Re: [foxboro] Mac Address

In addition, the MAC addresses are known by the LIs
to aid in routing IA packets around the Site LAN

Why would anyone want to fool around with this ?


wrb

>From: "Johnson, Alex (Foxboro)" <ajohnson@xxxxxxxxxxx>
>Reply-To: foxboro@xxxxxxxxxxxxx
>To: foxboro@xxxxxxxxxxxxx
>Subject: Re: [foxboro] Mac Address
>Date: Fri, 10 May 2002 09:23:01 -0400
>MIME-Version: 1.0
>Received: from [206.53.239.180] by hotmail.com (3.2) with ESMTP id 
>MHotMailBEA5151A00314004324ECE35EFB405C10; Fri, 10 May 2002 06:24:43 -0700
>Received: from turing.(none) (localhost [127.0.0.1])by turing.freelists.org 
>(FreeLists Mail Multiplex) with ESMTPid D22A394324; Fri, 10 May 2002 
>08:22:51 -0500 (EST)
>Received: with ECARTIS (v1.0.0; list foxboro); Fri, 10 May 2002 08:21:58 
>-0500 (EST)
>Received: from fox-nep25-xch.foxboro.com (foxboro-fw.invensyssystems.com 
>[65.204.211.10])by turing.freelists.org (FreeLists Mail Multiplex) with 
>ESMTP id C63C3942BFfor <foxboro@xxxxxxxxxxxxx>; Fri, 10 May 2002 08:21:57 
>-0500 (EST)
>Received: by fox-nep25-xch.foxboro.com with Internet Mail Service 
>(5.5.2655.55)id <KNC98JTT>; Fri, 10 May 2002 09:23:03 -0400
>From foxboro-bounce@xxxxxxxxxxxxx Fri, 10 May 2002 06:25:05 -0700
>Delivered-To: foxboro@xxxxxxxxxxxxx
>Message-ID: <B850F4BD354D18409EB6F0A71D05203FB64D3F@ips-hso80-xch>
>X-Mailer: Internet Mail Service (5.5.2655.55)
>X-archive-position: 1405
>X-ecartis-version: Ecartis v1.0.0
>Sender: foxboro-bounce@xxxxxxxxxxxxx
>Errors-To: foxboro-bounce@xxxxxxxxxxxxx
>X-original-sender: ajohnson@xxxxxxxxxxx
>Precedence: normal
>X-list: foxboro
>
>
>MAC addresses are the fundamental addressing mechanism in any Ethernet 
>based
>LAN.
>
>Each Ethernet chip manufacturer is given a range of MAC addresses that they
>may build into their E'net chips.
>
>MAC addresses are unique. In the entire world, no two chips are to have the
>same MAC address.
>
>
>In the I/A Series, we override the MAC of our FT stations so that each
>station has the same address. SysDef ensures that no two stations in the
>same control system have the same MAC address.
>
>Since the MAC addresses are the same both members of an FT pair get the 
>same
>messages from other stations. This is required for FT to work.
>
>Hope this helps.
>
>Regards,
>
>
>Alex Johnson
>System Products - Invensys Systems, Inc.
>10707 Haddington
>Houston, TX 77043
>713.722.2859 (office)
>713.722.2700 (switchboard)
>713.932.0222 (fax)
>ajohnson@xxxxxxxxxxx <mailto:ajohnson@xxxxxxxxxxx>
>Come to the Invensys Showcase: http://www.invensysshowcase.com/
><http://www.invensysshowcase.com/>
>
>
>       -----Original Message-----
>       From:   Chetan_R_Jobanputra@xxxxxxx
>[SMTP:Chetan_R_Jobanputra@xxxxxxx]
>       Sent:   Friday, May 10, 2002 12:42 AM
>       To:     foxboro@xxxxxxxxxxxxx
>       Subject:        Re: [foxboro] Mac Address
>
>
>
>       Not that much urgent. Not any problem .
>
>       Regards,
>
>       CRJ
>
>
>
>
>       Chetan_R_Jobanputra@xxxxxxx@freelists.org on 10/05/2002 11:01:16
>
>       Please respond to foxboro@xxxxxxxxxxxxx
>
>       Sent by:  foxboro-bounce@xxxxxxxxxxxxx
>
>
>       To:   foxboro@xxxxxxxxxxxxx
>       cc:
>       Subject:  [foxboro] Mac Address
>
>
>
>
>
>
>       Hello Friends,
>
>       What is the significance of each digit of 12 digit MAC Address of IA
>       Modules?What this No. represents ?
>
>
>
>       Regards,
>
>       Chetan R J
>       RPL Refinery ,
>       Jamnagar, India
>
>
>
>
>_______________________________________________________________________
>       This mailing list is neither sponsored nor endorsed by Invensys
>Process
>       Systems (formerly The Foxboro Company). Use the info you obtain here
>at
>       your own risks. Read
>http://www.thecassandraproject.org/disclaimer.html
>
>       foxboro mailing list:
>http://www.freelists.org/list/foxboro
>       to subscribe:
>mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
>       to unsubscribe:
>mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave
>
>
>
>
>
>
>
>_______________________________________________________________________
>       This mailing list is neither sponsored nor endorsed by Invensys
>Process
>       Systems (formerly The Foxboro Company). Use the info you obtain here
>at
>       your own risks. Read
>http://www.thecassandraproject.org/disclaimer.html
>
>       foxboro mailing list:
>http://www.freelists.org/list/foxboro
>       to subscribe:
>mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
>       to unsubscribe:
>mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave
>
>
>
>_______________________________________________________________________
>This mailing list is neither sponsored nor endorsed by Invensys Process
>Systems (formerly The Foxboro Company). Use the info you obtain here at
>your own risks. Read http://www.thecassandraproject.org/disclaimer.html
>
>foxboro mailing list:             http://www.freelists.org/list/foxboro
>to subscribe:         mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
>to unsubscribe:      mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave
>




_________________________________________________________________
Chat with friends online, try MSN Messenger: http://messenger.msn.com

 
 
_______________________________________________________________________
This mailing list is neither sponsored nor endorsed by Invensys Process
Systems (formerly The Foxboro Company). Use the info you obtain here at
your own risks. Read http://www.thecassandraproject.org/disclaimer.html
 
foxboro mailing list:             http://www.freelists.org/list/foxboro
to subscribe:         mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
to unsubscribe:      mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave

Other related posts: