OT: Tcpip Transmission over RS232
Hi All, Just a thought on Whether Tcp/Ip can run over RS232 Interfaces. Any comments please ? Regds Amit __ Do You Yahoo!? Yahoo! Auctions - Buy the things you want at great prices! http://auctions.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: OT: Tcpip Transmission over RS232
>From: ElephantChild <[EMAIL PROTECTED]> >Reply-To: ElephantChild <[EMAIL PROTECTED]> >To: Amit Gupta <[EMAIL PROTECTED]> >CC: [EMAIL PROTECTED] >Subject: Re: OT: Tcpip Transmission over RS232 >Date: Thu, 22 Feb 2001 10:59:58 +0100 (CET) > >On Thu, 22 Feb 2001, Amit Gupta wrote: > > > Hi All, > > > > Just a thought on Whether Tcp/Ip can run over RS232 > > Interfaces. > >Hmm, IP can run on low-speed serial links, no matter what the shape, >number of pins, and signal definitions for the connector are, so I guess >that the answer to your question, as asked, is yes. > >But I have a nagging feeling that you mean something else. Could you >elaborate? Because IP is a network layer protocol, and RS232 (V.24 for the Europeans) is a physical layer protocol, you need a data link layer to bridge the gap. SLIP or PPP fill this gap, and is the most common way of encapsulating IP over Async connections. (I assume you mean async, not sync, in which case, use LAPB, HDLC or PPP) Robert Nelson-Cox, Bsc CCNP CCDP CCIE Cand. Managing Director Nelsons Networks Ltd Warwickshire United Kingdom Phone: +44 24 76742500 Fax: +44 24 76742501 GSM: +44 7713 275183 E-Mail: [EMAIL PROTECTED] URL: www.nelsonsnetworks.com _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: OT: Tcpip Transmission over RS232
At 01:07 AM 2/22/01, Amit Gupta wrote: >Hi All, > >Just a thought on Whether Tcp/Ip can run over RS232 >Interfaces. Can't see why not. You could get TCP/IP running over a coat hanger if you tried enough. Seriously, a terminal server can enable PCs to connect via RS-232 to a TCP/IP network. Priscilla >Any comments please ? > > >Regds > >Amit > >__ >Do You Yahoo!? >Yahoo! Auctions - Buy the things you want at great prices! >http://auctions.yahoo.com/ > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Priscilla Oppenheimer http://www.priscilla.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: OT: Tcpip Transmission over RS232
>At 01:07 AM 2/22/01, Amit Gupta wrote: >>Hi All, >> >>Just a thought on Whether Tcp/Ip can run over RS232 >>Interfaces. > >Can't see why not. You could get TCP/IP running over a coat hanger if you >tried enough. Seriously, a terminal server can enable PCs to connect via RS-232 to a TCP/IP network. >Priscilla The most extreme demonstration I've seen is running TCP over Telnet (which was itself running over a different TCP session). On the continuing thread of such demonstration, having a toaster controlled by SNMP goes into near-antiquity (for this field). Having a messaging protocol controlling a robotic arm that took bread in and out of the toaster, however, was rather elegant. _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: OT: Tcpip Transmission over RS232
Hi All, SLIP This runs IP on serial interfaces. PPP over modems runs via serial interfaces as do a lot of other things. Slip will do fine as I understand it between two devices. Teunis Hobart, Tasmania Australia On Thursday, February 22, 2001 at 10:23:35 AM, Robert Nelson-Cox wrote: > >From: ElephantChild <[EMAIL PROTECTED]> > >Reply-To: ElephantChild <[EMAIL PROTECTED]> > >To: Amit Gupta <[EMAIL PROTECTED]> > >CC: [EMAIL PROTECTED] > >Subject: Re: OT: Tcpip Transmission over RS232 > >Date: Thu, 22 Feb 2001 10:59:58 +0100 (CET) > > > >On Thu, 22 Feb 2001, Amit Gupta wrote: > > > > > Hi All, > > > > > > Just a thought on Whether