From: Desmond (cciestudy@sympatico.ca)
Date: Sun Dec 22 2002 - 10:39:14 GMT-3
Thanks all you guys !
I tested with my Lab. I think the right answer is "area <area-id>
default-cost <cost>" for Stub and Totally Stub areas.
Those workbooks and scenarios solutions are driving me nuts.
The one from Hellocomputer is neither stub nor totall stub.
Multicast routing table will take R1 as the shortest path.
R1 R2
| |
---------------
|
Suggested solution 1 - ip ospf cost on R1 with lower cost
Suggested solution 2 - change to lower admin distance for the route gto
destination . (doesn't make any sense)
----- Original Message -----
From: "Brian Dennis" <brian@5g.net>
To: "'Desmond'" <cciestudy@sympatico.ca>; <ccielab@groupstudy.com>
Sent: Sunday, December 22, 2002 4:10 AM
Subject: RE: OSPF preferable router or path
> If you want to prefer R2 over R1 but not make any changes to R3, use the
> "area <area-id> default-cost <cost>" command.
>
> Brian Dennis, CCIE #2210 (R&S/ISP Dial/Security)
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Desmond
> Sent: Saturday, December 21, 2002 7:41 PM
> To: Jennifer Bellucci; ccielab@groupstudy.com
> Subject: Re: OSPF preferable router or path
>
> Thank Jennifer !
>
> Your solution will definitely work, but I have to configure the R3.
> I found some similar scenarios from Routopia and Hellocomputer workbook.
> Actually, the R3 doesn't exist.
>
> The questions are :
>
> Scenario 1 - make default route Injected by R1 is more preferable than
> R2 .
> Suggested solution - ip ospf cost on R1
> Scenario 2 - make R1 is a perferable path for Multicast traffic.
> Suggested solution 1 - ip ospf cost on R1
> Suggested solution 2 - change to lower admin distance for the
> route
> to destination . (doesn't make any sense)
>
> I guess I have to configure either R1 or R2, right ?
> Is there anything I can do on these 2 routers
>
> R1 R2
> | |
> --------------
> |
>
>
>
>
> ----- Original Message -----
> From: "Jennifer Bellucci" <Jennifer_bellucci@hotmail.com>
> To: "Desmond" <cciestudy@sympatico.ca>; <ccielab@groupstudy.com>
> Sent: Saturday, December 21, 2002 8:59 PM
> Subject: Re: OSPF preferable router or path
>
>
> > Try this, in router-config mode use the "distance (ad) x.x.x.x (mask)"
> > command. Enter the ip address of the router originating the network in
> > question. You can lower it or make it higher depending on what you
> want to
> > do.
> >
> > Here's an example:
> >
> > To change route's coming in from neighbour 172.100.200.1 to ad of 201
> >
> > !
> > router ospf 1
> > distance 201 172.100.200.1 0.0.0.0
> > end
> > !
> >
> > I sometimes have to modify the AD of OSPF from its default to get it
> to
> > work. You might also have to enter a network from the neighbour to
> make it
> > work...like..."distance 201 10.10.10.0 0.0.0.255" - (net 10.10.10.0
> coming
> > from the neighbour in question)
> >
> > You can always try some funky route-maps if you like or do filtering.
> >
> > You can also use the above method for EIGRP ( took me ages to finally
> learn
> > this work-around...slow learner)
> >
> > Let me know if I helped or confused you even more.
> >
> > Jbell
> > ----- Original Message -----
> > From: "Desmond" <cciestudy@sympatico.ca>
> > To: <ccielab@groupstudy.com>
> > Sent: Sunday, December 22, 2002 12:30 AM
> > Subject: OSPF preferable router or path
> >
> >
> > > I have following scenario. R1, R2 and R3 are on Ethernet and in
> an
> OSPF
> > > Totally Stub Area. Both R1 and R2 area ABRs and send default router
> to
> R3.
> > >
> > >
> > > R1 R2
> > > | |
> > > | |
> > > -----------------
> > > |
> > > R3
> > >
> > >
> > > The question is how I can make R2 is a preferable router or exit
> point.
> > > Here is the solution from some Lab workbooks and scenarios.
> > >
> > > R1
> > > int E0
> > > ip ospf cost 20
> > >
> > > R2
> > > int E0
> > > ip ospf cost 5
> > >
> > > I tested with my home lab. It doesn't work. I think the "ip ospf
> cost"
> is
> > > local significant.
> > >
> > > Can someone provide me answer ?
> > >
> > > Thanks in advance !
> > >
> > >
> > > Des
> > > .
> > .
> .
.
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