[c-nsp] OSPF Cost vs Injected Default Route

[sven.cisco-nsp at huster.me.uk]

* a. Rahman Isnaini R suTan <risnaini at indo.net.id> [2006-03-24 11:04:37 +0700]:

> Sven,
> 
> 
> The primary link we found totally down (from bad qualities).
> Does OSPF have the parameter in related to latency/number of time out so we 
> can manipulate routing using them ?
> I meant if the link in bad qualities so latency/timed out would increase 
> then the best path move to another good link ?

OSPF will only look at the cost and doesn't consider anything like
latency/etc. So as long as you adjacency stays up, you'll forward down this
path.

Sven


> 
> I read about EIGRP... but never implement it regarding the delay paramater 
> in choising a best path.
> 
> Salam,
> a. Rahman Isnaini r. Sutan
> 
> 
> 
> ----- Original Message ----- 
> From: <sven.cisco-nsp at huster.me.uk>
> To: "a. Rahman Isnaini R suTan" <risnaini at indo.net.id>
> Cc: <cisco-nsp at puck.nether.net>
> Sent: Friday, March 24, 2006 6:18 AM
> Subject: Re: [c-nsp] OSPF Cost vs Injected Default Route
> 
> 
> >* a. Rahman Isnaini R suTan <risnaini at indo.net.id> [2006-03-23 18:54:27 
> >+0700]:
> >
> >>Dear Oliver & All,
> >>
> >>
> >>Let say 3 routers A, B and C running OSPF.
> >>A is ASBR, connected to B and C
> >>C connected to A directly & via B.
> >>
> >>For router C which connected with two links :
> >>    - Primary (w/ default route injected from A)
> >>    - Secondary (w/ static default route + metric >110 to B)
> >>
> >>In case of bad quality of primary link (not fully disconnected), I set 
> >>cost
> >>5000 on interface router A towards C.
> >>The default route changed to secondary.
> >>
> >>How cost can affect the changing of default route ?
> >
> >So what does 'sh ip route 0.0.0.0 0.0.0.0' say in that case?
> >
> >Does it really discard the OSPF learned route and use the static or is 
> >just
> >your path selection so that the next-hop for your learned default is now
> >router B?
> >
> >Cheers
> >Sven
> >
> >
> >
>