From: Casassa, Nathan (ncasassa@xxxxxxxxxxx)
Date: Wed Apr 18 2001 - 23:46:33 GMT-3
check www.precept.com
-----Original Message-----
From: Mannan Venkatesan [mailto:venkat_m@ins.com]
Sent: Wednesday, April 18, 2001 10:30 PM
To: jconnary@cisco.com
Cc: ccielab@groupstudy.com
Subject: summary-address in ospf and redistribution
Oops, typo : I missed 'redistribute ospf 10 metric 1000 100 255 1 1500'
command while typing this email....
Thanks,
Mannan
----- Original Message -----
From: "Mannan Venkatesan" <venkat_m@ins.com>
To: "Connary, Julie Ann" <jconnary@cisco.com>
Cc: <nobody@groupstudy.com>
Sent: Wednesday, April 18, 2001 10:14 PM
Subject: Re: summary-address in ospf and redistribution
> Hi,
> I was trying this scenario. Have a question for you. Where did you use
> route-map? When I used route-map on the redistribution router, the summary
> route( 170.100.2.0 ->null0) disappeared from the routing table and I
> couldn't ping OSPF networks from IGRP router.
>
> IGRP IGRP/OSPF
> Area 0 OSPF Area 1
> -------------------R1------------------------R2--------------------------
-R
> 3----------------------R4--
> 170.100.1.0/24 170.100.4.0/25 170.100.2.4/30
> /29, /28, /30 networks
>
>
> R2 Config:
> router ospf 10
> summary-address 170.100.2.0 255.255.255.0
> redistribute igrp 10 metric-type 1 subnets route-map sum
> network 170.100.2.4 0.0.0.3 area 0
> !
> router igrp 10
> network 170.100.0.0
> !
> no ip classless
> access-list 1 permit 170.100.2.0 0.0.0.255
> route-map sum deny 10
> match ip address 1
> !
> route-map sum permit 20
> !
>
> I could able to filter that E1 route on R3 by using distribution-list in.
> But the OSPF database still had that E1 route which is the normal behavior
> of OSPF.
>
> I would like to filter it on the redistribution router. Any advice?
>
> Thanks,
> Mannan
>
>
>
>
>
> ----- Original Message -----
> From: "Connary, Julie Ann" <jconnary@cisco.com>
> To: <SherefMohamed@cdh.org>
> Cc: <ccielab@groupstudy.com>; <nobody@groupstudy.com>
> Sent: Tuesday, January 23, 2001 12:31 PM
> Subject: Re: summary-address in ospf and redistribution
>
>
> I tested a similar theory with route-maps and worked
> like a champ.
> Beware - the fatkid lab posted solution
> (http://www.fatkid.com/html/501_expert_redistribution_-_ro.html)
> does not use route-maps - and the posted routing tables - however
reflect
> that route-map were used.
>
> Julie Ann
>
> At 09:55 AM 1/23/2001 -0600, SherefMohamed@cdh.org wrote:
>
> >You need to do mutual redistribution between OSPF and IGRP,
> >the idea is to not allow IGRP send back to OSPF the summary address !
> >Here is how I will do it:
> >
> >!
> >router igrp 2
> >..........
> >distribute-list 10 out ospf
> >..........
> >!
> >router ospf 1
> >...........
> >distribute-list 11 out igrp
> >...........
> >!
> >
> >access-list 10 deny 170.10.2.0 0.0.0.255
> >access-list 10 permit 0.0.0.0 255.255.255.255
> >!
> >access-list 11 permit 172.10.2.0 0.0.0.255
> >access-list 11 deny 0.0.0.0 255.255.255.255
> >
> >Please test it & tell me how it works !
> >
> >Thanks
> >Sheref
> >
> >
> >
> >
> >
> >
> > "Connary,
> >
> > Julie
> > Ann" To: ccielab@groupstudy.com
> >
> > <jconnary@cis cc:
> >
> > co.com> Subject: summary-address in
> > ospf and redistribution
> > Sent
> > by:
> >
> > nobody@groups
> >
> > tudy.com
> >
> >
> >
> >
> >
> > 01/23/2001
> >
> > 08:37
> > AM
> >
> > Please
> >
> > respond
> > to
> >
> > "Connary,
> >
> > Julie
> > Ann"
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >Hi All,
> >
> >I ran across a practice lab and another fat-kid lab that use the ospf
> >summary-address to overcome
> >vlsm to fsm issues when redistributing ospf into igrp:
> >
> >
> >
> >situation: The ospf connected interface has a longer mask than the IGRP
> >connected interface.
> > area-range does not work because it is on the same
> >router.
> >
> > The Fatkid lab - expert redistribution - solves this with a
> >summary-address.
> >
> >Question - does this not inject E2 routes back into your OSPF domain?
> >
> >
> >OSPF area 2
> >170.10.128.4 - 255.255.255.192
> >|
> >|
> >|
> >R4 -----------IGRP - 170.10.2.4 255.255.255.0
> >
> >To redistribute the ospf interface into IGRP a summary-address is
> >used: summary-address 170.10.128.0 255.255.255.0
> >
> >But then in the ospf domain you get an E2 route to 170.10.128.0 in your
> >ospf domain.
> >
> >So how do you prevent this E2 route into OSPF - can you filter it?
> >
> >Thoughts?
> >
> >remember - no static, no default.
> >
> >Julie Ann
> >
> >
> >
> >
> >------------------------------------------------------------------------
> > Julie Ann Connary
> > | | Network Consulting Engineer
> > ||| ||| Federal Support Program
> > .|||||. .|||||. 13635 Dulles Technology
Drive,
> >Herndon VA 20171
> > .:|||||||||:.:|||||||||:. Pager:
> 1-888-642-0551
> > c i s c o S y s t e m s Email: jconnary@cisco.com
> >
> >------------------------------------------------------------------------
> ------------------------------------------------------------------------
> Julie Ann Connary
> | | Network Consulting Engineer
> ||| ||| Federal Support Program
> .|||||. .|||||. 13635 Dulles Technology Drive,
> Herndon VA 20171
> .:|||||||||:.:|||||||||:. Pager: 1-888-642-0551
> c i s c o S y s t e m s Email: jconnary@cisco.com
>
> ------------------------------------------------------------------------
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