Re: OSPF redistribution into eBGP

R2------ospf------R1------BGP------R3
**
*R2(config-if)#do show run | begin router ospf*

router ospf 1

 router-id 2.2.2.2

 log-adjacency-changes

 network 2.2.2.2 0.0.0.0 area 0

 network 11.1.1.2 0.0.0.0 area 0

 default-information originate always

!

*R1#show ip route ospf*

     2.0.0.0/32 is subnetted, 1 subnets

O 2.2.2.2 [110/65] via 11.1.1.2, 00:18:51, Serial1/1
------------------------------`Loopback 0 of R2

O*E2 0.0.0.0/0 [110/1] via 11.1.1.2, 00:18:51,
Serial1/1---------------------------`Default-route from R2

R1#

*R1(config-router)#do show run | begin router bgp*

router bgp 100

 no synchronization

 bgp log-neighbor-changes

 redistribute ospf 1 match internal external 1 external 2

 neighbor 10.1.1.3 remote-as 300

 no auto-summary

!

*R1#show ip bgp*

BGP table version is 4, local router ID is 1.1.1.1

Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal,

              r RIB-failure, S Stale

Origin codes: i - IGP, e - EGP, ? - incomplete

   Network Next Hop Metric LocPrf Weight Path

*> 2.2.2.2/32 11.1.1.2 65 32768 ?

*> 3.3.3.3/32 10.1.1.3 0 0 300 i

*> 11.1.1.0/24 0.0.0.0 0 32768 ?

R1*#--------------------------------------------------------------**`Default-
route
from OSPF not redistributed into eBGP*

*R3#show ip bgp*

BGP table version is 18, local router ID is 3.3.3.3

Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal,

              r RIB-failure, S Stale

Origin codes: i - IGP, e - EGP, ? - incomplete

   Network Next Hop Metric LocPrf Weight Path

*> 2.2.2.2/32 10.1.1.1 65 0 100 ?

*> 3.3.3.3/32 0.0.0.0 0 32768 i

*> 11.1.1.0/24 10.1.1.1 0 0 100 ?

R3*##--------------------------------------------------------------**`Default
-route
from OSPF not redistributed into eBGP*

On Tue, Jan 25, 2011 at 2:01 PM, Aaron Riemer <ariemer_at_amnet.net.au> wrote:

> Did you include the default information-originate command under the OSPF
> process?
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Usha
> Rani
> Sent: Tuesday, 25 January 2011 3:50 PM
> To: Cisco certification
> Subject: OSPF redistribution into eBGP
>
> Hi,
> I have a question on OSPF redistribution into BGP.
>
>
> R2----ospf----R1---BGP-----R3
>
>
>
>
>
> 1. Configured OSPF between R1 and R2
>
> 2. Advertised R2 s loopback in OSPF also R2 is advertising
> default-route always.
>
> 3. Configured eBGP between R1 and R3
>
> 4. In R1, Redistributed ospf routes into BGP (redistribute ospf 1
> match internal external 1 external 2)
>
> 5. In R3, its observed that all the OSPF routes have been
> redistributed into BGP, except the default-route.
>
>
>
> P.S: If I configure EIGRP between R1 and R3 and redistribute OSPF into
> EIGRP, even the default-route is getting redistributed into EIGRP.
>
>
>
> *Is this the expected behavior?*
>
>
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Received on Tue Jan 25 2011 - 15:25:37 ART