From: Przemyslaw Karwasiecki (karwas@xxxxxxxxxxx)
Date: Wed Feb 20 2002 - 23:39:35 GMT-3
All,
I am desperatly trying to find some deeper logic
in the way how redistribution works.
There are 2 routers. They exchange prefixes via iBGP.
There is no static injection into BGP on any of them.
Step 1
------
1. router 1 runs rip on its loopback
2. router 1 runs ospf on its ethernet
3. router 1 redistributes rip into ospf
-- verifications that this redistribution works:
a) sh ip ospf database external - shows loopback ip there
b) sh ip route on router 2 - shows loopback ip as O E2
4. router 1 redistributes ospf (internal external 1 external 2)
into BGP.
Problem:
The only route in BGP is IP of the ethernet.
Route redistributed from rip is missing in BGP.
Step 2
------
1. router 2 runs ospf and is adjacent with r1
-- both routes originated on r1 are shown in RIB on roter 2:
a) ethernet route as 0
b) loopback route as O E2 (redistributed as such from rip on r1)
2. redistribution from ospf into bgp is removed from router 1
3. redistribution from ospf into bgp is configured on router 2
(internal external 1 external 2)
4. All ospf routes (O and O E2) are redistributed into BGP.
Why -- ????
Why the same redistribution, from the same OSPF database
performed on 2 routers have different results????
And, please note that in step 1 redistribution was partially
sucsesfull, DESPITE of the fack that no prefixes has been in RIB.
Any ideas?
And, please forgive me if I have overlooked some recent posts
about how redistribution REALLY work. I was following them,
but maybe I overlooked some post addressing my question.
Thanks,
Przemek
PS. Similar problem is in well known lab number 2, but what I presented
here is totally generic.....
This archive was generated by hypermail 2.1.4 : Thu Jun 20 2002 - 13:46:29 GMT-3