Stefan,

Thank you. Now it works.

Ondrej,

Either setting it up in R1 (neighbor 6.6.6.6 next-hop-self) or in RS (if net ~ 3.3.3.0/24 then bgp_next_hop = 6.6.6.100) I see that in the RS's routing table the route takes the appropriate NEXT-HOP (BGP.next.hop: 6.6.6.100). But when I check it on Router1 - the route points to 6.6.6.6.

Best~
 

---
Dean Belev
Product Manager

Neterra Ltd.
Telephone: +359 2 975 16 16
Fax: +359 2 975 34 36
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www.neterra.net

On 17.8.2012 г. 13:45 ч., Ondrej Zajicek wrote:

On Fri, Aug 17, 2012 at 08:38:42AM +0300, Dean Belev (Neterra NMT) wrote:

   Hi all,

   I was performing a home lab and decided to test a new scenario including
   iBGP between a router and RS.
   That's a brief scheme of the lab:

   ###
                    5.5.5.1       5.5.5.2         6.6.6.100/24
                             6.6.6.6/24
   6.6.6.101/24
   Router3 (as3)---eBGP---> Router2 (as2)---iBGP/not a rs_client---> RS
   (as2)---eBGP / rs_client--- > Router1 (as1)
   3.3.3.0/24                            2.2.2.0/24

   1.1.1.0/24
   ###

   Since, as route 3.3.3.0/24 is seen in RS directly attached ( first asn is
   as3) with next-hop 6.6.6.100 (I've set the next-hop manually into the RS's
   config in bgp_in) I expect that Router1 should see it in the same way -
   with hext-hop 6.6.6.100.

The question is whether you set manually real next-hop or bgp_next_hop
attribute. For BGP route propagation, bgp_next_hop attribute is more
important. You should check route attributes by 'show route 3.3.3.0/24
all' on RS and R1.