From: Venkataramanaiah.R (vramanaiah@gmail.com)
Date: Sun Sep 11 2005 - 08:55:25 GMT-3
I am sorry, it was a typo that I called OSPF a DV protocol... It is Post
Lunch session here, so you know why ;-)
On 9/11/05, Venkataramanaiah.R <vramanaiah@gmail.com> wrote:
>
> Hi,
>
> * distance 171 0.0.0.0 <http://0.0.0.0>
255.255.255.255<http://255.255.255.255>1
> Use a permit all wild card, while modifying the distance for routes under
> OSPF. This will cover all the router ids in the area and hence will cover
> all the routes mentioned in access-list 1 although the originator for those
> routes might be different within the area. See JD-I pg 792
>
> OSPF being a distance Vector protocol, the updates could be anyone in the
> area, so you cannot filter a route specifically from a neighbor. Well when
> you want to use the distance command in OSPF, apply to all the guys.
>
> Please correct if i am wrong
>
> Thanks
> -Venkat
>
> On 9/11/05, Lee Donald <Lee.Donald@t-systems.co.uk> wrote:
> >
> > The distance command does not work this way for OSPF. Don't ask me why
> > but
> > for RIP, and I think EIGRP, the config you have would work but not for
> > OSPF.
> >
> > Regards
> >
> > Lee.
> >
> >
> >
> > -----Original Message-----
> > From: FCO.JAVIER TOME MORAN [mailto:fjtm@tid.es]
> > Sent: Sunday, September 11, 2005 10:42 AM
> > To: ccielab@groupstudy.com
> > Subject: OSPF distance command
> >
> > Hi all,
> >
> > Not sure about how distance command works in OSPF. I am working in a
> > frame-relay hub an spoke environment with three routers R1, R2, and R5
> > (R5 as the hub). OSPF network-type has been set as point-to-multipoint
> > non-broadcast, and neighbor cost has been modified to use one of the
> > neighbors (R1) as the preferred path...
> >
> > Here are my configs...
> >
> >
> > On R5...
> > ********
> >
> > router ospf 1
> > router-id 150.1.5.5 <http://150.1.5.5>
> > log-adjacency-changes
> > redistribute eigrp 10 metric-type 1 subnets
> > network 150.1.5.5 <http://150.1.5.5> 0.0.0.0 <http://0.0.0.0> area 0
> > network 173.1.125.5 <http://173.1.125.5> 0.0.0.0 <http://0.0.0.0> area 0
> > <--- This is ip addressing on
> > frame-relay
> > neighbor 173.1.125.1 <http://173.1.125.1> cost 130
> > neighbor 173.1.125.2 <http://173.1.125.2> cost 1562
> > distance 109 173.1.125.2 <http://173.1.125.2> 0.0.0.0
<http://0.0.0.0>BGP_DLSW
> >
> >
> > ip access-list standard BGP_DLSW
> > permit 150.1.2.0 <http://150.1.2.0> 0.0.0.255 <http://0.0.0.255>
> >
> >
> > On R1...
> > ********
> >
> > router ospf 1
> > router-id 150.1.1.1 <http://150.1.1.1>
> > log-adjacency-changes
> > network 150.1.1.1 <http://150.1.1.1> 0.0.0.0 <http://0.0.0.0> area 0
> > network 173.1.13.1 <http://173.1.13.1> 0.0.0.0 <http://0.0.0.0> area 0
> > network 173.1.125.1 <http://173.1.125.1> 0.0.0.0 <http://0.0.0.0> area 0
> > network 173.1.137.1 <http://173.1.137.1> 0.0.0.0 <http://0.0.0.0> area
> > 137
> >
> > On R2...
> > ********
> >
> > router ospf 1
> > router-id 150.1.2.2 <http://150.1.2.2>
> > log-adjacency-changes
> > area 23 nssa default-information-originate metric 100
> > network 150.1.2.2 <http://150.1.2.2> 0.0.0.0 <http://0.0.0.0> area 0
> > network 173.1.23.2 <http://173.1.23.2> 0.0.0.0 <http://0.0.0.0> area 23
> > network 173.1.32.2 <http://173.1.32.2> 0.0.0.0 <http://0.0.0.0> area 0
> > network 173.1.125.2 <http://173.1.125.2> 0.0.0.0 <http://0.0.0.0> area 0
> > distance 109 173.1.125.5 <http://173.1.125.5> 0.0.0.0
<http://0.0.0.0>BGP_DLSW
> >
> > ip access-list standard BGP_DLSW
> > permit 150.1.5.0 <http://150.1.5.0> 0.0.0.255 <http://0.0.0.255>
> >
> >
> >
> >
> > My point is to make R2 (173.1.125.2 <http://173.1.125.2>) as the
> > next-hop to R2 loopback
> > address on R5, and R5 (173.1.125.5 <http://173.1.125.5>) as the next-hop
> > to R5 loopback
> > address on R2. This way I would force BGP and DLSW session to be
> > stablished over the low speed frame-relay circuit between R2 and R5,
> > overriding the cost of the circuit.
> > Nontheless, I get no change on the routing table of R5 and R2.
> >
> > I have also tried using router-id as the source of the routing
> > information in the distance command (i.e "distance 109
150.1.2.2<http://150.1.2.2>
> > 0.0.0.0 <http://0.0.0.0> BGP_DLSW" on router R5 and so on). With this
> > configuration I
> > get the AD of the route change, but the next hop still points to R1.
> >
> > I guess I have some missunderstanding on the technology. Could anyone
> > put some light on the issue?...
> >
> > Thank you in advance
> >
> > JT
> >
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