MikroTik

Hi,

I'm running EBGP to 3 upstreams using RB1000
2 Upstreams using Cisco 7200VXR
1 Upstream using Juniper M120

I have no difficulty to advertise my prefix to upstreams with Cisco router even when I'm using advance filter.

But advertise to Juniper is rather difficult.
Sometime, even when my prefix shown at "routing bgp advetisement" print, the prefix not shown in the Juniper router.
And sometime when the juniper receive the prefix in the bgp table, the prefix never put in the juniper main routing.
I do not use any filter on the peer to Juniper. And my upstream admin said that he also did not put any filter to my peer.

Already tested the v3.22 and v3.25.
Do I miss something?
Has anyone ever doing peering to Juniper using RB1000?
Has anyone having same problem with me?
Is it possible if the problem at Juniper side?

Thank you for any help.

Aldhy SP

check what the Mikrotik peer is advertising. If the route isn't installed in the Juniper's routing table, it's most likely due to an "unuseable path

juniper> show route <your prefix> hidden extensive (I think)

oh, and I did do an RB1000 - Juniper peering justthe other day and this is live and routing traffic as we speak.

Problem solved, my upstream using local preference above their OSPF network and redistribute their BGP and put their preference to their upstream

That is why my prefix never choose as the best path since I also advertise my prefix to other upstream.

After they filter receiving my prefix from their upstream then everything goes normal.

Thank you.

Aldhy SP

This problem still exists Our Mikrotik ASBR is connected to Juniper at our BGP peer and they say they don't see advertisements. The same MT router is connected to Cisco at our other peer and everything is fine there.

Fortunately, everything worked after they restarted Juniper So, they also have bugs