From: nenad pudar (nenad.pudar@gmail.com)
Date: Sat Jul 16 2005 - 15:06:45 GMT-3
Sorry
here is the ospf config (no neighbor statemEnt)
hUB
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
network 172.16.32.2 0.0.0.0 area 0
network 172.16.32.65 0.0.0.0 area 10
network 172.16.32.129 0.0.0.0 area 0
SPOKE
router ospf 1
router-id 4.4.4.4
log-adjacency-changes
network 172.16.32.4 0.0.0.0 area 0
network 172.16.34.1 0.0.0.0 area 44
network 172.16.34.65 0.0.0.0 area 44
On 7/16/05, nenad pudar <nenad.pudar@gmail.com> wrote:
> The network is hube-and-spoke
>
> 2spoke + hub
>
> If I understand well you said if I force hub to be DR I do not need
> static neighbor
>
> Here is the config
>
> Hub
> interface Serial0/0
> description to r7 2/1
> no ip address
> encapsulation frame-relay
> no arp frame-relay
> no frame-relay inverse-arp
> !
> interface Serial0/0.1 multipoint
> ip address 172.16.32.2 255.255.255.192
> no arp frame-relay
> frame-relay map ip 172.16.32.4 204 broadcast
> frame-relay map ip 172.16.32.5 205 broadcast
> no frame-relay inverse-arp
>
> interface Serial0/0.2 point-to-point
> ip address 172.16.32.129 255.255.255.192
> frame-relay interface-dlci 201
>
> RTB-R2#sh ip ospf neighbor
>
> Neighbor ID Pri State Dead Time Address Interface
> 1.1.1.1 1 FULL/ - 00:00:39 172.16.32.130 Serial0/0.2
> 5.5.5.5 0 FULL/DROTHER 00:01:51 172.16.32.5 Serial0/0.1
> 4.4.4.4 0 FULL/DROTHER 00:01:56 172.16.32.4 Serial0/0.1
>
>
> spoke
> interface Serial0/0
> description to r7 2/2
> ip address 172.16.32.4 255.255.255.192
> encapsulation frame-relay
> ip ospf priority 0
> no arp frame-relay
> frame-relay map ip 172.16.32.2 401 broadcast
> frame-relay map ip 172.16.32.5 401 broadcast
> no frame-relay inverse-arp
>
> RTD-R4#sh ip ospf neighbor
>
> Neighbor ID Pri State Dead Time Address Interface
> 2.2.2.2 1 FULL/DR 00:01:47 172.16.32.2 Serial0/0
>
>
>
> Spoke
>
>
>
> On 7/16/05, Jian Gu <guxiaojian@gmail.com> wrote:
> > It might work if you have a simple two router network, but if you have
> > a hub-spoke topology with more than one spoke, you will find that LSA
> > database in those routers are not consistent.
> >
> > In NBMA mode a DR needs to be elected, but hub can not forward
> > multicast packets from one spoke to another spoke, hence DR can not be
> > elected automatically, the only option is to designate hub as DR by
> > using neighbor command.
> >
> > On 7/16/05, nenad pudar <nenad.pudar@gmail.com> wrote:
> > > Hi
> > > This was most probably before ,sorry ,but I need to clear this.
> > > In K. Solie's book and others it stays that the static ospf neighbor
> > > are needed for neighbor connected using frame relay physical or
> > > multipoint subinterfaces (Network Type NON_BROADCAST)
> > >
> > > However in my case it works fine without static neighbor .As a matter
> > > of fact I wander why we need static neighbor if you have fr map
> > > broadcast statement .
> > >
> > > How should I configure this on LAB exam ?
> > > Am I missing something here ?
> > >
> > > thanks
> > > nenad
> > >
> > > _______________________________________________________________________
> > > Subscription information may be found at:
> > > http://www.groupstudy.com/list/CCIELab.html
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