My understanding is that frame relay inverse arp is enabled by default.
We have
a lab built up from 2500s in the main and one 2600, all running 12.1
We're finding that each time we restart the router we've to set
frame-relay inverse-arp ip 201
etc on some of the interfaces .. I forget whether
If this is a real network, not a lab toy, don't use inverse arp, just
because you can doesn't mean you should.
IMHO set up p-t-p subinterfaces and define your dlci
Dave
Danny Cox wrote:
My understanding is that frame relay inverse arp is enabled by default.
We have
a lab built up from
Is this problem on a router acting as a frame relay switch by any chance??
A switch shouldn't care about mapping network-layer addresses to DLCIs
since it works at the data-link layer. Just a thought..
Priscilla
Danny Cox wrote:
My understanding is that frame relay inverse arp
Hi,
I was a bit confused after reading the Ciscopress CCNP Support book and
Caslow's ccie book. Can frame-relay multipoint sub-interfaces support
inverse arp DLCI mappings?? Ciscopress Support book seem to say no (not
directly though) but Caslow's book says yes. Thanks in advance...
David
controllers serial 0 as DTE.
The DCE clocking is not configured, nor is there a Frame Relay Switch in the
URL config's. I can't quite understand how the dynamic mapping is taking
place in the URL and why I am not seeing Inverse-arp working?
Any responses appreciated.
Thanks Regards,
Ash
Message
- Inverse-arp problem [7:23321]
Hi there,
I am trying to set-up the following Frame Relay config's on my routers:
http://www.cisco.com/warp/public/125/14.html#14-A
I am having a problem in not being able to see anything when I issue the
following command:
Spicey#show frame-relay map
Please send me the config for the FR switch and both routers
-Original Message-
From: Ash Aslam [mailto:[EMAIL PROTECTED]]
Sent: 18 October 2001 04:57
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: Frame Relay Basics - Inverse-arp problem
Hi there,
I am trying to set-up
Dear Group,
I have been trying to duplicate the problem where if you enter a frame relay
map stament in a frame realy interface that is also using frame relay
inverse arp that inverse arp will be disabled for specific protocol for that
specific DLCI specified in the frame relay map statement.
I
Hi,
"Inverse arp" is automaticaly disable with frame relay mapping statement.
In point-to-point sub-interface you must define interface dlci what you will use.
Best Regard
thierry
Ronnie Royston [EMAIL PROTECTED] 15/01/01 03h55
Why wouldn't it? Inverse ARP is a dynamic mappi
This contradicts my experience at the lab. If they explicitly tell you to not use
inverse arp, you will be penalized. However, if they do not specify how a config
should be built, its not an illegal configuration.
My preference is always
1. Sub Interfaces
2. Physical Interface/Inverse Arp
3
14, 2001 6:48 PM
To: Cisco Group Study; Chuck Larrieu; CCIE_Lab Group Study
Subject: Frame Relay...Inverse-Arp..?
Hi All,
I was working through a number of frame relay lab and made =
some pretty cool observations. The big one being that I had Inverse-Arp =
working as well while using
Yes, you are correct on both counts.
1. Both Caslow's book and Cisco's documentation state the same - if a map
is used, inverse arp is disabled for that dlci for that protocol on that
interface.
2. If you set up a lab to prove this, you can't. I did the same, and got
the same results as you
PROTECTED]]On Behalf Of
Joseph Ezerski
Sent: Monday, January 15, 2001 9:59 AM
To: 'Nigel Taylor'; Cisco Group Study; Chuck Larrieu; CCIE_Lab Group
Study
Subject: RE: Frame Relay...Inverse-Arp..?
I have an interesting tidbit that I hope can add to this thread. I was
doing a frame relay lab and set
AM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: Re: Frame Relay...Inverse-Arp..?
Ok, now you all got me interested.
#1) From what I'm reading, you are saying that if you create a FR lab and
just place the DLCI map commands on the frame switch for the remote ends,
and
you have the LMI set
Steve
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Monday, January 15, 2001 12:57 PM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: Re: Frame Relay...Inverse-Arp..?
Ok, now you all got me interested.
#1) From what I'm reading, you are sayi
so you have to put "no keep" under the interface.
Steve
-Original Message-
From: Joseph Ezerski [mailto:[EMAIL PROTECTED]]
Sent: Monday, January 15, 2001 1:26 PM
To: '[EMAIL PROTECTED]'; [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: RE: Frame Relay...Inverse-Arp..?
