RE: Frame-relay Inverse-arp

From: Erhan Kurt (kurt@xxxxxxxxxxxxxxx)
Date: Fri Jun 07 2002 - 10:34:35 GMT-3


   
Well, in exam, you'll also really need to :)

Erhan

-----Original Message-----
From: Brian Dennis [mailto:brian@5g.net]
Sent: 06 Haziran 2002 Per:embe 21:17
To: 'gary braver'; ccielab@groupstudy.com
Subject: RE: Frame-relay Inverse-arp

In the real CCIE lab why would you want to rely on something dynamic and
hope it works when you can just hard code it and be sure it's going to work?

Brian Dennis, CCIE #2210 (R&S/ISP Dial)
bdennis@5g.net
5G Networks, Inc.

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of gary
braver
Sent: Thursday, June 06, 2002 10:29 AM
To: 'Erhan Kurt'; 'Joe Jia'; ccielab@groupstudy.com
Subject: RE: Frame-relay Inverse-arp

Know how to disable inarp and put in map statments. My question is why
should we disable inarp and not rely on dynamic mappings?

thanks

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of Erhan
Kurt
Sent: Tuesday, June 04, 2002 4:44 AM
To: Joe Jia; ccielab@groupstudy.com
Subject: RE: Frame-relay Inverse-arp

Use "no fram inv" every FR interfaces except point-to-point. i.e. Do not
rely on dynamic mappings even for IPX.

Never Give Up,
Erhan

-----Original Message-----
From: Joe Jia [mailto:ellenjjl@rogers.com]
Sent: 09 May}s 2002 Per~embe 01:55
To: ccielab@groupstudy.com
Subject: Frame-relay Inverse-arp

Hi,

  I have been confused by frame-relay inverse-arp and arp frame-relay. For
example, suppose that Router R1, R2, R3, R4 fully messed to configure IP.
Only R1 can use subinterfaces, say s0.1 point-to-point (to R4), s0.2
multipoint (to R2 and R3). The requirement is that on R4 can not use
subinterface and map. I also don't want to see R2,R3's IP address on R4, and
on R2,R3 can't see R4's IP address. (Show Frame-relay map"

  With the following configuration, I reloaded the Routers, but still can't
solve the problem.

  (1)on R4 cannot see R2, R3's IP address? Even though on R2, R3, I
configured "no frame-relay inverse" and "no arp frame-relay".

  (2)On R4, whether or not put "no arp frame-relay", on R2,R3 can still see
R4's IP address.

  R1:

  interface Serial0

   no ip address

   no ip directed-broadcast

   encapsulation frame-relay

   no ip mroute-cache

   no arp frame-relay

   no fair-queue

   clockrate 64000

   no frame-relay inverse-arp

  !

  interface Serial0.1 point-to-point

   ip address 137.20.100.2 255.255.255.0

   no ip directed-broadcast

   frame-relay interface-dlci 131

  !

  interface Serial0.2 multipoint

   ip address 137.20.101.1 255.255.255.0

   no ip directed-broadcast

   frame-relay map ip 137.20.101.3 132 broadcast

   frame-relay map ip 137.20.101.5 130 broadcast

  R4:

  interface Serial0

   ip address 137.20.100.1 255.255.255.0

   no ip directed-broadcast

   encapsulation frame-relay

   no ip mroute-cache

   no arp frame-relay

   no fair-queue

   clockrate 64000

   frame-relay interface-dlci 123

  R2:

  interface Serial0

   ip address 137.20.101.3 255.255.255.0

   no ip directed-broadcast

   encapsulation frame-relay

   no ip mroute-cache

   logging event subif-link-status

   logging event dlci-status-change

   no fair-queue

   clockrate 64000

   no arp frame-relay

   frame-relay map ip 137.20.101.1 231 broadcast

   no frame-relay inverse-arp

  R3:

  interface Serial0

   ip address 137.20.101.5 255.255.255.0

   no ip directed-broadcast

   encapsulation frame-relay

   no ip mroute-cache

   logging event subif-link-status

   logging event dlci-status-change

   no fair-queue

   clockrate 64000

   no arp frame-relay

   frame-relay map ip 137.20.101.1 230 broadcast

   no frame-relay inverse-arp

  Show Frame-relay map:

  R1:

  Serial0.2 (up): ip 137.20.101.3 dlci 132(0x84,0x2040), static,-`R2

                broadcast,

                CISCO, status defined, active

  Serial0.2 (up): ip 137.20.101.5 dlci 130(0x82,0x2020), static, `R3

                broadcast,

                CISCO, status defined, active

  Serial0.1 (up): point-to-point dlci, dlci 131(0x83,0x2030), broadcast`R4

            status defined, active

  R4:

  Rack01R2#sh fram map

  Serial0 (up): ip 137.20.100.2 dlci 123(0x7B,0x1CB0), dynamic,`R1

                broadcast,, status defined, active

  Serial0 (up): ip 137.20.101.3 dlci 400(0x190,0x6400), dynamic, --`R2

                broadcast,, status defined, active

  Serial0 (up): ip 137.20.101.5 dlci 200(0xC8,0x3080), dynamic,-`R3

                broadcast,, status defined, active

  R2:

  Serial0 (up): ip 137.20.100.1 dlci 400(0x190,0x6400), dynamic,`R4

                broadcast,, status defined, active

  Serial0 (up): ip 137.20.101.1 dlci 231(0xE7,0x3870), static, `R1

                broadcast,

                CISCO, status defined, active

  R3:

  Serial0 (up): ip 137.20.100.1 dlci 200(0xC8,0x3080), dynamic, `R4

                broadcast,, status defined, active

  Serial0 (up): ip 137.20.101.1 dlci 230(0xE6,0x3860), static,-`R1

                broadcast,

                CISCO, status defined, active



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