RE: Frame Relay : expecting static .. why dynamic.

From: <Keegan.Holley_at_sungard.com>
Date: Tue, 14 Jul 2009 11:37:35 -0400

The routers that are mapped dynamically are not part of the lab I am doing
currently so inverse-arp is still enabled. However, they should not be
dynamically mapped since I have disabled inverse-arp on the router with
the dynamic mapping correct? Or does inverse-arp send gratuitous ARP?

RE: Frame Relay : expecting static .. why dynamic.

Shaughn Smith
to:
'Keegan.Holley_at_sungard.com', 'Taufik Kurniawan'
07/14/09 11:12 AM

Cc:
'Cisco certification', "'nobody_at_groupstudy.com'"

In-arp stops the router sending ARP requests, not receiving them. In your
topology disable in-arp across all your routers, clear the mappings then
have another look

CCIE # 23962 (SP)

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
Keegan.Holley_at_sungard.com
Sent: Tuesday, July 14, 2009 5:08 PM
To: Taufik Kurniawan
Cc: Cisco certification; nobody_at_groupstudy.com
Subject: Re: Frame Relay : expecting static .. why dynamic.

I think I misread your question. I believe the frame-relay interface dlci
command uses inverse arp anyway to the dlci to an actual IP address. Try
using frame relay map ip even on point-to-point interfaces. My problem is
that when there is another DLCI on my physical interface it still uses
in-arp even though I have disabled it.

Frame Relay : expecting static .. why dynamic.

Taufik Kurniawan
to:
Cisco certification
07/14/09 10:47 AM

Sent by:
nobody_at_groupstudy.com
Please respond to Taufik Kurniawan

Hi All,

FR newbie questions :

Playing around with FR.

R1 :

int s0/0.1020 mul
ip add 10.0.0.1 255.255.255.252
frame inter-dlci 102

R2 :

int s0/0
ip add 10.0.0.2 255.255.255.252
encap frame
frame inter-dlci 201
no frame inv

r1#sh frame map
Serial0/0.1020 (up): ip 10.0.0.2 dlci 102(0x66,0x1860), dynamic,
              broadcast,
              CISCO, status defined, active

r2#sh frame map
Serial0/0 (up): ip 10.0.0.1 dlci 201(0xC9,0x3090), dynamic,
              broadcast,
              CISCO, status defined, active

why did i get dynamic in R2 ?

thanks for enlightment ...

Blogs and organic groups at http://www.ccie.net
Received on Tue Jul 14 2009 - 11:37:35 ART

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