[c-nsp] eBGP --> OSPF --> eBGP vs eBGP --> iBGP --> eBGP

[a. rahman isnaini r.sutan]

iBGP, also depends on how many your OSPF hops.
if it just one hop, just a simple bgp.
if 2 hops, use RR.
if more than 2 hops -> tunnel not recomended. [sometimes I used to 
bypass layer 2 between hops]...


a. rahman isnaini rangkayo sutan



Adam Greene wrote:
> Hi,
> 
> We run BGP to our upstream providers and OSPF on our local backbone. 
> 
> We have a customer who will be multihomed and needs us to advertise his IP blocks to us via BGP. 
> 
> My question is how best to propagate his AS-PATH prepending to my upstream providers. Is it possible to inject this information into OSPF and then into the eBGP to my upstreams? Or should I plan on establishing iBGP sessions between the backbone router that will be servicing the customer and the routers facing my upstream providers? I assume the latter ....
> 
> Thanks,
> Adam
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