09-21-2017 07:52 PM - edited 03-05-2019 09:10 AM
Hi all,
It's strange what happen to my BGP router,
i have route map set local preference to 110 applied on both of my Ustream so they would balance my outbound traffic,
what happen is i tried to adjust my local preference on other ISP to a value of 150 and my BGP teared down, re-establish and prefix was reloaded again, why is that it applied automatically?
i thought, it can only be applied after i reset BGP session or do clear ip bgp soft in to prevent BGP tearing down.
09-22-2017 12:52 AM
Hello,
interesting. Do you have soft reconfiguration configured ? Can you post the configs of both ends ?
Also, check with 'show ip bgp neighbor x.x.x.x' if both ends support route refreshing, if they do, you should find a line like the one below:
Neighbor capabilities:
Route refresh: advertised and received(new)
That said, soft reconfig would take precedence...
09-22-2017 01:28 AM - edited 09-22-2017 01:30 AM
Yes i have that configurations,
Im not sure regarding the other side configurations since this is a live config.
This also happen during AS prepending to the other upstream, Route-map take effect immediately and more inbound traffic is received from this upstream as expected, BUT BGP was not tear down,
I dont know if this is hardware issue, since im getting full routing table on my upstreams, and when i try to adjust local pref on route map, both of my upstream went down but immediately established its peering on both of them, Remember i haven't yet done "clear ip bgp neighbor x.x.x.x" to let the route map take effect
Thanks Sir.
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