[j-nsp] inject unresolvable static route via bgp

[Alexander Arseniev]

Hello,

Is 2.2.2.2 resolvable on a core router then?

Via in interface/connected subnet perhaps?

If yes then announce all conected subnets from core router(s) via iBGP 
to Your VMX.

Then configure Your statics on VMX with "resolve" knob, and announce 
them via iBGP back to core router(s). Your VMX will keep the original 
"protocol NH" as specified in VMX config.

HTH

Thx
Alex


On 22/06/2017 12:39, Alexander Dube wrote:
> Hello,
>
> we try to implement a route injection with a vmx to reduce the count of static routes on our core routers ( a very large amount ... )
>
> I've the problem, that if i set a static route on the vmx, it will be advertised with the wrong next-hop ( self in this case )
> The session between the vmx and our core router is ibgp currently. Even with multihop no-nexthop-change it isnt working
>
>
> For example:
>
> show routing-options static route 1.1.1.1/32
> next-hop 2.2.2.2;
> passive;
>
> This will result in:
>
> show route 1.1.1.1/32 detail
>
> inet.0: 18 destinations, 18 routes (18 active, 0 holddown, 0 hidden)
> 1.1.1.1/32 (1 entry, 1 announced)
> *Static Preference: 5
> Next hop type: Reject, Next hop index: 0
> Address: 0xa06fec4
> Next-hop reference count: 2
> State: <Active Int Ext>
> Local AS: 123
> Age: 2:06
> Validation State: unverified
> Task: RT
> Announcement bits (3): 0-KRT 4-BGP_RT_Background 5-Resolve tree 4
> AS path: I
>
>
> show route advertising-protocol bgp 10.0.0.2
>
> inet.0: 18 destinations, 18 routes (18 active, 0 holddown, 0 hidden)
> Prefix Nexthop MED Lclpref AS path
> * 1.1.1.1/32 Self 100 I
>
>
> Is there any way that the router is advertising the correct unmodified next-hop and not self?
> I know that that this is possible with modifying the next-hop via the export policy and this works very well, but in our specific case this would result into a more than 500k lines policy-statement...
>
> Kind regards
> Alex
>
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