RE: cross-over roll-over : Here is THE simplest rule
Your analogy is incorrect, you do no use a cross over cable between a switch and a router, you must use a straight through cable. Switch to Switch or Hub to Hub, or client to router do require a crossover, client to switch, client to hub and router to switch/hub do not. Louie Since time immemorial and pre-industrial, 'greed' has been the accusation hurled at the rich by the concrete-bound illiterates who were unable to conceive of the source of wealth or of the motivation of those who produce it. -- Ayn Rand -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Pradeep Kumar Sent: Sunday, October 15, 2000 11:20 PM To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: cross-over roll-over : Here is THE simplest rule Client - Anything : Straight Switch -Hub/Switch- Router : Cross over Here is a handy hint for you Rover. Your name = Rover . This rhymes as " Cross- rover "..And Rover is into the business of connecting Switches and Routers , Therefore use " Cross-Rover". I am not playing the fool. I have seen very senior guys fumbling around for long hours when they realise the cable selection error. Ok bud. I am sure you will neve never make the error on cables Rover = Cross"rover = for Swiches -> Routers / Hubs -Original Message- From:Lists Wizard [EMAIL PROTECTED] Sent:Sun, 15 Oct 2000 20:47:54 -0600 To: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] Subject: cross-over roll-over and straight-through cables helo, What is general rule of thumb for cabling tow networking devices? In other words: when should I use cross-over, roll-over or straight-through cables to connect tow networking devices Thanks Rover _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ Visit http://www.visto.com/info, your free web-based communications center. Visto.com. Life on the Dot. _ 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]
RE: cross-over roll-over : Here is THE simplest rule
The rule is: connecting devices of the same OSI layer, use cross-over cable. connecting devices of different layers, use straight through. A workstation is considered layer3. Bernard Your analogy is incorrect, you do no use a cross over cable between a switch and a router, you must use a straight through cable. Switch to Switch or Hub to Hub, or client to router do require a crossover, client to switch, client to hub and router to switch/hub do not. Louie Since time immemorial and pre-industrial, 'greed' has been the accusation hurled at the rich by the concrete-bound illiterates who were unable to conceive of the source of wealth or of the motivation of those who produce it. -- Ayn Rand Client - Anything : Straight Switch -Hub/Switch- Router : Cross over Here is a handy hint for you Rover. Your name = Rover . This rhymes as " Cross- rover "..And Rover is into the business of connecting Switches and Routers , Therefore use " Cross-Rover". I am not playing the fool. I have seen very senior guys fumbling around for long hours when they realise the cable selection error. Ok bud. I am sure you will neve never make the error on cables Rover = Cross"rover = for Swiches -> Routers / Hubs helo, What is general rule of thumb for cabling tow networking devices? In other words: when should I use cross-over, roll-over or straight-through cables to connect tow networking devices Thanks Rover _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: cross-over roll-over : Here is THE simplest rule
When you want to connect DTE to DCE equipment you need a straight cable, if you want to connect DTE with DTE or DCE with DCE equipment you need a cross over cable. This sound good, but I am not sure is 100% accurate. Sebastien. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Louie Belt Sent: lundi 16 octobre 2000 15:40 To: 'Pradeep Kumar'; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: RE: cross-over roll-over : Here is THE simplest rule Your analogy is incorrect, you do no use a cross over cable between a switch and a router, you must use a straight through cable. Switch to Switch or Hub to Hub, or client to router do require a crossover, client to switch, client to hub and router to switch/hub do not. Louie Since time immemorial and pre-industrial, 'greed' has been the accusation hurled at the rich by the concrete-bound illiterates who were unable to conceive of the source of wealth or of the motivation of those who produce it. -- Ayn Rand -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Pradeep Kumar Sent: Sunday, October 15, 2000 11:20 PM To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: cross-over roll-over : Here is THE simplest rule Client - Anything : Straight Switch -Hub/Switch- Router : Cross over Here is a handy hint for you Rover. Your name = Rover . This rhymes as " Cross- rover "..And Rover is into the business of connecting Switches and Routers , Therefore use " Cross-Rover". I am not playing the fool. I have seen very senior guys fumbling around for long hours when they realise the cable selection error. Ok bud. I am sure you will neve never make the error on cables Rover = Cross"rover = for Swiches -> Routers / Hubs -Original Message- From:Lists Wizard [EMAIL PROTECTED] Sent:Sun, 15 Oct 2000 20:47:54 -0600 To: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] Subject: cross-over roll-over and straight-through cables helo, What is general rule of thumb for cabling tow networking devices? In other words: when should I use cross-over, roll-over or straight-through cables to connect tow networking devices Thanks Rover _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ Visit http://www.visto.com/info, your free web-based communications center. Visto.com. Life on the Dot. _ 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] _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: cross-over roll-over : Here is THE simplest rule
A good conclusion on this topic. I think Bernard just sums it up. I've seen some other digression and wrong assumptions. This shouldn't be. No mention was made of the use of the roll-over cable however. Bernard <[EMAIL PROTECTED]> on 10/16/2000 02:26:07 PM Please respond to Bernard <[EMAIL PROTECTED]> To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]> cc:(bcc: Babashola Madariola/C/Africa/Mobil-Notes) Subject: RE: cross-over roll-over : Here is THE simplest rule The rule is: connecting devices of the same OSI layer, use cross-over cable. connecting devices of different layers, use straight through. A workstation is considered layer3. Bernard Your analogy is incorrect, you do no use a cross over cable between a switch and a router, you must use a straight through cable. Switch to Switch or Hub to Hub, or client to router do require a crossover, client to switch, client to hub and router to switch/hub do not. Louie Since time immemorial and pre-industrial, 'greed' has been the accusation hurled at the rich by the concrete-bound illiterates who were unable to conceive of the source of wealth or of the motivation of those who produce it. -- Ayn Rand Client - Anything : Straight Switch -Hub/Switch- Router : Cross over Here is a handy hint for you Rover. Your name = Rover . This rhymes as " Cross- rover "..And Rover is into the business of connecting Switches and Routers , Therefore use " Cross-Rover". I am not playing the fool. I have seen very senior guys fumbling around for long hours when they realise the cable selection error. Ok bud. I am sure you will neve never make the error on cables Rover = Cross"rover = for Swiches -> Routers / Hubs helo, What is general rule of thumb for cabling tow networking devices? In other words: when should I use cross-over, roll-over or straight-through cables to connect tow networking devices Thanks Rover _ 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]
RE: cross-over roll-over : Here is THE simplest rule
>The rule is: >connecting devices of the same OSI layer, use cross-over cable. >connecting devices of different layers, use straight through. >A workstation is considered layer3. > >Bernard Excellent rule! I hadn't thought of it but it's very useful. > > > > >Your analogy is incorrect, you do no use a cross over cable between a switch >and a router, you must use a straight through cable. Switch to Switch or >Hub to Hub, or client to router do require a crossover, client to switch, >client to hub and router to switch/hub do not. > >Louie > > Since time immemorial and pre-industrial, 'greed' has been the >accusation >hurled at the rich by the concrete-bound illiterates who were unable to >conceive of the source of wealth or of the motivation of those who produce >it. > -- Ayn Rand > > > >Client - Anything : Straight >Switch -Hub/Switch- Router : Cross over > >Here is a handy hint for you Rover. Your name = Rover . This rhymes as " >Cross- rover "..And Rover is into the business of connecting Switches and >Routers , Therefore use " Cross-Rover". > >I am not playing the fool. I have seen very senior guys fumbling around for >long hours when they realise the cable selection error. > >Ok bud. I am sure you will neve never make the error on cables Rover = >Cross"rover = for Swiches -> Routers / Hubs > > > >helo, > >What is general rule of thumb for cabling tow networking devices? In other >words: when should I use cross-over, roll-over or straight-through cables to >connect tow networking devices > >Thanks > >Rover > >_ >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]
