From: ccie2k4 (ccie2k4@gmail.com)
Date: Thu Aug 31 2006 - 19:42:08 ART
Hi Brian,
Thanks for help. I don't have the configs as I moved on to another lab
however could you comment on the structure of ospf database. if i see under
the asbr summary for Area 0 everything is ok but under the ASBR summary for
Area 13 it says Adv Router is not-reachable
what does that mean. Is it that the particular link state is not reachable
through area 13. Why are there 2 entries under the area 13 but only 1 under
area 0. thanks
Summary ASB Link States (Area 0)
> >
> > LS age: 1 (DoNotAge)
> > Options: (No TOS-capability, DC, Upward)
> > LS Type: Summary Links(AS Boundary Router)
> > Link State ID: 192.168.1.2 (AS Boundary Router address)
> > Advertising Router: 192.168.1.3
> > LS Seq Number: 80000001
> > Checksum: 0x5CC1
> > Length: 28
> > Network Mask: /0
> > TOS: 0 Metric: 1
> >
> >
> > Summary ASB Link States (Area 13)
> >
> > LS age: 954
> > Options: (No TOS-capability, DC, Upward)
> > LS Type: Summary Links(AS Boundary Router)
> > Link State ID: 192.168.1.2 (AS Boundary Router address)
> > Advertising Router: 192.168.1.1
> > LS Seq Number: 80000003
> > Checksum: 0x78A3
> > Length: 28
> > Network Mask: /0
> > TOS: 0 Metric: 3
> >
> > Adv Router is not-reachable
> > LS age: 898
> > Options: (No TOS-capability, DC, Upward)
> > LS Type: Summary Links(AS Boundary Router)
> > Link State ID: 192.168.1.2 (AS Boundary Router address)
> > Advertising Router: 192.168.1.3
> > LS Seq Number: 80000003
> > Checksum: 0x58C3
> > Length: 28
> > Network Mask: /0
> > TOS: 0 Metric: 1
> >
> > Adv Router is not-reachable
> > LS age: 863
> > Options: (No TOS-capability, DC, Upward)
> > LS Type: Summary Links(AS Boundary Router)
> > Link State ID: 192.168.1.2 (AS Boundary Router address)
> > Advertising Router: 192.168.1.100
> > LS Seq Number: 80000003
> > Checksum: 0xA6D1
> > Length: 28
> > Network Mask: /0
> > TOS: 0 Metric: 67
> >
On 8/31/06, Brian Dennis <bdennis@internetworkexpert.com> wrote:
>
> Could you post the configurations and routing tables?
>
> Thanks!
>
> Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
> bdennis@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987
> Direct: 775-745-6404 (Outside the US and Canada)
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> ccie2k4
> Sent: Thursday, August 31, 2006 2:34 PM
> To: ccielab@groupstudy.com
> Subject: Re: OSPF Database Explanation
>
> Hi Victor,
>
> No I am not running Frame Relay.This is all ethernet broadcast and though
> the doc does specify that it pertains to broadcast network type as well it
> also says that the routers in question did not have the route in their
> routing table. In my case I am seeing the route in the routing table and am
> also able to get to the advertising router.
>
> can you please explain the layout of the database. if you notice that
> under area 0 it doesn't give that message however under the LSA's for Area
> 13 it gives that message. Does that mean that the advertising router is not
> reachable via Area 13.
>
> thx
>
> On 8/31/06, Victor Cappuccio <cvictor@protokolgroup.com> wrote:
> >
> > Is this your case?
> >
> > http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080
> > 094051
> > .shtml
> >
> > HTH
> > Victor.-
> >
> >
> > -----Mensaje original-----
> > De: nobody@groupstudy.com [mailto:nobody@groupstudy.com] En nombre de
> > ccie2k4
> > Enviado el: Jueves, 31 de Agosto de 2006 01:14 p.m.
> > Para: ccielab@groupstudy.com
> > Asunto: Re: OSPF Database Explanation
> >
> > Hi Wayne,
> >
> > Yes that is confusing me as well. i see that it is saying that the
> > advertising router is not reachable however I am able to get to the
> > prefix as well as the advertising router. i am running 12.4 code.
> >
> > On 8/31/06, Wayne <ccie_lab@inetiq.com> wrote:
> > >
> > > Sorry, I missed the part about you being able to reach the box.
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> > > Of
> > > ccie2k4
> > > Sent: Thursday, August 31, 2006 1:10 AM
> > > To: Cisco certification
> > > Subject: OSPF Database Explanation
> > >
> > > Hi All,
> > >
> > > Could someone please help me in understanding what could be the
> > > reason that I am seeing "Adv Router is not-reachable" when I do a
> > > show ip ospf data asbr-summ. the part that is confusing me is that
> > > even though it says advertising router not reachable the prefix is
> > > in the routing table and also I can ping the advertising router. thx
> > >
> > > RTR-01#sh ip ospf data as
> > >
> > > OSPF Router with ID (192.168.1.1) (Process ID 100)
> > >
> > > Summary ASB Link States (Area 0)
> > >
> > > LS age: 1 (DoNotAge)
> > > Options: (No TOS-capability, DC, Upward) LS Type: Summary Links(AS
> > > Boundary Router) Link State ID: 192.168.1.2 (AS Boundary Router
> > > address) Advertising Router: 192.168.1.3 LS Seq Number: 80000001
> > > Checksum: 0x5CC1
> > > Length: 28
> > > Network Mask: /0
> > > TOS: 0 Metric: 1
> > >
> > >
> > > Summary ASB Link States (Area 13)
> > >
> > > LS age: 954
> > > Options: (No TOS-capability, DC, Upward) LS Type: Summary Links(AS
> > > Boundary Router) Link State ID: 192.168.1.2 (AS Boundary Router
> > > address) Advertising Router: 192.168.1.1 LS Seq Number: 80000003
> > > Checksum: 0x78A3
> > > Length: 28
> > > Network Mask: /0
> > > TOS: 0 Metric: 3
> > >
> > > Adv Router is not-reachable
> > > LS age: 898
> > > Options: (No TOS-capability, DC, Upward) LS Type: Summary Links(AS
> > > Boundary Router) Link State ID: 192.168.1.2 (AS Boundary Router
> > > address) Advertising Router: 192.168.1.3 LS Seq Number: 80000003
> > > Checksum: 0x58C3
> > > Length: 28
> > > Network Mask: /0
> > > TOS: 0 Metric: 1
> > >
> > > Adv Router is not-reachable
> > > LS age: 863
> > > Options: (No TOS-capability, DC, Upward) LS Type: Summary Links(AS
> > > Boundary Router) Link State ID: 192.168.1.2 (AS Boundary Router
> > > address) Advertising Router: 192.168.1.100 LS Seq Number: 80000003
> > > Checksum: 0xA6D1
> > > Length: 28
> > > Network Mask: /0
> > > TOS: 0 Metric: 67
> > >
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> >
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