MACAuthentication would also work From: Nick Allen [mailto:[email protected]] Sent: Tuesday, March 08, 2011 9:29 AM To: Enterasys Customer Mailing List Cc: Read, Simon Subject: Re: [enterasys] Cross-connected switch...
Sorry - I should have been more verbose. What' I'd really like to happen is that the port would somehow detect that it's a rogue connection and shut off that port so that inter-connection can't happen in the first place. N. On 8 March 2011 14:19, Read, Simon <[email protected]<mailto:[email protected]>> wrote: Hi Nick, Use Policy to only allow DHCP from a specific server? Kind regards, Simon Read Service Engineer Nashua Communications (Pty) Ltd. Unit 10 Growthpoint Business Park, No 2 Tonnetti Street, Midrand, 1685 M: +27 84 676 9200 Fax: +27100012500 [email protected]<mailto:[email protected]> www.nashua-communications.com<http://www.nashua-communications.com> [Nashua Communications EMAIL Logo2.gif] From: Nick Allen [mailto:[email protected]<mailto:[email protected]>] Sent: 08 March 2011 04:05 PM To: Enterasys Customer Mailing List Subject: [enterasys] Cross-connected switch... Hi, We have an office with an Enterasys C2G in it. Also in that office and in the same cabinet is a Cisco switch that belongs to another sister company. Devices plugged in the Cisco switch were getting IP address in the DHCP range that would normally be only available on the C2. We traced it with Compass to an IP phone with the passthrough port plugged into the Cisco switch instead of a workstation. What's the best way to prevent this happening from a config point of view on the Enterasys only (given that we don't have access to the Cisco). Thanks, Nick. C4-2C-03-29-E8-FE 10.113.11.1 -- This e-mail is intended only for the named person or entity to which it is addressed and contains valuable business information that is proprietary, privileged, confidential and/or otherwise protected from disclosure. If you received this e-mail in error, any review, use, dissemination, distribution or copying of this e-mail is strictly prohibited. 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