Re: cross-over roll-over : Here is THE simplest rule
How about when you connect a workstation to a modem will this rule apply? I think not. This rule will only be applicable to LAN devices but for WAN devices the rule as Sebastian pointed out should be applied. >>The rule is: >>connecting devices of the same OSI layer, use cross-over cable. >>connecting devices of different layers, use straight through. >>A workstation is considered layer3. >> >>Bernard _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: cross-over roll-over : Here is THE simplest rule
H, let me think. I never thought of that, that someday we will be connecting a workstation to a modem with a Cat5 cable. Workstation to a modem, ? no the rule does not apply How about a TV to a VCR? no, it does not apply neither. How about the toaster? nooope. You are right, that is not a good rule. Don't use it. Bernard How about when you connect a workstation to a modem will this rule apply? I think not. This rule will only be applicable to LAN devices but for WAN devices the rule as Sebastian pointed out should be applied. >>The rule is: >>connecting devices of the same OSI layer, use cross-over cable. >>connecting devices of different layers, use straight through. >>A workstation is considered layer3. >> >>Bernard _ 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]
Re: cross-over roll-over : Here is THE simplest rule
well, a cable "modem" attaches with a Cat5 cable. Haven't seen one but the xDSL "modem" probably does too. I have a buddy who makes a DB9/DB25 custom plug and uses Cat5 between them for just about everything. Kevin Wigle CCDP/CCNP. - Original Message - From: "Ben" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, October 17, 2000 1:14 AM Subject: RE: cross-over roll-over : Here is THE simplest rule > H, let me think. I never thought of that, that someday we will be > connecting a workstation to a modem with a Cat5 cable. > Workstation to a modem, ? no the rule does not apply > How about a TV to a VCR? no, it does not apply neither. > How about the toaster? nooope. > > You are right, that is not a good rule. Don't use it. > > Bernard > > > > > > How about when you connect a workstation to a modem will this rule apply? I > think not. > This rule will only be applicable to LAN devices but for WAN devices the > rule as Sebastian pointed out should be applied. > > > >>The rule is: > >>connecting devices of the same OSI layer, use cross-over cable. > >>connecting devices of different layers, use straight through. > >>A workstation is considered layer3. > >> > >>Bernard > > > _ > 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] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: cross-over roll-over : Here is THE simplest rule
I dont know with you but I can connect my workstation directly to a modem . Ever heard of a serial port?The reason that you can connect a workstaion to a LAN devices is that it has LAN device which is the NIC card. And dont ever tell us that a workstaion is a layer 3 devices cause its not . Does a workstation ever do routing? Its not even a layer 4, 5, 6, or 7 by itself. But if you put in the software or hardware that will enable it to do this things then it can be any of these. >H, let me think. I never thought of that, that someday we will be >connecting a workstation to a modem with a Cat5 cable. >Workstation to a modem, ? no the rule does not apply >How about a TV to a VCR? no, it does not apply neither. >How about the toaster? nooope. > >You are right, that is not a good rule. Don't use it. > >Bernard > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: cross-over roll-over : Here is THE simplest rule
Oh God, are we all gonna have to learn what DCE and DTE are??? NO Anything but that.. hehehe [=`) Dale >From: "Kevin Wigle" <[EMAIL PROTECTED]> >Reply-To: "Kevin Wigle" <[EMAIL PROTECTED]> >To: "Ben" <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> >Subject: Re: cross-over roll-over : Here is THE simplest rule >Date: Tue, 17 Oct 2000 09:29:40 -0400 > >well, a cable "modem" attaches with a Cat5 cable. > >Haven't seen one but the xDSL "modem" probably does too. > >I have a buddy who makes a DB9/DB25 custom plug and uses Cat5 between them >for just about everything. > >Kevin Wigle >CCDP/CCNP. > >- Original Message - >From: "Ben" <[EMAIL PROTECTED]> >To: <[EMAIL PROTECTED]> >Sent: Tuesday, October 17, 2000 1:14 AM >Subject: RE: cross-over roll-over : Here is THE simplest rule > > > > H, let me think. I never