But for Xconnects the Frame-Relay PVC is terminated on the Router locally.
There is not Frame-Relay Switch. It is just like Back to Back Frame relay.
-- Paul Negron CCIE# 14856 CCSI# 22752 Senior Technical Instructor www.micronicstraining.com > From: Carlos G Mendioroz <tron_at_huapi.ba.ar> > Reply-To: Carlos G Mendioroz <tron_at_huapi.ba.ar> > Date: Wed, 25 Aug 2010 20:24:57 -0300 > To: Narbik Kocharians <narbikk_at_gmail.com> > Cc: Kambiz Agahian <aussiecert_at_gmail.com>, selamat pagi <ketimun_at_gmail.com>, > Cisco certification <ccielab_at_groupstudy.com> > Subject: Re: Frame-relay again > > Oh my. > A long long time ago people used to say that routers had two functions: > they route (as in routing protocols) and switch (as in switching > packets). New age terms seem to be control plane and data plane > services. > > Fact is that you *can* do one without the other: you can switch and run > no routing protocols, like when you do static routes. You can do routing > and no switching, like a route reflector in a NAP. > > Back to frame relay, a frame relay switch main function is to do data > plane switching services, copy frames from one link based on a xconnect > table that maps a DLCI to some other link, possibly another DLCI. > You don't need LMI up to do so. (Although in real life, I wonder why > would you do such a thing). > > LMI runs on one DLCI to enable DTE to DCE control plane exchange. > If you disable it, you can still make the FR switch to switch frames, > some FR switches at least can do so. > > Am I talking nonsense ? > -Carlos > > Narbik Kocharians @ 25/08/2010 20:05 -0300 dixit: >> Carlos, >> >> If the LMIs are disabled (No keep) you won't talk to the Frame-relay >> switch, if you are not communicating with the frame switch, it means >> that you are not exchanging type 1 messages with Switch, nor >> sending Type 0 messages to the switch and as a result of that you won't >> get the DLCI info from the switch. So what do you mean the data plane >> will work? If the control plane is NOT there, how could the data plane >> work? and what do you mean by switching data plane services???? Can you >> be a little more clear? >> >> >> On Wed, Aug 25, 2010 at 3:26 PM, Kambiz Agahian <aussiecert_at_gmail.com >> <mailto:aussiecert_at_gmail.com>> wrote: >> >> Just keep in mind that the FR world did exist before LMI and can >> exist after that... :) >> >> >> >> Kambiz Agahian >> CCIE Instructor/Consultant >> M.Eng Telecom, CCIE# 25341, CCSI# 33326, MCSE, MCSA >> >> >> On Wed, Aug 25, 2010 at 3:13 PM, Carlos G Mendioroz >> <tron_at_huapi.ba.ar <mailto:tron_at_huapi.ba.ar>> wrote: >> >> You got me wrong there. >> If you disable LMI, you loose pvc management (knowledge of what the >> frame relay switch is doing and state of remote link) but you still >> can have the switching (data plane) service. >> >> Problem is, if the remote end is paying attention to LMI, the >> remote DTE >> will consider the link down and you might loose connectivity. >> >> -Carlos >> >> Narbik Kocharians @ 25/08/2010 19:07 -0300 dixit: >>> I agree with Carlos, if you disable the LMIs, then you are >> saying i do >>> not need the Frame-relay switching services, and connectivity >> is lost, >>> unless you configure the routers back to back which is NOT >> what you are >>> asking for. Paul's solution should do the trick, that's if i >> understand >>> your scenario correctly. >>> >>> On Wed, Aug 25, 2010 at 1:11 PM, Carlos G Mendioroz >> <tron_at_huapi.ba.ar <mailto:tron_at_huapi.ba.ar> >>> <mailto:tron_at_huapi.ba.ar <mailto:tron_at_huapi.ba.ar>>> wrote: >>> >>> basically you are saying that i don't need the switch >> *management* >>> any more. >>> >>> You still need its switching services :) >>> -Carlos >>> P.S. >>> hahahaha >>> >>> Narbik Kocharians @ 25/8/2010 16:21 -0300 dixit: >>> >>> If you disable the LMIs, then, you are NOT going to >> get any DLCI >>> info from >>> the switch, basically you are saying that i don't need the >>> switch any more. >>> But if this is what you want to do then, enter "NO >> Keep" under your >>> frame-relay interface. You typically do this when you >> have a >>> back to back >>> frame-relay configuration without using the >> Frame-relay switch. >>> Is this what you wanted? >>> >>> On Thu, Aug 26, 2010 at 5:11 AM, selamat pagi >> <ketimun_at_gmail.com <mailto:ketimun_at_gmail.com> >>> <mailto:ketimun_at_gmail.com <mailto:ketimun_at_gmail.com>>> >> wrote: >>> >>> Yep, disabled inverse arp and reloaded. This >> clears out the >>> mappings in *sh >>> fram map.