Inter AS BGP Otion A, ASBR route reflection doesn't work betwean OSPF and BGP

[paratrooper]

Hi dears 

i was trying to bult OPtion A lab and faced a problem 

i saw it was discussed in this forum to be frank i folowed the suggestions about ospf vrf light capabilities but still have some troubles 

may be someone can tell mw what is wrong 

the network is quite simple but i can't redistrubite routes on the ASBRs from ospf to bgp (address familiy etc.) and vise versa 

i attached to the post GNS3 files , could you please check 

thanks in advance 

[Abac · Accepted solution]

Assuming they will be external OSPF routes you are trying to redistribute into BGP......well, you need to tell BGP explicitly to redistribute external routes. By default it only does intra/inter area routes.

So try something like:

redistribute ospf 1 match internal external 1 external 2

and see how you get on.

[paratrooper]

hi , sorry for my late reply
yes you were right it work , could you explain a bit in details what is the reason
and what does this comand do ?
thanks a lot )

[paratrooper]

hi thanks a lot i found the doccument convering redistribution process of ospf into bgp 

https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/5242-bgp-ospf-redis.html

thanks a lot .