thought of that, that someday we will be > > connecting a workstation to a modem with a Cat5 cable. > > Workstation to a modem, ? no the rule does not apply > > How about a TV to a VCR? no, it does not apply neither. > > How about the toaster? nooope. > > > > You are right, that is not a good rule. Don't use it. > > > > Bernard > > > > > > > > > > > > How about when you connect a workstation to a modem will this rule >apply? >I > > think not. > > This rule will only be applicable to LAN devices but for WAN devices the > > rule as Sebastian pointed out should be applied. > > > > > > >>The rule is: > > >>connecting devices of the same OSI layer, use cross-over cable. > > >>connecting devices of different layers, use straight through. > > >>A workstation is considered layer3. > > >> > > >>Bernard > > > > > > _ > > 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] > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: cross-over roll-over : Here is THE simplest rule
take it outside. - Original Message - From: "Jojo" <[EMAIL PROTECTED]> To: "Ben" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Tuesday, October 17, 2000 9:36 AM Subject: Re: cross-over roll-over : Here is THE simplest rule > I dont know with you but I can connect my workstation directly to a modem > Ever heard of a serial port?The reason that you can connect a workstaion > to a LAN devices is that it has LAN device which is the NIC card. And dont > ever tell us that a workstaion is a layer 3 devices cause its not . Does a > workstation ever do routing? Its not even a layer 4, 5, 6, or 7 by itself. > But if you put in the software or hardware that will enable it to do this > things then it can be any of these. > > > >H, let me think. I never thought of that, that someday we will be > >connecting a workstation to a modem with a Cat5 cable. > >Workstation to a modem, ? no the rule does not apply > >How about a TV to a VCR? no, it does not apply neither. > >How about the toaster? nooope. > > > >You are right, that is not a good rule. Don't use it. > > > >Bernard > > > > > _ > 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]
Re: cross-over roll-over : Here is THE simplest rule
If you connect you workstation directly to a router both would are layer 3 devices, and would require a crossover cable. If you connect two Cisco routers you need to use a crossover cable (DCE-DTE back-to-back) because both are layer 3 devices. When connecting a Workstation(layer 3) to a Switch(layer 2) you use a straight through cable. Each of these scenarios prove Bernard's basic rule. Your example about a PC and a modem also proves his point. A workstation is a layer 3 device because it is using TCP/IP (or IPX). The modem is a layer 2 device, using PPP as a Layer 2 protocol. Therefore you do not need a crossover cable between the two. After the modem connects to ISP (with PPP), TCP/IP can travel over the link. You can also think of it as workstation is a DTE and modem is a DCE, because that is true in that case. Tim - Original Message - From: "Jojo" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, October 16, 2000 8:22 PM Subject: Re: cross-over roll-over : Here is THE simplest rule > How about when you connect a workstation to a modem will this rule apply? I > think not. > This rule will only be applicable to LAN devices but for WAN devices the > rule as Sebastian pointed out should be applied. > > > >>The rule is: > >>connecting devices of the same OSI layer, use cross-over cable. > >>connecting devices of different layers, use straight through. > >>A workstation is considered layer3. > >> > >>Bernard > > > _ > 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]
RE: cross-over roll-over : Here is THE simplest rule
Ok, but if a router is configured only for transparent bridging (layer 2) a crossover cable is still needed to connect to another router or a workstation even though the router is acting as a layer 2 device only. . LAB Since time immemorial and pre-industrial, 'greed' has been the accusation hurled at the rich by the concrete-bound illiterates who were unable to conceive of the source of wealth or of the motivation of those who produce it. -- Ayn Rand -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Tim Ross Sent: Wednesday, October 18, 2000 9:41 PM To: Jojo; [EMAIL PROTECTED] Subject: Re: cross-over roll-over : Here is THE simplest rule If you connect you workstation directly to a router both would are layer 3 devices, and would require a crossover cable. If you connect two Cisco routers you need to use a crossover cable (DCE-DTE back-to-back) because both are layer 3 devices. When connecting a