From: Godswill Oletu (oletu@inbox.lv)
Date: Mon Sep 12 2005 - 17:07:13 GMT-3
Did you try...
#router ospf 1
#network <e0 network> <wildcard mask> area <ur appropriate area #>
I understood what you were saying, but my point is, if a network is present
in 'eigrp 1' table, 'redistribute eigrp 1' will redistribute it regardless
of the route-map connected filter.
'e0' was just a connected route (represented by 'C' in the routing table)
and not an 'eigrp 1' route on R2, hence it was filtered out by the
'redistribute connected .....route-map...' statement.
HTH
Godswill Oletu
----- Original Message -----
From: "Jens Petter Eikeland" <jenseike@start.no>
To: "'Godswill Oletu'" <oletu@inbox.lv>; <zero5291@gmail.com>
Cc: <ccielab@groupstudy.com>; <kumara.shunmugam@wipro.com>
Sent: Monday, September 12, 2005 1:02 PM
Subject: SV: redistribution between eigrp and ospf
>I will try explain this again, because I know that I am right after I have
> tested this out. Me too thought this sounded far out when I first learn
> about it, and needed to see it with my own eyes before I belived it, but
> after tested this in the rack many times I know this is how it works, so
> please test it your selfe man...
>
> First of, e0 of r2 is in this scenario is not redistributed in to eigrp,
> but
> is put in to eigrp with the network command. The hidden command that the
> router do when you enter any network in to the routin prosess with the
> network command is doing a hidden redistributed connected withs include
> all
> the local networks that you entered in with the network command. This is
> how
> it works :
>
> Router eigrp 1
> Network (e0)
>
> When you enter this command the router put this networks in to the routing
> process by entering :
>
> Router eigrp 1
> Redistribute connected route-map connected-local routes
> Route-map connected-local-routes
>
> The router will never show this command in the config, but this is what
> the
> router actually do.
>
> So
>
> When you then do a redistribute connected in to the other routing process
> (ospf here) with the command :
>
> Interface loopbac 0
> Ip address xx.xx.xx.xx
>
> Router ospf 1
> Redistribute eigrp 1 subnets
> Redistribute connected subnets route-map loopback
> Route-map connected permit 10
> Match interface lo0
>
> When you do this, you will breake the redistribute connected that the
> router
> did for entering e0 in to the routing table(routing process of r2). The
> way
> to fix this is to include this router in to this redistributing process
> like
> this :
>
> Route-map loopbac
> Match interface lo0 e0 (eigrp's e0 network)
>
>
> I suggest you lab this up before you say that I am wrong, because this is
> how the routing process works in a cisco router when you do this kind of
> redistributing on the router. This goes only for when you do this.
>
> Jens P
>
>
>
> -----Opprinnelig melding-----
> Fra: Godswill Oletu [mailto:oletu@inbox.lv]
> Sendt: 12. september 2005 18:42
> Til: Jens Petter Eikeland; zero5291@gmail.com
> Kopi: ccielab@groupstudy.com; kumara.shunmugam@wipro.com
> Emne: Re: redistribution between eigrp and ospf
>
> Ali,
>
> If you can, post configs from R1 & R2.
>
> Just redistributing connected with a route-map will not make 'e0' or other
> routes redistributed from eigrp to disappear from your routing table or
> the
> routing table of R1. R2 will treat each statement one after the other and
> in
>
> a top to bottom fashion (redistribution will be treated first and your
> network statements will be rearranged and treated one after the other
> after
> the redistribute command).
>
> If the network of e0 is not been advertised by ospf separately (ie you are
> not using 'network <e0 network> area <#>' under your ospf process or any
> command that will advertise it> and it is only been advertised under your
> eigrp process and u are relying on the 'redistribute' command to send it
> to
> ospf, make sure you have 'redistribute eigrp <as#>.....' under your ospf
> process with the 'redistribute connected...' . Redistribute eigrp <as#>
> will
>
> take care of all routes from eigrp including your 'e0' and the
> 'redistribute
>
> connected route-map' will filter your connected networks by the route-map
> and only advertise the ones that passed the test.
