BGP routes received from neighbour,but not installed in routing table

[gabelz]

HI all,

just a question about BGP routing on NX-OS,

ISP3 is correctly sending routes to ISP1 and ISP1 is correctly receiving:

Now the issue is that all the routes coming from R3-1:

*>e10.10.10.0/24 70.70.70.2 0 100 3333 i
*>e10.20.20.0/24 70.70.70.2 0 100 3333 i
*>e10.30.30.0/24 70.70.70.2 100 3333 i
*>e70.70.70.0/30 70.70.70.2 0 100 3333 i

are not present in ISP1 routing table:

GNS3 enviroment,Cisco NX-OSv 7.30.

Any suggestion?

Thanks in advance,

MG

[MHM Cisco World]

Check below 

Thanks A Lot
MHM

[Harold Ritter]

Hi @gabelz ,

On router ISP3, you need to use

next-hop-self

on neighbor configuration to ISP1.

Regards,

[gabelz]

HI @Harold Ritter ,

i already tried command ,but no luck:

thanks for your time!

MG

[Harold Ritter · Accepted solution]

Hi @gabelz ,

It is a bit different under NXOS. Try the following:

router bgp 4444

neighbor 30.30.30.1

address-family ipv4 unicast

next-hop-self

Regards,

[gabelz]

Hi @Harold Ritter ,

worked only adding remote-as to neighbour string or it stayed in idle,but ,anyway,that was the solution.

Many thanks!

MG

[MHM Cisco World]

No need to see config'

I know the correct issue.

[gabelz]

Hi there,

thanks for your answer,70.70.70.0/30 is the P2P between R3-1 router (not NSK) and NSK ISP3 and route 70.70.70.0/30 is present in both and advertised trough BGP to all the ISPs NSK in the backbone(ISP1 AND ISP2),but the problem that all the routes coming from R3-1 are ADVERTISED correctly to ISP routers,RECEIVED correctly from ISP routers,but are not present in the routing table.

Thanks in advance,

MG

[MHM Cisco World]

Yes it receive from ISP but see the next hop' the next hop is also receive via bgp it not appear as directed connect nor as static nor igp.

Check 70.70.70.x 

Thanks A Lot
MHM