I also spent a significant amount of time trying to figure out a way to do this, and was using communities for a while before I found a solution. It turns out that the expression knob lets you use the existing metric as an input, and this works to export the iBGP MED, at least on my 12.3X48 SRX: then { metric { expression { metric multiplier 1; } } } Keenan On 2017-02-21 07:26, Leo Bicknell wrote:
I tried to pull an old trick out of my playbook this morning and failed. I'd like to advertise BGP Metrics on an EBGP session, specifically the existing internal metrics. I know how to do this on a Cisco, but I tried on a Juniper and it seems to be impossible.
I can set a metric in a policy, or put a default metric on the session as a whole, or even set it to IGP. But none of those are what I want. I want the existing metrics advertised as-is, just like would be done over an IBGP session. After an hour of reading documentation and trying a few things, I'm starting to think it may be impossible on JunOS.
Anyone have a tip or trick?