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. Maps.
However, one must always be keen on who Inverse arp works particularily when a few
maps are present. Caslow does a good job of providing some guildelines for this stuff.
Pete
*********** REPLY SEPARATOR ***********
On 1/15/2001 at 1:00 AM Kevin Mahoney wrote:
>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
>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 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 don't want to be
>a bad influence on others, but I prefer not using the maps. Please
>enlighten me if you think I'm headed for trouble.
>
> Thanks,
>
> Wayne
>
>
>-----Original Message-----
>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
>Nigel Taylor
>Sent: Sunday, January 14, 2001 7:10 PM
>To: CCIE_Lab Group Study; Cisco Group Study; Stephen Masraum
>Cc: Bryant 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 to dynamically activate the PVC's.
>here's the
>pertinent configs..... I ran through this a couple more times with the same
>result...in some
>instances it took a while but Inverse-Arp eventually worked.
>
>HUB router...running 12.1.4 code..
>
>interface Serial1
> ip address 172.16.10.1 255.255.255.0
> encapsulation frame-relay IETF
>
>r2_01#sh frame map
>Serial1 (up): ip 172.16.10.2 dlci 201(0xC9,0x3090), dynamic,
> broadcast,
> IETF, status defined, active
>Serial1 (up): ip 172.16.10.3 dlci 301(0x12D,0x48D0), dynamic,
> broadcast,
> IETF, status defined, active
>Serial1 (up): ip 172.16.10.4 dlci 401(0x191,0x6410), dynamic,
> broadcast,
> IETF, status defined, active
>
>
>Spoke 1.. running 11.3(11a)T1
>
>interface Serial1
> ip address 172.16.10.2 255.255.255.0
> encapsulation frame-relay IETF
> frame-relay map ip 172.16.10.4 102
>
>r4_02c#sh fram map
>Serial1 (up): ip 172.16.10.1 dlci 102(0x66,0x1860), dynamic,
> broadcast,
> IETF, status defined, active
>Serial1 (up): ip 172.16.10.4 dlci 102(0x66,0x1860), static,
> IETF, status defined, active
>
>
>Spoke 2.....running 11.3(11a)T1
>
>interface Serial0
> ip address 172.16.10.4 255.255.255.0
> encapsulation frame-relay
> frame-relay map ip 172.16.10.2 104
> frame-relay map ip 172.16.10.3 104
>!
>r1_fs#sh fram map
>Serial0 (up): ip 172.16.10.1 dlci 104(0x68,0x1880), dynamic,
> broadcast,, status defined, active
>Serial0 (up): ip 172.16.10.2 dlci 104(0x68,0x1880), static,
> CISCO, status defined, active
>Serial0 (up): ip 172.16.10.3 dlci 104(0x68,0x1880), static,
> CISCO, status defined, active
>
>Anyone got any IOS bug reports on this one...?
>
>Nigel.
>
>
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