From: Noor.Yousuf@shell.com
Date: Tue Apr 22 2008 - 04:42:19 ART
Amir,
I understand your point, and I know that it is locally originated again and it is in the bgp table but I would only like to know the reason why the same route from R3 is not in the BGP table anymore?
Thanks,
-----Original Message-----
From: Amir.Tahir/Wateen/Lahore [mailto:Amir.Tahir@wateen.com]
Sent: dinsdag 22 april 2008 9:28
To: Yousuf, Noor S SITI-ITIBTAE; ccielab@groupstudy.com
Cc: itsfortarget@gmail.com; smorris@ipexpert.com; sadiqtanko@gmail.com
Subject: RE: BGP issue
Dear Noor,
When you have advertised 200.200.200.0/24 on R3, why you are advertising
same network Prefix on R2.
If you have eBGP relationship between R1 & R3, you should learn 200
prefix from R3 and should be visible on R2 as well. You don't have to
re-advertise it.
If you have eBGP relation between R2 & R4, it should be propagated to R4
through the AS (Defined on R2 & R1)...
If Ip route command confuse you, try to run rip between R1 & R2 to have
the NLRI reachibility..
As far as you query is concern... you have defined the 200 prefix
through Network command on R2 and now its locally advertised. You could
verify it through Weight (32768) & AS Path (i).
r2#SH IP BGP
BGP table version is 8, local router ID is 2.2.2.2
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
*> 200.200.200.0 0.0.0.0 0 32768 i
If still you are not clear, Please feel free to call me at
0322-400-2647(amir)
Regards
__________________
Amir Tahir
-----Original Message-----
From: Noor.Yousuf@shell.com [mailto:Noor.Yousuf@shell.com]
Sent: Tuesday, April 22, 2008 12:12 PM
To: Amir.Tahir/Wateen/Lahore; ccielab@groupstudy.com
Cc: itsfortarget@gmail.com; smorris@ipexpert.com; sadiqtanko@gmail.com
Subject: RE: BGP issue
Let me get clear..
R3----EBGP---R1----IBGP-----R2----EBGP----R4
from R3 I have advertised the network 200.200.200.0 in BGP
no sync
network 200.200.200.0 mask 255.255.255.0
ip route 200.200.200.0 255.255.255.0 Null0
I can see the network on R2 bgp table
Now I have advertised the same network in R2
no sync
network 200.200.200.0 mask 255.255.255.0
ip route 200.200.200.0 255.255.255.0 Null0
As soon as I have advertised the network in R2 BGP, I cannot see the
route coming from R1 in the BGP Table, I thought I should see both
routes in BGP table but only one in Routing table.
r2#SH IP BGP
BGP table version is 8, local router ID is 2.2.2.2
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
*> 200.200.200.0 0.0.0.0 0 32768 i
Can someone explains why?
Thanks,
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