device.

It will reboot the switch to factory defaults.

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