If you're not familiar with how you can engineer traffic on L3's network take a peek at http://www.scn.rain.com/~neighorn/PDF/Traffic_Engineering_with_BGP_and_Level 3.pdf (slightly outdated but still useful)
As far as HE is concerned, when I asked them about communities a few weeks ago all they could offer was a blackhole community. However, as Jay said, you're likely at the mercy of the blended provider and what they support. > -----Original Message----- > From: NANOG [mailto:[email protected]] On Behalf Of Jay Hennigan > Sent: Monday, June 09, 2014 3:10 PM > To: [email protected] > Subject: Re: L3/HE/Inbound Pathing Question > > On 6/9/14 9:38 AM, Dennis Burgess wrote: > > I have ran into this a few times, and have not found a solution: > > > > L3 à > > > > HEà --- blended Provider A --- > Customer > > > > Cogent -- > Customer > > > > Cogent of course is cheaper, and customer wishes to use the blended > provder more as backup and/or have most of the inbound traffic coming > in the cheaper path (cogent). The issue appears to be L3 and HE > specifically (of course they make up a good chunk of inbound traffic) > always prefers their customer peers, so even if we advertise any prefix > to the blended, those companies (l3/he) always choose to come in though > the customer peer and then to my customer. > > > > Any thoughts on how to get around this, and still have some kind of > route in the blended provider for failover? Off list is fine.. > Thanks in advance. > > Advertise a community to the other providers to localpref your prefixes > down to the point of being a backup. > > 3356:70 should work for Level 3, you will need to talk to HE and/or > your blended provider for what to use (and whether they support it). > > > -- > -- > Jay Hennigan - CCIE #7880 - Network Engineering - [email protected] > Impulse Internet Service - http://www.impulse.net/ Your local > telephone and internet company - 805 884-6323 - WB6RDV
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