Hi all Can I have questions about bgp and ospf 1/ Do I have to redistrt bgd in ospf to make ospf to know which upstrem bgp routers to go out 2/ If yes, how many routes can ospf database handle as one full bgp table is about 400,000 routes 3/ When we have 8 ospf routers to run "redistrubt bgp", ls it 8 x 400,000 routes in ospf database? 4/ If not redistribted bgp, how ospf to know which upstream to go out Thank you for your help
Nope, run iBGP, have only next-hops in OSPF. Regards, Jeff On May 18, 2012, at 19:14, "Deric Kwok" <deric.kwok2000@gmail.com> wrote:
Hi all
Can I have questions about bgp and ospf
1/ Do I have to redistrt bgd in ospf to make ospf to know which upstrem bgp routers to go out
2/ If yes, how many routes can ospf database handle as one full bgp table is about 400,000 routes
3/ When we have 8 ospf routers to run "redistrubt bgp", ls it 8 x 400,000 routes in ospf database?
4/ If not redistribted bgp, how ospf to know which upstream to go out
Thank you for your help
Hi Deric, I would strongly suggest that you watch a couple of the NANOG tutorials on routing. The would help you answer these and other questions. Go to this page - http://www.nanog.org/meetings/archive/ - pick a meeting and find the BGP tutorial. There are a few taught each year. Barry Sent from my iPad On May 18, 2012, at 10:13 AM, Deric Kwok <deric.kwok2000@gmail.com> wrote:
Hi all
Can I have questions about bgp and ospf
1/ Do I have to redistrt bgd in ospf to make ospf to know which upstrem bgp routers to go out
2/ If yes, how many routes can ospf database handle as one full bgp table is about 400,000 routes
3/ When we have 8 ospf routers to run "redistrubt bgp", ls it 8 x 400,000 routes in ospf database?
4/ If not redistribted bgp, how ospf to know which upstream to go out
Thank you for your help
Hi Deric, On May 18, 2012, at 5:14 PM, Deric Kwok <deric.kwok2000@gmail.com> wrote:
1/ Do I have to redistrt bgd in ospf to make ospf to know which upstrem bgp routers to go out
Just an addition to what the others have already said. Redistributing BGP into OSPF is rarely an effective thing to do. Am not sure OSPF can handle that number of routes well.
2/ If yes, how many routes can ospf database handle as one full bgp table is about 400,000 routes
3/ When we have 8 ospf routers to run "redistrubt bgp", ls it 8 x 400,000 routes in ospf database?
I'd think so, as each of the 8 routers will generate type 5 LSAs for their 400k routes from BGP.
4/ If not redistribted bgp, how ospf to know which upstream to go out
More important question is why do u want OSPF to know that information? Is it the right protocol to do that?
Thank you for your help
participants (4)
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Barry Greene -
Deric Kwok -
Jeff Tantsura -
Mukom Akong T.