I think you're still confused. Both physical frame interface and multipoint sub-interface are by default OSPF Non_Broadcast type. This means for OSPF to function you'd need to configure neighbor command in either scenario.
With the config you showed on RTA (the HUB router) you wouldn't even be able to ping both spokes as there are no maps defined (aside from missing netmask), and if relying only on inverse-arp, it would map only one spoke and no more. The rule is that inverse-arp will map only one Layer3 to the same Layer2, i.e one IP to DLCI X, one IPX to DLCI X, one IP to DLCI Y, etc. You're showing routes in the spokes, but we really don't know all of the configs when these routes show up in the routing table. What's the configs, output of "sh frame-relay pvc", "sh frame-relay map" ? ""Cisco Nuts"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > OK, I have finally found out this and concluded that: > > Neighbor commands are ONLY required in an OSPF point-to-multipoint > Non-Broadcast mode in a FR hub-and-spoke topology. > > Not required in a NBMA mode or any other mode....for that matter. > > > > >From: "Cisco Nuts" >Reply-To: "Cisco Nuts" >To: [EMAIL PROTECTED] > >Subject: More Confused!!! Re: Neighbor commands...Yes or No?? [7:33547] > >Date: Tue, 29 Jan 2002 01:38:45 -0500 > >Hello!! > >I am even more > confused now! :-( > >Just finished configuring 3 routers in a FR > hub-and-spoke topology with >OSPF in the default non-broadcast mode with > NO neighbor commands on the >hub router and FR map commands on both the > spokes to get to one another. >It works!! I mean without the neighbor > commands on the hub router, the >spoke routers are learning about the > networks on the other spoke, that >too in a different area. Why?? > > >Thanks! > >Here is some output: BTW: RTA is the hub and RTB and RTC the > spokes. FR >configed. on physical interfaces: > >RTB routing table: > >O > IA 192.168.10.192/27 [110/70] via 192.168.10.243, 00:01:20, Serial0 >O IA > 192.168.10.128/26 [110/74] via 192.168.10.243, 00:01:20, Serial0 > >RTA > config: > >RTA#sh ru int s0 >Building configuration... > >Current > configuration : 214 bytes >! >interface Serial0 > bandwidth 1544 > ip > address 192.168.10.241 255.255 > encapsulation frame-relay > ip ospf > priority 10 > logging event subif-link-status > logging event > dlci-status-change > no fair-queue >end > >RTC routing table: > >O IA > 192.168.10.64/26 [110/74] via 192.168.10.241, 00:17:50, Serial0 >O IA > 192.168.10.0/26 [110/74] via 192.168.10.242, 00:17:50, Serial0 > > >From: > "Henry Dziewa" >To: "Cisco Nuts" >Subject: Re: Neighbor >commands...Yes > or No?? [7:33486] >Date: Mon, 28 Jan 2002 20:11:07 -0500 > > >Well, it's > your loss....:) > >Hub and spoke, in order for the spoke to >talk to > another spoke you >need to map the remote spoke's IP to the same >DLCI > used for >mapping to HUB router on both spokes. >The HUB router >already > has the mapping to both so >it knows where everyone is. > >By >default, > physical frame interfaces are ospf non-broadcast, this means > >that > you'd need to configure neighbor statement, preferably >on the HUB > >router. > > >----- Original Message ----- >From: "Cisco Nuts" >To: > >Sent: >Monday, January 28, 2002 3:42 PM >Subject: Re: Neighbor > commands...Yes or >No?? [7:33486] > > > > And that's exactly what I am > asking my friend. > > >First, it's the layer 2 issue..that of fr map > statements to get from one > > > spoke to another via the hub....aka Mr. > Caslow. > > > > And there is >the ospf issue of either issuing the > neighbor commands or not > > in the >default non-broadcast mode when > using physical fr intfs. > > > > Is it >one of both? And that is the > confusing issue for me. > > > > :-) Can you >help? > > > > > > >From: > "Henry D." > > >Reply-To: "Henry D." > > >To: >[EMAIL PROTECTED] > > > >Subject: Re: Neighbor commands...Yes or No?? >[7:33486] > > >Date: Mon, > 28 Jan 2002 14:38:06 -0500 > > > > > >There are >2 different issues. > > > > > > >1. Layer 2 to Layer 3 mapping. > > >2. >Routing > > > > > >You > need to separate these 2 in order to understand >how it all works. > > > >If I gave you all the answers then it wouldn't be >fair to you as you > need > > >to grasp it for yourself, especially if >planning to gor for > CCIE. > > > > > >""Cisco Nuts"" wrote in message > > > > >[EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > Hello, > > > > > >Would someone clarify this for me as I am getting very confused :-( > > > > > > In a Frame-Relay hub-and-spoke config. using physical interfaces > and > > > > > frame-relay map statements at the spokes and using OSPF, do > we need >to > > > > configure neighbor commands? Yes or No? > > > > From > what I >understand, OSPF works in a Non-Broadcast mode by default > > > >and > > > > > neighbor commands are only needed if not a full-mesh. In > this case, > >will > > >the > > > > frame-relay map commands suffice to > get from one >spoke to another thru > > >the > > > > hub router? > > > > > Thank you. > > > > > > > > > > > > > > >_________________________________________________________________ > > > > > >MSN Photos is the easiest way to share and print your photos: > > > > > >http://photos.msn.com/support/worldwide.aspx > > > > > > > > > > > > > > > >archives, and subscription info: > > > > >http://www.groupstudy.com/list/cisco.html > > >Report misconduct and > >Nondisclosure violations to [EMAIL PROTECTED] > > > > > > > > > > > >_________________________________________________________________ > > > >Join the world's largest e-mail service with MSN Hotmail. > > > >http://www.hotmail.com > > > > > > > >------------------------------------------------------------------------ > > >Join the worlds largest e-mail service with MSN Hotmail. Click Here > > misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > ------------------------------------------------------------------------ > > Join the worlds largest e-mail service with MSN Hotmail. Click Here Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=33560&t=33560 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
