From: Paglia, John (USPC.PCT.Hopewell) (JPaglia@xxxxxxxxxxxxx)
Date: Thu Jun 06 2002 - 17:46:58 GMT-3
Rarely should you rely on dynamics, esp. in frame relay configs. You're just
begging for future troubles. Heck, I even end my access lists with "deny
any" statements!!!!! Just use the map (unles specifically told not to), and
you'll be much happier.
Pags
> -----Original Message-----
> From: Brian Dennis [SMTP:brian@5g.net]
> Sent: Thursday, June 06, 2002 2:17 PM
> 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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