From: damien (damien@xxxxxxxxxxx)
Date: Mon Sep 11 2000 - 19:16:00 GMT-3
Just remember that, the reference you are posting is from fellow CCIE's (not
all working for Cisco), and with all due respect they make
mistakes.......don't take this as Gospel.........! ..remember, if in doubt
try it out....if it does not work thats it..........it does not
work..........
I will try the distribute-out on externals tomorrow in the Lab...but I am
pretty sure it does not work.........maybe I am wrong...........
----- Original Message -----
From: "Alejandro Cadarso" <a.cadarso@uniway-tec.com>
To: <earl@linkline.com>; "ccielab" <ccielab@groupstudy.com>
Sent: Monday, September 11, 2000 9:37 AM
Subject: Re: OSPF Filtering
> Earl,
>
> As you can see that was also my undersatnding, but I tried to filter out
> routes in a ABR on friday and it doesn't work, I can't understand why IOS
> doesn't allow it.
>
> As a reminder in the cco link below:
>
> http://www.cisco.com/warp/public/104/9.html#Q9
>
> "The command distribute-list out works only on the routes being
redistributed
> by the autonomous system boundary routers (ASBRs) into OSPF. It can be
> applied to external type 2 and external type 1 routes, but not to
> intra-area and inter-area routes."
>
> Earl Aboytes wrote:
> >
> > My understanding is that all routers in a single area must have the same
> > database. It makes sense that you cannot filter within an area but you
> > should be able to filter at the ABR to prevent a route from existing in
an
> > area.
> >
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > Earl Aboytes CCIE #6097
> > Senior Technical Consultant
> > GTE Managed Solutions
> > 805-381-8817
> > earl.aboytes@verizon.com
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> > Kenneth Kriel
> > Sent: Sunday, September 10, 2000 5:59 AM
> > To: 'Ccielab; Alejandro Cadarso
> > Subject: RE: OSPF Filtering
> >
> > Hi all,
> >
> > Thank you for your replies, I am sorry I could not attend to it earlier
> > cause I was out of the country.
> >
> > As many have said, distribute lists do not work if it is in the same
OSPF
> > AS. This I found out the hard way, by trying distribute lists incoming
and
> > outgoing on both routers. The route still appears in my OSPF area 0.
> >
> > I would like to assume the following, however, I need confirmation:
> >
> > Distrubute lists do not work within OSPF, due to the link state issue !
> >
> > If you believe differently, and you can prove it please send me your
config.
> > Mine is as follows : (on R2 as per the diagram at the botom !
> >
> > Thank you for your assistance !!!
> >
> > Ken
> >
> > !
> > interface Loopback0
> > ip address 132.1.1.1 255.255.255.255
> >
> > interface Serial0
> > ip address 135.1.2.1 255.255.255.224
> > encapsulation frame-relay
> > ip ospf network point-to-multipoint
> > no ip mroute-cache
> > bandwidth 64
> > no fair-queue
> > clockrate 64000
> > frame-relay map ip 132.1.2.3 104 broadcast
> > frame-relay map ip 132.1.2.4 104 broadcast
> >
> > router ospf 1
> > network 135.1.1.1 0.0.0.0 area 1
> > network 135.1.2.1 0.0.0.0 area 0
> > distribute-list 17 in Serial0
> >
> > access-list 17 deny 192.2.2.0 0.0.0.255
> > access-list 17 permit any
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> > Alejandro Cadarso
> > Sent: Friday, September 08, 2000 6:30 PM
> > To: mark salmon; ccielab
> > Subject: Re: OSPF Filtering
> >
> > For me the distibute-list in works Ok
> >
> > 2503-mad#sh ip ospf dat
> >
> > OSPF Router with ID (190.19.15.225) (Process ID 200)
> >
> > Router Link States (Area 0)
> >
> > Link ID ADV Router Age Seq# Checksum Link
count
> > 190.19.15.193 190.19.15.193 804 0x80000006 0x960E 3
> > 190.19.15.225 190.19.15.225 838 0x800000F5 0x9BE6 2
> > 210.10.10.9 210.10.10.9 7 (DNA) 0x800000EB 0x1FAA 1
> >
> > Summary Net Link States (Area 0)
> >
> > Link ID ADV Router Age Seq# Checksum
> > 190.1.0.0 210.10.10.9 246 (DNA) 0x80000094 0x95D
> > 190.19.15.224 190.19.15.225 766 0x80000095 0xB27
> > 192.19.18.0 210.10.10.9 246 (DNA) 0x80000093 0x47FA
> > 210.10.10.8 190.19.15.193 804 0x80000002 0xACF6
> > 210.10.10.8 210.10.10.9 11 (DNA) 0x8000009D 0x803A
> >
> > 2503-mad#sh ip ro 190.1.0.0
> > % Network not in table
> >
> > Perhaps some misconfigured command or IOS bug.
> >
> > mark salmon wrote:
> > >
> > > II have used the dstributed in with OSPF in the past. At first, the
> > > route was gone from the routing table. After about 1 minute, the
route
> > > was back.
> > >
> > > Geatti wrote:
> > > >
> > > > Remember, OSPF sends LSAs not ROUTES so a distribute-list out on an
> > > > interface is useless.
> > > > You can use a distribute-list in and this should work for blocking
the
> > route
> > > > from the local router.
> > > > If this doesn't work for you post your config.
> > > >
> > > > -----Original Message-----
> > > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf
Of
> > > > Kenneth Kriel
> > > > Sent: Friday, September 08, 2000 9:42 AM
> > > > To: 'Ccielab
> > > > Subject: OSPF Filtering
> > > >
> > > > Gentleman,
> > > >
> > > > How do I filter a route from coming into OSFP ? I know it might be a
> > stupid
> > > > question but I can not get it to work !
> > > >
> > > > Layout
> > > >
> > > > OSPF Area 1 Area 0
> > > > 192.2.2.0/24----|
> > > > |--R1-----R2
> > > > 135.1.x.0/24----|
> > > >
> > > > I do not want to see 192.2.2.0/24 on router R2 !
> > > >
> > > > I tried distribute-list out on R1 and in on R2 but no luck !
> > > >
> > > > Thank you in advance !
> > > >
> > > > Ken
> > > >
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 08:24:55 GMT-3