From: kevin mitnick (kevin_ross46@xxxxxxxxxxx)
Date: Wed May 15 2002 - 22:39:32 GMT-3
Hi,
I have tested this scenario with 4 OSPF routers linked
in a ring topology.
A--B--C--D (D connected to A)
Router B and D originate default.
I configured two routers B and C to orignate default
with equal cost. The other two routers who recieve the
LSA's from the default originating routers will only
choose one best default path although their routing
table indicates an alternaive parth. There is somthing
special about how default routes are treated. I have
yet to put my finger on it.
Schwantz
--- Jason Sinclair <sinclairj@powertel.com.au> wrote:
> All,
>
> I don't wish to sound unhelpful here as this is
> definitely not my intention.
> That said, why don't you lab it and test it. You can
> use debugs and sniffers
> to see what is going on and in my mind this will
> reinforce your knowledge.
> This is just my advice, but I found that when I
> didn't know something
> (unless I needed to know the answer there and then)
> I would always try and
> lab things.
>
> Cheers,
>
> Jason Sinclair CCIE #9100
> Manager, Network Control Centre
> POWERTEL
> Ground Level, 55 Clarence Street,
> SYDNEY NSW 2000
> AUSTRALIA
> office: + 61 2 8264 3820
> mobile: + 61 416 105 858
> * sinclairj@powertel.com.au
>
>
>
>
>
> -----Original Message-----
> From: D. J. Jones [mailto:meganac@attbi.com]
> Sent: Thursday, 16 May 2002 10:41
> To: Giveortake@aol.com; ccielab@groupstudy.com
> Subject: Re: Two Default Routes which path?
>
> I don't believe the packets will alternate based
> on
> sessions. Once the
> first route
> is installed and used, then the router will
> continue to use
> that until the
> link goes down.
> Then it will use the route over serial 1.
> ----- Original Message -----
> From: <Giveortake@aol.com>
> To: <ccielab@groupstudy.com>
> Sent: Monday, May 13, 2002 6:16 PM
> Subject: Two Default Routes which path?
>
>
> > If I have say a 25xx router or any router with
> two serial
> interfaces, and
> I
> > put a default route say
> >
> > ip route 0.0.0.0 0.0.0.0 serial 0
> > ip route 0.0.0.0 0.0.0.0 serial 1
> >
> > What will happen to the packets if there is no
> route in
> the table?
> Will
> > they all go down the first default route? Will
> the
> packets alternate
> based
> > on sessions?
> >
> > Amazing how many smart people with lots of
> experience I
> have asked that do
> > not know the answer to this question including
> myself!
> >
> > Thanks,
> >
> > David
> >
>
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:58:57 GMT-3