From: John Conzone (jkconzone@xxxxxxxx)
Date: Mon Sep 11 2000 - 19:59:46 GMT-3
Damien, you are correct sir (spoken in my best Ed McMahon/Phil Hartman
voice).
Distribute list out will not owrk with ospf because is uses LSA and a
database and does not exchange "routes" as do other routing protocols.
----- Original Message -----
From: "damien" <damien@clara.co.uk>
To: "Alejandro Cadarso" <a.cadarso@uniway-tec.com>; <earl@linkline.com>;
"ccielab" <ccielab@groupstudy.com>
Sent: Monday, September 11, 2000 6:16 PM
Subject: Re: OSPF Filtering
> 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