From: Carlos G Mendioroz (tron@huapi.ba.ar)
Date: Thu Sep 26 2002 - 15:23:43 GMT-3
Some time back I posted a note on this. Search should be able to find
it.
Basically, I found that "no arp frame-relay" was doing nothing that I
could
determine, and "no frame-relay inverse-arp" would shut the enquiries but
not the answers.
To shut down inverse arp, "no frame-relay inverse-arp" on BOTH sides
will
do, but nothing else (and nothing more)...
because even receiving the enquiry would tell the answering side the
enquirer (does that word exist ???) IP!
This, as usual, might be IOS version dependant.
HTH,
-Carlos
Brian McGahan wrote:
>
> Antoine,
>
> I cant seem to reproduce your problem, and I cant find
> anything listed in the bug toolkit. Its working the way its supposed
> to on 12.1(12) here. What are you debugging that shows the inarp
> request/reply? Shut the interface down, encap hdlc, encap fram, then
> bring it back up.
>
> HTH
>
> Brian McGahan, CCIE #8593
> Director of Design and Implementation
> brian@cyscoexpert.com
>
> CyscoExpert Corporation
> Internetwork Consulting & Training
> http://www.cyscoexpert.com
> Voice: 847.674.3392
> Fax: 847.674.2625
>
> -----Original Message-----
> From: Deleporte Antoine [mailto:DELEPORTE@dynetcom.fr]
> Sent: Thursday, September 26, 2002 11:33 AM
> To: 'Brian McGahan'; ccielab@groupstudy.com
> Subject: RE: FrameRelay InARP
>
> Brian,
> as you can see, I used both commands on R2 (physical interfaces), but R2
> still replies to R1 InARP requests...
> Have you ever hear something wrong or strange with this command ? It
> doesn't work...
> Antoine
> -----Message d'origine-----
> De : Brian McGahan [mailto:brian@cyscoexpert.com]
> Envoyi : jeudi 26 septembre 2002 18:11
> @ : 'Deleporte Antoine'; ccielab@groupstudy.com
> Objet : RE: FrameRelay InARP
>
> Antoine,
> There are actually two steps in turning off frame-relay
> inverse-arp.
> No frame-relay inverse-arp <--- do not request inarp of other end of
> cloud
> No arp frame-relay <--- do not respond to any inarp request
> Remember to turn it off on both your main interface and multipoint
> sub-interfaces.
>
> HTH
> Brian McGahan, CCIE #8593
> Director of Design and Implementation
> brian@cyscoexpert.com
> CyscoExpert Corporation
> Internetwork Consulting & Training
> http://www.cyscoexpert.com
> Voice: 847.674.3392
> Fax: 847.674.2625
>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of
> > Deleporte Antoine
> > Sent: Thursday, September 26, 2002 7:08 AM
> > To: 'ccielab@groupstudy.com'
> > Subject: FrameRelay InARP
> >
> > Hi all,
> >
> > just a question about FrameRelay InARP :
> >
> >
> > R1--------(FrameRelay)--------R2
> >
> > R1 : (on R1, inARP is enabled by default...)
> > interface Serial1
> > ip address 144.21.1.17 255.255.255.248
> > no ip directed-broadcast
> > encapsulation frame-relay
> > no logging event subif-link-status
> > no logging event dlci-status-change
> > !
> >
> > R2 : (InARP is disabled)
> > interface Serial0
> > ip address 144.21.1.19 255.255.255.248
> > encapsulation frame-relay
> > no fair-queue
> > no arp frame-relay
> > no frame-relay inverse-arp
> > !
> >
> > So, R2 doesn't send any InARP request, as configured.
> > But, R1 send InARP request, and R2 reply to this request, mapping R1
> ip
> > address on a dlci...
> >
> > Could someone explain me why does R2 reply to inARP request ?!
> > How can I force R2 not to map any dlci, keeping default inARP settings
>
> on
> > R1
> > ???
> >
> > Here are debugs :
> >
> > r2#sh frame-relay map
> >
> > r2#
> > r2#
> > *Mar 1 01:39:32: Serial0(i): dlci 35(0x831), pkt encaps 0x0300 0x8000
>
> > 0x0000 0x806 (ARP), datagramsize 30
> > *Mar 1 01:39:32: Serial0: frame relay INARP received
> > *Mar 1 01:39:32: FR: Sending INARP Reply on interface Serial0 dlci 35
>
> for
> > link 7(IP)
> > r2#
> > r2#
> > r2#
> > r2#sh frame-relay map
> > Serial0 (up): ip 138.21.1.17 dlci 35(0x23,0x830), dynamic,
> > broadcast,, status defined, active
> > r2#
> >
> >
> > IOS versions are 12.1(2), and routers are rebooted...
> > Can someone help ?
> >
> > Antoine
-- Carlos G Mendioroz <tron@huapi.ba.ar> LW7 EQI Argentina
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