[j-nsp] Routeserver next hop issue.

[Chris Kawchuk]

1. Do you have an import policy on the BGP session to the route server? (seeing if maybe you're overwriting protocol-next-hop --  or you may have an inherited policy at a higher level than the group/neighbour...dunno)

2. As you mentioned, What does 'show route receive-protocol bgp <neighbour.ip.of.the.session>' say in terms of the next hop it's sending? You said route-server member, but that doesnt make sense if it's a /24 or something "flat" peering exchange, it should return the next hop of the actual peer (and not the route server's IP).. unless the topology of the exchange is different from what I'm expecting.

I think you're likely doing everything right, but if you can send (sanitised) configs for:

ergo:

show configuration protocols bgp
show configuration policy-options
show route receive-protocol bgp <ip.of.bgp.session> extensive

the 'next hop self' export policy should be on iBGP to the rest of your network. No need to next-hop self on an eBGP session, since JunOS does this for you automatically.

- Ck.



On 11 Apr 2016, at 8:27 am, Jeffrey Nikoletich <jeffn at xfernet.com> wrote:

> First post here. We recently switched from Cisco to juniper and it has been
> an adventure to say the least. We are running in to an issue with BGP
> session with peering exchanges route servers. The session comes online and
> doing a received-protocol it is showing the correct next hop of the other
> route server member. When doing a show route it is showing the next hop as
> the IP of the route server itself. As you can imagine, it is not passing
> traffic correctly.
> 
> 
> 
> We have set the next hop self on the export policy but how do we fix the
> inbound next hop?