RE: OSPF Network Types Error

From: mike jones (ccie1q2008@hotmail.com)
Date: Fri Jul 18 2008 - 20:12:21 ART


Hammad,
      Fahad is right! If R5 is your Hub then you do not need the "ip ospf
priority 0", because the hub should be the DR. I see the you have a full mesh
frame-relay mapping, but if this was not R5 would be the only R5 with a
frame-reiay mapping to all the routers. To make your below configuration work
you have to solutions:

1. Use the "neighbor" command on R5 (since it's the hub) for R4 and R1.
2. Use the "ip ospf network" command under all the router's S0/0 interface,
and add the "broadcast" command on all the routers "frame-relay map"
statments.

Thanks!

> Date: Fri, 18 Jul 2008 13:53:23 -0700> From: fahad.khan@gmail.com> To:
zealist@gmail.com> Subject: Re: OSPF Network Types Error> CC:
ccielab@groupstudy.com> > Dear Hammad,> > R5 is hub right!!! why have u put
"ip ospf priority 0 " on R5? assuming> that your network type is Non-broadcast
over all. you better need to make> your R5 as DR. furthermore, neighbour
command is used to unicast ospf> packets.> > thanks and regards,> > On
7/18/08, Zealist Hamamd <zealist@gmail.com> wrote:> >> > ---------- Forwarded
message ----------> > From: Zealist Hamamd <zealist@gmail.com>> > Date: Sat,
Jul 19, 2008 at 12:54 AM> > Subject: Re: OSPF Network Types Error> > To: Marc
La Porte <marc.a.laporte@gmail.com>> >> >> > Hies Marc,> >> > As u said that
routers will be ping coz of FR config then routes will also> > flow ??? if yes
then wats the need of Neighbor command> > R$ and R5 configs are> >> > hostname
R4> > !> > interface Loopback0> > ip address 150.1.4.4 255.255.255.0> > no ip
directed-broadcast> > !> > interface Serial0/0> > ip address 155.1.0.4
255.255.255.0> > no ip directed-broadcast> > encapsulation frame-relay> > ip
ospf priority 0> > frame-relay map ip 155.1.0.1 405> > frame-relay map ip
155.1.0.5 405> > no frame-relay inverse-arp> > !> > interface FastEthernet1/0>
> ip address 155.1.146.4 255.255.255.0> > no ip directed-broadcast> > duplex
auto> > speed auto> > !> > router ospf 1> > router-id 150.1.4.4> > network
150.1.4.4 0.0.0.0 area 1> > network 155.1.0.4 0.0.0.0 area 0> > network
155.1.146.4 0.0.0.0 area 1> > !> > !> >> >> > hostname R1> > !> > interface
Loopback0> > ip address 150.1.1.1 255.255.255.0> > no ip directed-broadcast> >
!> > interface Serial0/0> > ip address 155.1.0.1 255.255.255.0> > no ip
directed-broadcast> > encapsulation frame-relay> > ip ospf priority 0> >
frame-relay map ip 155.1.0.4 105> > frame-relay map ip 155.1.0.5 105> > no
frame-relay inverse-arp> > !> > !> > router ospf 1> > router-id 150.1.1.1> >
network 150.1.0.1 0.0.0.0 area 0> > network 150.1.1.1 0.0.0.0 area 1> >
network 155.1.146.1 0.0.0.0 area 1> > !> >> > regards> >> >> >> > On Sat, Jul
19, 2008 at 12:45 AM, Marc La Porte <marc.a.laporte@gmail.com>> > wrote:> >> >
> Hi,> > >> > > Could you please provide the configuration of R1 and R4 as
well?> > > In answer to your other question: ping will work because of FR
config> > >> > > Thanks> > > Marc> > >> > >> > > On Fri, Jul 18, 2008 at 9:35
PM, Zealist Hamamd <zealist@gmail.com>> > > wrote:> > >> > >> Hies all,> > >>>
> >> I have 2 questions regarding OSPF Networks(NBMA etc)> > >>> > >> 1)> > >>
I was working on IE technology labs for OSPF . While working i am> > getting>
> >> error despite i m using same config as in IE OSPF lab under heading> > >>
"Common> > >> Multi Area Config with two ABRs". Also neighbor relations do not
form .> > >> Can> > >> someone identify me what i m doing wrong ??????> > >>
MY config is this> > >>> > >> interface Loopback0> > >> ip address 150.1.5.5
255.255.255.0> > >> no ip directed-broadcast> > >> no sh> > >> !> > >>
interface Serial0/0> > >> ip address 155.1.0.5 255.255.255.0> > >> no ip
directed-broadcast> > >> encapsulation frame-relay> > >> ip ospf priority 0> >
>> no sh> > >> frame-relay map ip 155.1.0.1 501> > >> frame-relay map ip
155.1.0.4 504> > >> no frame-relay inverse-arp> > >> !> > >> router ospf 1> >
>> router-id 150.1.5.5> > >> network 150.1.5.5 0.0.0.0 area 0> > >> network
155.1.0.5 0.0.0.0 area 0> > >> neighbor 155.1.0.1> > >> neighbor 155.1.0.4> >
>> !> > >>> > >> 00:03:40: %OSPF-5-ADJCHG: Process 1, Nbr 0.0.0.0 on Serial0/0
from> > >> ATTEMPT> > >> to DOWN, Neighbor Down: Dead timer expire%> > >>
R7(config)#> > >> R7(config)#> > >> 00:03:42: %OSPF-5-ADJCHG: Process 1, Nbr
0.0.0.0 on Serial0/0 from> > >> ATTEMPT> > >> to DOWN, Neighbor Down: Dead
timer expired> > >>> > >>> > >> 2)> > >> While doing NBMA is it must to give
neighbor command as when i config> > >> sample> > >> lab i didnt give neigbor
command but the routers can still ping> > >> each other.?????> > >>> > >> -->
> >> zealist@gmail.com> > >>> > >>> > >>



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