Tcp/Ip can run over RS232 > > > Interfaces. > > > >Hmm, IP can run on low-speed serial links, no matter what the shape, > >number of pins, and signal definitions for the connector are, so I guess > >that the answer to your question, as asked, is yes. > > > >But I have a nagging feeling that you mean something else. Could you > >elaborate? > > Because IP is a network layer protocol, and RS232 (V.24 for the Europeans) > is a physical layer protocol, you need a data link layer to bridge the gap. > SLIP or PPP fill this gap, and is the most common way of encapsulating IP > over Async connections. (I assume you mean async, not sync, in which case, > use LAPB, HDLC or PPP) > > Robert Nelson-Cox, Bsc CCNP CCDP CCIE Cand. > Managing Director > Nelsons Networks Ltd > Warwickshire > United Kingdom > Phone: +44 24 76742500 > Fax: +44 24 76742501 > GSM: +44 7713 275183 > E-Mail: [EMAIL PROTECTED] > URL: www.nelsonsnetworks.com > > _ > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > -- www.tasmail.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: OT: Tcpip Transmission over RS232
Here's a response that someone sent directly to me. I thought it was worth sharing with the group. I don't know if it's true, but it could generate some good discussion... >Back to back rs-232 DCE/DTE. Just like v.35 but, up to 128 kb/s you can >run HDLC, PPP and or Frame obviously w/ a frame switch. > > > > >From: Priscilla Oppenheimer > >Reply-To: Priscilla Oppenheimer > >To: [EMAIL PROTECTED] > >Subject: Re: OT: Tcpip Transmission over RS232 > >Date: Thu, 22 Feb 2001 11:15:19 -0800 > > > >At 01:07 AM 2/22/01, Amit Gupta wrote: > > >Hi All, > > > > > >Just a thought on Whether Tcp/Ip can run over RS232 > > >Interfaces. > > > >Can't see why not. You could get TCP/IP running over a coat hanger if you > >tried enough. Seriously, a terminal server can enable PCs to connect via > >RS-232 to a TCP/IP network. > > > >Priscilla > > > > > > >Any comments please ? > > > > > > > > >Regds > > > > > >Amit Priscilla Oppenheimer http://www.priscilla.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: OT: Tcpip Transmission over RS232
> >Back to back rs-232 DCE/DTE. Just like v.35 but, up to 128 kb/s you can > >run HDLC, PPP and or Frame obviously w/ a frame switch. I would guess that this would also be possible with back-to-back DTE cables using a null modem adaptor. Has anyone tried this before? Adam - Original Message - From: "Priscilla Oppenheimer" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, February 23, 2001 8:06 AM Subject: Re: OT: Tcpip Transmission over RS232 > Here's a response that someone sent directly to me. I thought it was worth > sharing with the group. I don't know if it's true, but it could generate > some good discussion... > > > >Back to back rs-232 DCE/DTE. Just like v.35 but, up to 128 kb/s you can > >run HDLC, PPP and or Frame obviously w/ a frame switch. > > > > > > > > >From: Priscilla Oppenheimer > > >Reply-To: Priscilla Oppenheimer > > >To: [EMAIL PROTECTED] > > >Subject: Re: OT: Tcpip Transmission over RS232 > > >Date: Thu, 22 Feb 2001 11:15:19 -0800 > > > > > >At 01:07 AM 2/22/01, Amit Gupta wrote: > > > >Hi All, > > > > > > > >Just a thought on Whether Tcp/Ip can run over RS232 > > > >Interfaces. > > > > > >Can't see why not. You could get TCP/IP running over a coat hanger if you > > >tried enough. Seriously, a terminal server can enable PCs to connect via > > >RS-232 to a TCP/IP network. > > > > > >Priscilla > > > > > > > > > >Any comments please ? > > > > > > > > > > > >Regds > > > > > > > >Amit > > > > > Priscilla Oppenheimer > http://www.priscilla.com > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
