RE: Redistribution--RIP into BGP

From: SANCHEZ-MONGE,ANTONIO (HP-France,ex2) (antonio.sanchez-monge@hp.com)
Date: Thu Jan 22 2004 - 10:38:25 GMT-3


Hi Ujjwal,

I reproduced your issue, I think the entry comes from the static route:

ip route 100.100.0.0 255.255.0.0 Null0

This gets into the RIP database, do a "show ip rip database" and I think you
will see an entry like this:

100.100.0.0/16 directly connected, Null0

Which, unless filtered, will be redistributed into BGP.

Cheers,
Ato.

            

-----Original Message-----
From: ujjwal_ravindran [mailto:ujjwal_ravindran@indiatimes.com]
Sent: jueves, 22 de enero de 2004 12:21
To: ccielab@groupstudy.com
Subject: Redistribution--RIP into BGP

Hi all,

While redistributing RIP in to Bgp, i am getting some prefixes which i may
not be....

see the router config ......

Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Router
!
!
no ip subnet-zero
no ip domain-lookup
!
!
!
interface Loopback0
 ip address 1.1.1.1 255.255.255.0
 no ip directed-broadcast
!
interface Loopback1
 ip address 100.100.100.100 255.255.255.255
 no ip directed-broadcast
!
interface Loopback100
 no ip address
 no ip directed-broadcast
!
interface Ethernet0
 ip address 192.168.1.1 255.255.255.0
 no ip directed-broadcast
!
interface Serial0
 ip address 10.10.10.1 255.255.255.252
 no ip directed-broadcast
 clockrate 250000
!
interface Serial1
 no ip address
 no ip directed-broadcast
 shutdown
!
router ospf 100
 network 10.10.10.1 0.0.0.0 area 0
 network 192.168.0.0 0.0.255.255 area 15
!
router rip
 version 2
 network 1.0.0.0
 network 100.0.0.0
 network 192.168.1.0
!
router bgp 100
 no synchronization
 bgp log-neighbor-changes
 redistribute rip
 neighbor 10.10.10.2 remote-as 200
 no auto-summary
!
no ip classless
ip route 100.100.0.0 255.255.0.0 Null0
!
!
line con 0
 transport input none
line aux 0
line vty 0 4
!
end

Router#sho ip bgp
BGP table version is 6, local router ID is 100.100.100.100 Status codes: s
suppressed, d damped, h history, * valid, > best, i - internal Origin
codes: i - IGP, e - EGP, ? - incomplete

   Network Next Hop Metric LocPrf Weight Path
*> 1.1.1.0/24 0.0.0.0 0 32768 ?
*> 100.100.0.0/16 0.0.0.0 0 32768 ?
*> 100.100.100.100/32 0.0.0.0 0 32768 ?
*> 192.168.1.0 0.0.0.0 0 32768 ?
*> 200.200.200.0 10.10.10.2 0 0 200 i

Router#

I marked the prefix in red ..please any one can explan how this prefix come
as /16

 

Thanks,

Ujjwal

 
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