That's the point! I can't reach the next hope which is in a different AS and the link between the two ASes is not advertised to any iBgp routers. In the show ip bgp; the route has (*) which means (valid). Frankly I'm not sure what Cisco means by Valid. From what I'v read till now, (Valid) might mean that the route is a valid BGP route (it has all the proper BGP information) but (and I'm quoting here) "The fact that this router doesn't know how to get to the particular route is different".Can anyone please confirm this? > Date: Tue, 13 Nov 2012 13:07:12 +1100 > Subject: Re: [OSL | CCIE_RS] BGP Valid Routes > From: [email protected] > To: [email protected] > CC: [email protected] > > Can you get to the next hop ok? BGP (or any other RP) does not like > it when the next hop is unreachable. Try to ping the next hop. If > you cant, look into that. I also notice you are using > route-reflectors. Are they set up properly? ie > "route-reflector-client" on the RR for all reflector client peers? > > Cheers, > Matt > > CCIE #22386 > CCSI #31207 > > On 13 November 2012 13:01, imad Abdallah <[email protected]> wrote: > > Here's the relevant outputs: > > > > sh ip bgp 110.0.0.0 > > BGP routing table entry for 110.0.0.0/8, version 0 > > Paths: (1 available, no best path) > > Not advertised to any peer > > 54 50 60, (Received from a RR-client) > > 23.0.0.3 (inaccessible) from 12.0.0.2 (2.2.2.2) > > Origin IGP, metric 0, localpref 100, valid, internal > > > > show ip rou 23.0.0.3 > > % Network not in table > > > >> From: [email protected] > >> Date: Tue, 13 Nov 2012 04:50:11 +0300 > >> To: [email protected] > >> CC: [email protected] > >> Subject: Re: [OSL | CCIE_RS] BGP Valid Routes > >> > >> When i run sh ip bgp ipaddress > >> It say: > >> > >> Bestpath 0. > >> > >> Not advertised to any neighbor. > >> > >> But it is still considered valid! > >> > >> Sent from my iPhone > >> > >> On Nov 13, 2012, at 4:46 AM, "Samir Idris" <[email protected]> wrote: > >> > >> > where do you see it as valid? Locally? > >> > > >> > On Tuesday, November 13, 2012, imad Abdallah <[email protected]> > >> > wrote: > >> > > Hi All, > >> > > What's Cisco's criteria on setting a BGP route as valid?I used to > >> > > think that the route must pass a series of check including "check if > >> > > NEXT_HOPE is reachable". But I did a small lab where the NEXT_HOPE is > >> > > unreachable but the BGP route still shows as "valid"!Couldn't find a > >> > > clear answer from Cisco documentation. > >> > > _______________________________________________ > >> > > For more information regarding industry leading CCIE Lab training, > >> > > please visit www.ipexpert.com > >> > > > >> > > Are you a CCNP or CCIE and looking for a job? Check out > >> > > www.PlatinumPlacement.com > >> > > > >> > > http://onlinestudylist.com/mailman/listinfo/ccie_rs > >> > > > >> > > >> > -- > >> > Samir Idris > >> _______________________________________________ > >> For more information regarding industry leading CCIE Lab training, please > >> visit www.ipexpert.com > >> > >> Are you a CCNP or CCIE and looking for a job? Check out > >> www.PlatinumPlacement.com > >> > >> http://onlinestudylist.com/mailman/listinfo/ccie_rs > > > > _______________________________________________ > > For more information regarding industry leading CCIE Lab training, please > > visit www.ipexpert.com > > > > Are you a CCNP or CCIE and looking for a job? Check out > > www.PlatinumPlacement.com > > > > http://onlinestudylist.com/mailman/listinfo/ccie_rs _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
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