Workstation(layer 3) to a Switch(layer 2) you use a straight through cable. Each of these scenarios prove Bernard's basic rule. Your example about a PC and a modem also proves his point. A workstation is a layer 3 device because it is using TCP/IP (or IPX). The modem is a layer 2 device, using PPP as a Layer 2 protocol. Therefore you do not need a crossover cable between the two. After the modem connects to ISP (with PPP), TCP/IP can travel over the link. You can also think of it as workstation is a DTE and modem is a DCE, because that is true in that case. Tim - Original Message - From: "Jojo" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, October 16, 2000 8:22 PM Subject: Re: cross-over roll-over : Here is THE simplest rule > How about when you connect a workstation to a modem will this rule apply? I > think not. > This rule will only be applicable to LAN devices but for WAN devices the > rule as Sebastian pointed out should be applied. > > > >>The rule is: > >>connecting devices of the same OSI layer, use cross-over cable. > >>connecting devices of different layers, use straight through. > >>A workstation is considered layer3. > >> > >>Bernard > > > _ > 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] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: cross-over roll-over : Here is THE simplest rule
Cisco cables are already expensive. Don't give them ideas like requiring a separate cable for every configuration possible. Tim - Original Message - From: "Louie Belt" <[EMAIL PROTECTED]> To: "'Tim Ross'" <[EMAIL PROTECTED]>; "'Jojo'" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Wednesday, October 18, 2000 8:18 PM Subject: RE: cross-over roll-over : Here is THE simplest rule > Ok, but if a router is configured only for transparent bridging (layer 2) a > crossover cable is still needed to connect to another router or a > workstation even though the router is acting as a layer 2 device only. > . > > LAB > > > > Since time immemorial and pre-industrial, 'greed' has been the accusation > hurled at the rich by the concrete-bound illiterates who were unable to > conceive of the source of wealth or of the motivation of those who produce > it. > -- Ayn Rand > > > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Tim Ross > Sent: Wednesday, October 18, 2000 9:41 PM > To: Jojo; [EMAIL PROTECTED] > Subject: Re: cross-over roll-over : Here is THE simplest rule > > > If you connect you workstation directly to a router both would are layer 3 > devices, and would require a crossover cable. If you connect two Cisco > routers you need to use a crossover cable (DCE-DTE back-to-back) because > both are layer 3 devices. When connecting a Workstation(layer 3) to a > Switch(layer 2) you use a straight through cable. Each of these scenarios > prove Bernard's basic rule. Your example about a PC and a modem also proves > his point. A workstation is a layer 3 device because it is using TCP/IP (or > IPX). The modem is a layer 2 device, using PPP as a Layer 2 protocol. > Therefore you do not need a crossover cable between the two. After the modem > connects to ISP (with PPP), TCP/IP can travel over the link. You can also > think of it as workstation is a DTE and modem is a DCE, because that is true > in that case. > > Tim > > - Original Message - > From: "Jojo" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Monday, October 16, 2000 8:22 PM > Subject: Re: cross-over roll-over : Here is THE simplest rule > > > > How about when you connect a workstation to a modem will this rule apply? > I > > think not. > > This rule will only be applicable to LAN devices but for WAN devices the > > rule as Sebastian pointed out should be applied. > > > > > > >>The rule is: > > >>connecting devices of the same OSI layer, use cross-over cable. > > >>connecting devices of different layers, use straight through. > > >>A workstation is considered layer3. > > >> > > >>Bernard > > > > > > _ > > 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] > > _ > 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]
RE: cross-over roll-over : Here is THE simplest rule
On Mar 8, 3:01am, Bernard wrote: } } The rule is: } connecting devices of the same OSI layer, use cross-over cable. } connecting devices of different layers, use straight through. Hubs are at layer 1 and switches are at layer 2. If you're connecting a hub to a switch, you need to use a crossover cable. So, this rule doesn't work. The real rule is, if you're connecting a hub/switch to a hub/switch use a crossover, otherwise use a straight through cable. }-- End of excerpt from Bernard _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