* >>> However, the all the other pvc are still in *sh >> frame pvc.* >>> >>> Carlos, how you disable LMI without changing config on >>> FR-switch (keepalive >>> is enable on FR-switch) >>> >>> cheers, keti >>> >>> >>> >>> On Wed, Aug 25, 2010 at 8:24 PM, Paul Negron >>> <negron.paul_at_gmail.com >> <mailto:negron.paul_at_gmail.com> <mailto:negron.paul_at_gmail.com >> <mailto:negron.paul_at_gmail.com>>> >>> wrote: >>> >>> Did you try disabling Inverse arp and >> reloading the router? >>> >>> Paul >>> -- >>> Paul Negron >>> CCIE# 14856 CCSI# 22752 >>> Senior Technical Instructor >>> www.micronicstraining.com >> <http://www.micronicstraining.com/> >>> <http://www.micronicstraining.com/> >>> >>> >>> >>> From: selamat pagi <ketimun_at_gmail.com >> <mailto:ketimun_at_gmail.com> >>> <mailto:ketimun_at_gmail.com >> <mailto:ketimun_at_gmail.com>>> >>> Reply-To: selamat pagi <ketimun_at_gmail.com >> <mailto:ketimun_at_gmail.com> >>> <mailto:ketimun_at_gmail.com >> <mailto:ketimun_at_gmail.com>>> >>> Date: Wed, 25 Aug 2010 20:07:44 +0200 >>> To: Cisco certification >> <ccielab_at_groupstudy.com <mailto:ccielab_at_groupstudy.com> >>> <mailto:ccielab_at_groupstudy.com >> <mailto:ccielab_at_groupstudy.com>>> >>> Subject: Frame-relay again >>> >>> I know this has been discussed several >> times here, >>> but I still don't >>> have/understand the solution. >>> If there is none, I just will believe it >> and can >>> continue with >>> >>> something >>> >>> more interesting :-) >>> >>> QUESTION: >>> Is there a way to avoid that the FR-switch >> responds >>> with all the DLCI >>> configured ? >>> So we will only see our configured PVC in >> the output >>> of "sh >>> >>> frame-relay >>> >>> pvc" >>> >>> (assumed the FR-switch config cannot be >> changed ;-) >>> >>> I played around with keepalive and >>> lmi-n391dte-values, however the >>> >>> type >>> >>> 0 I >>> >>> don't get rid of ..? >>> >>> thanks, keti >>> >>> >>> Blogs and organic groups at >> http://www.ccie.net <http://www.ccie.net/> >>> <http://www.ccie.net/> >>> >>> >> >> _______________________________________________________________________ >>> Subscription information may be found at: >>> http://www.groupstudy.com/list/CCIELab.html >>> >>> >>> Blogs and organic groups at http://www.ccie.net >> <http://www.ccie.net/> >>> <http://www.ccie.net/> >>> >>> >> >> _______________________________________________________________________ >>> Subscription information may be found at: >>> http://www.groupstudy.com/list/CCIELab.html >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> -- >>> Carlos G Mendioroz <tron_at_huapi.ba.ar >> <mailto:tron_at_huapi.ba.ar> <mailto:tron_at_huapi.ba.ar >> <mailto:tron_at_huapi.ba.ar>>> >>> LW7 EQI Argentina >>> >>> >>> >>> >>> -- >>> Narbik Kocharians >>> CCSI#30832, CCIE# 12410 (R&S, SP, Security) >>> www.MicronicsTraining.com <http://www.micronicstraining.com/> >> <http://www.MicronicsTraining.com >> <http://www.micronicstraining.com/>> >>> Sr. Technical Instructor >>> YES! We take Cisco Learning Credits! >>> Training And Remote Racks available >> >> -- >> Carlos G Mendioroz <tron_at_huapi.ba.ar <mailto:tron_at_huapi.ba.ar>> >> LW7 EQI Argentina >> >> >> Blogs and organic groups at http://www.ccie.net >> <http://www.ccie.net/> >> >> >> _______________________________________________________________________ >> Subscription information may be found at: >> http://www.groupstudy.com/list/CCIELab.html >> >> >> >> >> >> >> >> >> >> >> >> -- >> Narbik Kocharians >> CCSI#30832, CCIE# 12410 (R&S, SP, Security) >> www.MicronicsTraining.com <http://www.MicronicsTraining.com> >> Sr. Technical Instructor >> YES! We take Cisco Learning Credits! >> Training And Remote Racks available > > -- > Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina > > > Blogs and organic groups at http://www.ccie.net > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html Blogs and organic groups at http://www.ccie.netReceived on Wed Aug 25 2010 - 17:50:53 ART
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