>
> Posting your configs will sort things out and put you in the right
> track.....
>
> HTH
> Godswill Oletu
>
> ----- Original Message -----
> From: "Jens Petter Eikeland" <jenseike@start.no>
> To: <zero5291@gmail.com>
> Cc: <ccielab@groupstudy.com>; <kumara.shunmugam@wipro.com>
> Sent: Monday, September 12, 2005 11:50 AM
> Subject: SV: redistribution between eigrp and ospf
>
>
>> Hi
>>
>>
>>
>> What do you mean. This is how the router is behaving. Please lab it up
>> yourselfe. I have done it several times, and
>> this happens every time
>>
>>
>>
>> Jens Petter Eikeland
>>
>>
>>
>>
>>
>> _____
>>
>> Fra: Ali.Huang [mailto:zero5291@gmail.com]
>> Sendt: 12. september 2005 17:48
>> Til: Jens Petter Eikeland
>> Kopi: ccielab@groupstudy.com; kumara.shunmugam@wipro.com
>> Emne: Re: redistribution between eigrp and ospf
>>
>>
>>
>> Thanks your replies.
>>
>> I wonder if it is a default behavior,I doubt.
>>
>> If not redistribute connected ,I checked the routing table,and found the
>> metric of e0 doesn't like a connected network at all.
>>
>> So I feel doubt.
>>
>>
>> On 9/12/05, Jens Petter Eikeland <jenseike@start.no> wrote:
>>
>> Ok, I have done some reachearc and found what is happening to the
>> router -
>>
>> When you do redistribution here between eigrp and ospf (or any other
>> routing protocol.
>>
>> Router eigrp 1
>> Network ( e0 )
>> Redistribute ospf 1
>>
>> (the router will by default run this command)
>> Redistribute connected subnets route-map conn
>>
>> Route-map default permit 10
>> Match interface e0
>>
>> (This is what the router do when you add a network command
>> to the routing process to add the nets in to the routing table
>> automaticly)
>>
>> When you do a redistributed conected on the same router with a match int
>> Lo0
>>
>> Router ospf 1
>> Redistribute connected subnet route-map conn
>>
>> Route-map conn
>> Match int lo0
>>
>> When you do this you will loose the Ethernet interface that you
>> advertised
>> in to eigrp
>> from the routing table and you will breake the redistribution process
>> that
>> eigrp did on its connected interfaces. This is a default behaviour of
>> cisco
>> routers.
>>
>> You can solve this by doing in ospf :
>>
>> Redistributed connected permit 10 route-map conn
>>
>> Route-map conn
>> Match interface e0
>>
>> In addition to the connected loopback you redistributed in earlier
>>
>>
>>
>> Hope this explain this for you. This is a behaivur that the router has,
>> and
>> this is something you need to think of when you do redistribution on a
>> border router
>>
>> Jens P
>>
>>
>> -----Opprinnelig melding-----
>> Fra: nobody@groupstudy.com [mailto:nobody@groupstudy.com] Pe vegne av
>> Ali.Huang
>> Sendt: 12. september 2005 13:35
>> Til: Cisco certification
>> Emne: redistribution between eigrp and ospf
>>
>> hi,group,
>> Topo:R1---ospf-----(s0)R2(e0)---eigrp
>> I do bi-direction redistribution.work well.and the subnet of e0 was
>> diaplayed in R1 routing table.But when I want to redistribute loopback0
>> of
>> R2 into ospf domain,use the following clauses;
>> route-map CON permit 10
>> match interface Loopback0
>> router ospf 10
>> redistribute connected metric-type 1 metric 100 subnets route-map CON
>> The subnet of e0 disappeares from R1 routing table,and the loopback0 of
>> R2
>> OK.If removes the redistribute connected,OK.it come back.who can tell me
>> why?
>>
>> THX.
>> Ali.huang
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
>> http://www.groupstudy.com/list/CCIELab.html
>>
>>
>>
>>
>> --
>> THX.
>> Ali.huang
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
>> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Sun Oct 02 2005 - 14:40:14 GMT-3