[members-discuss] An ISP offers to announce our prefix. Is that normal?
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Daniel Ponticello
daniel.ponticello at redder.it
Tue Nov 12 19:00:26 CET 2019
Hi, I see your point and I agree. In the end it is just a matter of setting the boundaries of up to where the responsability of the ISP is limited to, like with any other service. WBR, Daniel Il 12/11/2019 17:24, Gert Doering ha scritto: > Hi, > > On Tue, Nov 12, 2019 at 01:19:05PM +0100, Daniel Ponticello wrote: >> As far as L3 SLA, I never heard of doing BGP causing an SLA problem, can >> you ask them why is that? If that would be true, nobody would do IP >> transit anymore ;) > > It depends a bit on the specific wording and the definition of "S"ervice > that you have SLAs on. > > If one of our customers runs their own BGP with their own BGP policies > and a second BGP uplink, and then complains to us "we cannot reach > someone else iin the Internet?", and I *can* reach this prefix, debugging > this is much harder than "it does not work from our AS" - because there's > another ISP involved, some unknown-to-us BGP config, it might be route > flap dampening triggered "somewhere". > > So, of course we help our customer troubleshoot this, and usually we can > get it fixed. > > Can I give a SLA on something I do not fully control? No... > > Now, if you give a L3 SLA on "can reach ISP network" and "ISP network > can reach the world", this is easy, but not helping the end customer who > expects "can reach the whole Internet"... but, given that they can > easily mess up their own BGP setup ("set community $no-export-to-foo"), > nobody can put hard guarantees on that. > > Gert Doering > -- NetMaster >
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