I thi
Ronnie,
This is not what I'm reading when I reference Caslow's Bridges,
Routers, and Switches..pg. 131 it states that inverse-arp is disabled for
the protocol referenced in the frame relay map statement on the DLCI
referenced in the frame relay map statement. In my case I was using
Maybe there's an email address for Bruce on the back of that book? I dunno,
myself. I operate under the assumption that if I want frame inverse arp
off, I issue 'no frame inverse' on the interface.
I hadn't heard that inverse arp was automatically disabled for all DLCIs
once you entered one
-
From: "Nigel Taylor" [EMAIL PROTECTED]
To: "Cisco Group Study" [EMAIL PROTECTED]; "Chuck Larrieu"
[EMAIL PROTECTED]; "CCIE_Lab Group Study" [EMAIL PROTECTED]
Sent: Sunday, January 14, 2001 9:47 PM
Subject: Frame Relay...Inverse-Arp..?
Hi All,
Group Study; Chuck Larrieu; CCIE_Lab Group
Study
Subject: RE: Frame Relay...Inverse-Arp..?
Why wouldn't it? Inverse ARP is a dynamic mapping, 'frame map' command is a
static mapping.
If I remember correctly, You must disable inverse arp on the major interface
even if you have 'no frame inverse
Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Nigel Taylor
Sent: Sunday, January 14, 2001 8:48 PM
To: Cisco Group Study; Chuck Larrieu; CCIE_Lab Group Study
Subject: Frame Relay...Inverse-Arp..?
Hi All,
I was working through a number of frame relay lab
Stephen,
Yep, that's exactly that happened. Here's the important
config stuff...
Here's the layout..
I've got the typical hub and spoke topology frame cloud. I've got all 4
devices
using physical and using Inverse-Arp to dynamically activate the PVC's.
here's the
pertinent
For the frame relay configurations, I never followed the directions that
people gave on using frame-relay maps. I was always able to get the labs to
work fine with inverse-arp doing its thing under the usual scenarios (NBMA,
point-to-point, multipoint, IPX, IP, OSPF, EIGRP, etc.). I
Andrews
Subject: Re: Frame Relay...Inverse-Arp..?
Stephen,
Yep, that's exactly that happened. Here's the important
config stuff...
Here's the layout..
I've got the typical hub and spoke topology frame cloud. I've got all 4
devices
using physical and using Inverse-Arp
, 2001 11:34 PM
To: Nigel Taylor; CCIE_Lab Group Study; Cisco Group Study; Stephen
Masraum
Cc: Bryant Andrews
Subject: RE: Frame Relay...Inverse-Arp..?
For the frame relay configurations, I never followed the directions that
people gave on using frame-relay maps. I was always able to get
If you use inverse arp on the lab they ding you...
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Wayne S. Lewis
Sent: Monday, January 15, 2001 12:34 AM
To: Nigel Taylor; CCIE_Lab Group Study; Cisco Group Study; Stephen
Masraum
Cc: Bryant Andrews
fram map disables inverse arp for the specific protocol and dlci specified
in the fram map statement
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Nigel Taylor
Sent: Sunday, January 14, 2001 9:48 PM
To: Cisco Group Study; Chuck Larrieu; CCIE_Lab Group
Yes, you are asking for trouble - especially in point-to-multipoint
scenarios on sub interfaces. You also run the risk of the inverse-arp not
working after a reboot of one side of the link. Also,in the CCIE lab, it
will cost you big time points for reasons I cannot disclose (NDA).
Louie
Inverse ARP -- Layer 2 or Layer 3 and why?
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, etc., are at the subnetwork
dependent level. Subnetwork Dependent Convergence maps from
independent to dependent, such as ARP.
Therefore, Inverse ARP and regular ARP are layer 3 protocols. I'd
also argue they are edge signaling (i.e., control) protocols rather
than end-to-end protocols.
RARP
Is there a command to discover ip addresses learn from inverse arp.
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'show frame map' for frame relay inverse arp.
--- me [EMAIL PROTECTED] wrote:
Is there a command to discover ip addresses learn
from inverse arp.
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Hi group
does any one know HOW( i mean to know how not why)a FR interface on cisco router
learns destination layer three address in association with local DLCI if using
Inverse-arp on a certain DLCI .
is inverse-arp message included in lmi packet which is found between router and FR
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