From: Ashok Verma \(ashoverm\) (ashoverm@cisco.com)
Date: Mon Mar 01 2004 - 22:20:53 GMT-3
Hi Bob,
I read the document and tried to apply in my scenario .But unfortunately
it still does not work.
As below explained , I need to put R1's Loopback netw(11.1.1.0) in bgp
. And R2 should be seeing it as best route .
On R1 I am doing redistributed connected and also putting the same nw in
ospf configuration also.
R1:
Router bgp 1
Router-id 1.1.1.1
Neigh 2.2.2.2 remot 1
Neigh 2.2.2.2 up lo0
Redistributed connected route-map conn
Router ospf 10
Router-id 1.1.1.1
Network 11.1.1.0 0.0.0.255
Network 10.1.1.0 0.0.0.255 a 1 ( network used between R1 and R2)
Route-map conn
Match ip add 11
Access-list 11 p 11.1.1.0 0.0.0.255
On R2
Router bgp 1
Neigh 1.1.1.1 remot 1
Neigh 1.1.1.1 up lo0
Router ospf 10
Network 10.1.1.0 0.0.0.255 a 1 ( network used between R1 and R2)
Since it is the directly connected netw on R1 so I can not redistributed
the bgp in ospf and get that route to R2( as we do in normal case where
the route is coming from bgp ).So only way I can send that route via
ospf is either put a network command or redistributed connected .In both
the cases the result is same . On R2 I am not getting this as best route
...i am really not finding it Y?
Any suggestion are welcome.
Regards,
Ashok
-----Original Message-----
From: Bob Sinclair [mailto:bsinclair@netmasterclass.net]
Sent: Monday, March 01, 2004 11:30 PM
To: Ashok Verma (ashoverm); ccielab@groupstudy.com
Subject: Re: BGP Question
Ashok,
This looks like the BGP-OSPF RID issue. There is an excellent paper on
this at the following link:
http://www.netmasterclass.net/site/articles/BGP%20Route%20Reflector%20an
d%20synchronization%20rule.pdf
HTH
Bob Sinclair
CCIE #10427, CISSP, MCSE
www.netmasterclass.net
----- Original Message -----
From: "Ashok Verma (ashoverm)" <ashoverm@cisco.com>
To: <ccielab@groupstudy.com>
Sent: Monday, March 01, 2004 3:02 AM
Subject: BGP Question
> Hi All,
>
> I have a basic question about the BGP.
>
>
>
>
> R1 ------------R2-----------R4.
> /
> lo 1: 11.1.1.1/24
>
> R1 is connected to R2 via FR .R2 and R4 on serial link .R1 R2 in same
> AS ( 1) and R4 is in AS 10 . OSPF is running between the R1 and R2 .
>
> If I do the redistribution of the lo1: netwrok in bgp .it will be go
> to R2 but will not shown as the best route on R2. And when I will do
> the NO sync on R2 it will become Best route and sent to R4.
>
> But I don't want to use no sync for this purpose , So I redistributed
> that route in the OSPF also on R1, R2 is learning this route by igp
> also.so by sync law it should be shown as the best route in bgp table
> and shold be sent to R4....But it did not work .
>
> All peering things are working fine .Is anyting I am missing ...what
> we should do if any such condition arise in LAB.
>
> Thanks in advance,
>
> Regards,
>
> Ashok Kumar Verma
> CCIP,CCDP,CCNP
> Network Consulting Engineer
> Customer Advocacy Advanced Service Dep.
> Service Provider AS Div.2
> Cisco Systems, K.K.Japan.
>
> Tel: +81-3-5324-4583
> e-mail: ashoverm@cisco.com
>
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