From: Batman (rschotz@xxxxxxxxxxx)
Date: Thu Oct 04 2001 - 07:18:40 GMT-3
this is excellent insite - good work around tricks for the lab
I think the type 5 lsa & type 2 lsa will cause ospf db fluctuations though -
a similar config caused an isdn ospf demand circuit to bounce continuously
in another lab CCIE bootcamp 8) - this was discussed in a previous string in
this group.
somethin to be aware of at lab time.
----- Original Message -----
From: "Michael Snyder" <msnyder@ldd.net>
To: <ccielab@groupstudy.com>; "kenairs" <kenairs@hotmail.com>
Sent: Thursday, September 20, 2001 9:00 AM
Subject: Re: OSPF redis conn
> Both as a internal route and an external route. Thought I think only one
> will show up in the routing table on the router you are on.
>
> Do a show ip ospf data, you should see network lsa for 192.168.1.0 and
also
> a type 5 lsa for it.
>
> BTW, this is both a good thing and a bad thing. If you need to summarize
a
> route, this is a very handy thing to do. To summarize any route in OSPF
you
> need a type 5 external lsa (seed) on a ASBR. The summary command will
grow
> the (seed) lsa to any size mask you need.
>
> Funny, I didn't think of it before, but you use the redistributed
connected
> command to plant a seed (external type 5 lsa), and the summary command to
> grow it.
>
> Also if you are not allowed to use redistributed connected to do this, you
> can do the same thing with another ospf process. On the second ospf
process
> just add the one interface you need, then you must set the selected
> interface to passive, then redistribute the second ospf process into the
> first. You'll get the single type 5 lsa you need.
>
> Back to your example, the bad thing is you also redistributed ALL
connected
> interfaces into OSPF. That's a lot of ghost (extra) lsa 5's introduced
into
> the routing process. Don't do this in the LAB!
>
> Much better to use a route map to choose which connected interfaces to
> insert as LSA 5's.
>
> The Below route map was posted by SFeldberg@edeltacom.com earlier this
week.
> Very handy.
>
> ------------cut----------------
>
> interface Loopback0
> ip address 152.1.11.1 255.255.255.240
> no ip directed-broadcast
> !
> router ospf 1
> redistribute connected subnets route-map Loop0
> !
> route-map Loop0 permit 10
> match interface Loopback0
>
> ------------cut----------------
>
> ----- Original Message -----
> From: "kenairs" <kenairs@hotmail.com>
> To: <ccielab@groupstudy.com>
> Sent: Thursday, September 20, 2001 9:54 AM
> Subject: OSPF redis conn
>
>
> > Hi ,
> > I have a router running ospf . i wanted a specific route to appear as
> External
> > . Below is my partial config.
> >
> > interface ethernet 0
> > ip add 192.168.1.1 255.255.255.0
> >
> > router ospf
> > network 192.168.1.0 0.0.0.255 area 1
> > redistributed connected subnets metric 10
> >
> > How will the 192.168.1.1 being advertied ?
> > As inter area route or external route redistributed into OSPF ?
> >
> > tks
> > **Please read:http://www.groupstudy.com/list/posting.html
> **Please read:http://www.groupstudy.com/list/posting.html
**Please read:http://www.groupstudy.com/list/posting.html
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