ISP inbound failover without BGP

Faisal Imtiaz faisal at snappytelecom.net
Tue Mar 4 05:09:04 UTC 2014


There are other elaborate solutions to accomplish this, however all of them would require a competent IT/Network Person to manage the network.

If we were the ISP, we would look at such a case an an opportunity, and become the managed service provider, for a fee (typically a premium), and provide the service.

As service providers, we all complain about the end-customer being a pain, but we often forget that it the the PITA end-customers that give us the ability to earn our daily bread!.... I think too many of us are overworked and providing highly under-paid services for peanuts, where we often overlook at opportunities to get premium value as a PITA, and not worth it...

:)

Just my personal two cents,.....

Faisal Imtiaz
Snappy Internet & Telecom


----- Original Message -----
> From: "Eric A Louie" <elouie at yahoo.com>
> To: "Randy Carpenter" <rcarpen at network1.net>
> Cc: "NANOG" <nanog at nanog.org>
> Sent: Monday, March 3, 2014 11:49:21 PM
> Subject: Re: ISP inbound failover without BGP
> 
> Honestly?  Because the end-customers are not technically competent enough to
> run dual-homed BGP, and we don't want to be their managed service providers
> on the IT side.  And announcing the AT&T space is fine until something goes
> wrong, and I have to troubleshoot the problem (Customer - "How come AT&T is
> down, and we're not getting inbound traffic to our servers?", and I discover
> L3 or CenturyLink isn't accepting my advertisement for some weird reason,
> but they won't fess up to it for a few frustrating hours)
> 
> 
> 
> 
> 
> >________________________________
> > From: Randy Carpenter <rcarpen at network1.net>
> >To: Eric A Louie <elouie at yahoo.com>
> >Cc: NANOG <nanog at nanog.org>
> >Sent: Monday, March 3, 2014 7:20 PM
> >Subject: Re: ISP inbound failover without BGP
> > 
> >
> >
> >Is there some technical reason that BGP is not an option? You could allow
> >them to announce their AT&T space via you as a secondary.
> >
> >-Randy
> >
> >----- Original Message -----
> >> This may sound like dumb question, but... I'm used to asking those.
> >> 
> >> Here's the scenario
> >> 
> >> Another ISP, say AT&T, is the primary ISP for a customer.
> >> 
> >> Customer has publicly accessible servers in their office, using the AT&T
> >> address space.
> >> 
> >> I am the customer's secondary ISP.
> >> 
> >> Now, if AT&T link fails, I can provide the customer outbound Internet
> >> access
> >> fairly easily.  So they can surf and get to the Internet.
> >> 
> >> What about the publicly accessible servers that have AT&T addresses,
> >> though?
> >> 
> >> One thought I had was having them use Dynamic DNS service.
> >> 
> >> Are there any other solutions, short of using BGP multihoming and having
> >> them
> >> try to get their own ASN and IPv4 /24 block?
> >> 
> >> 
> >> It looks like a few router manufacturers have devices that might work, but
> >> it
> >> looks like a short DNS TTL (or Dynamic DNS) needs to be set so when the
> >> primary ISP fails, the secondary ISP address is advertised.
> >> 
> >> 
> >
> >
> >
>



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