Hi guys, I have a customer who peers via eBGP with Lightpath aka Cablevision (AS 6128) and Level3 (AS 3356) and wants to do some dual-WAN router redundancy. I have heard that carriers will sometimes agree to set up a /29 WAN subnet for a customer and peer with (2) customer routers. The customer is delaying on providing me with the proper circuit ID & contact information to be able to call Lightpath and Level3 directly and find out if they will do this, so I thought of asking this list. Is anyone aware if Lightpath and Level3 will agree to something like this? Thanks, Adam
The gotcha with that is then you need a switch in front of the routers. I'd just setup a carrier on each router and run ibgp between. Sent from my iPhone On Aug 16, 2013, at 3:35 PM, "Adam Greene" <maillist@webjogger.net> wrote:
Hi guys,
I have a customer who peers via eBGP with Lightpath aka Cablevision (AS 6128) and Level3 (AS 3356) and wants to do some dual-WAN router redundancy.
I have heard that carriers will sometimes agree to set up a /29 WAN subnet for a customer and peer with (2) customer routers.
The customer is delaying on providing me with the proper circuit ID & contact information to be able to call Lightpath and Level3 directly and find out if they will do this, so I thought of asking this list.
Is anyone aware if Lightpath and Level3 will agree to something like this?
Thanks,
Adam
Time Warner installed a Juniper EX4200 as the CPE device for us, so we connected 2 routers and had two separate BGP sessions. They have us a /29 to accomplish it. -Randy On Aug 16, 2013, at 16:53, Justin Vocke <justin.vocke@gmail.com> wrote:
The gotcha with that is then you need a switch in front of the routers. I'd just setup a carrier on each router and run ibgp between.
Sent from my iPhone
On Aug 16, 2013, at 3:35 PM, "Adam Greene" <maillist@webjogger.net> wrote:
Hi guys,
I have a customer who peers via eBGP with Lightpath aka Cablevision (AS 6128) and Level3 (AS 3356) and wants to do some dual-WAN router redundancy.
I have heard that carriers will sometimes agree to set up a /29 WAN subnet for a customer and peer with (2) customer routers.
The customer is delaying on providing me with the proper circuit ID & contact information to be able to call Lightpath and Level3 directly and find out if they will do this, so I thought of asking this list.
Is anyone aware if Lightpath and Level3 will agree to something like this?
Thanks,
Adam
Thanks, Justin. Yes, we considered that option, too. But then if one WAN router goes down, the customer will only have connectivity through a single upstream provider. We'd prefer to maintain connectivity to both even if a router fails. Switches in front of the routers is no problem. -----Original Message----- From: Justin Vocke [mailto:justin.vocke@gmail.com] Sent: Friday, August 16, 2013 4:47 PM To: Adam Greene Cc: <nanog@nanog.org> Subject: Re: will ISP peer with 2 local WAN routers? The gotcha with that is then you need a switch in front of the routers. I'd just setup a carrier on each router and run ibgp between. Sent from my iPhone On Aug 16, 2013, at 3:35 PM, "Adam Greene" <maillist@webjogger.net> wrote:
Hi guys,
I have a customer who peers via eBGP with Lightpath aka Cablevision (AS 6128) and Level3 (AS 3356) and wants to do some dual-WAN router redundancy.
I have heard that carriers will sometimes agree to set up a /29 WAN subnet for a customer and peer with (2) customer routers.
The customer is delaying on providing me with the proper circuit ID & contact information to be able to call Lightpath and Level3 directly and find out if they will do this, so I thought of asking this list.
Is anyone aware if Lightpath and Level3 will agree to something like this?
Thanks,
Adam
But the switches themselves are a single point of failure, so if a switch dies you still only have a single provider (assuming one switch per provider). ;) All you're doing is moving the your single point of failure from the routers to the switches, with arguably very little increase in actual reliability (if any, depending on whether you think switches are less likely to fail than routers). - Pete On 08/16/2013 05:21 PM, Adam Greene wrote:
Thanks, Justin. Yes, we considered that option, too. But then if one WAN router goes down, the customer will only have connectivity through a single upstream provider. We'd prefer to maintain connectivity to both even if a router fails. Switches in front of the routers is no problem.
-----Original Message----- From: Justin Vocke [mailto:justin.vocke@gmail.com] Sent: Friday, August 16, 2013 4:47 PM To: Adam Greene Cc: <nanog@nanog.org> Subject: Re: will ISP peer with 2 local WAN routers?
The gotcha with that is then you need a switch in front of the routers. I'd just setup a carrier on each router and run ibgp between.
Sent from my iPhone
On Aug 16, 2013, at 3:35 PM, "Adam Greene" <maillist@webjogger.net> wrote:
Hi guys,
I have a customer who peers via eBGP with Lightpath aka Cablevision (AS 6128) and Level3 (AS 3356) and wants to do some dual-WAN router redundancy.
I have heard that carriers will sometimes agree to set up a /29 WAN subnet for a customer and peer with (2) customer routers.
The customer is delaying on providing me with the proper circuit ID & contact information to be able to call Lightpath and Level3 directly and find out if they will do this, so I thought of asking this list.
Is anyone aware if Lightpath and Level3 will agree to something like this?
Thanks,
Adam
Thanks, Justin. Yes, we considered that option, too. But then if one WAN router goes down, the customer will only have connectivity through a single upstream provider. We'd prefer to maintain connectivity to both even if a router fails. Switches in front of the routers is no
Pete, Good point, thanks. Yes, in this case, there is some cause to believe that the switches will prove more reliable than the routers. They're older 7200VXR's and have had some lockups in the past, possibly due to PA card / IOS incompatibilities. But you're right, we are also considering accepting full or partial routes from both providers, one provider per router, and then doing iBGP between them to balance the load. We're thinking of deploying default routes and HSRP to stacked 3750's for round-robin load balancing on the LAN side. Thanks for the help! Adam -----Original Message----- From: Peter Kristolaitis [mailto:alter3d@alter3d.ca] Sent: Friday, August 16, 2013 5:30 PM To: nanog@nanog.org Subject: Re: will ISP peer with 2 local WAN routers? But the switches themselves are a single point of failure, so if a switch dies you still only have a single provider (assuming one switch per provider). ;) All you're doing is moving the your single point of failure from the routers to the switches, with arguably very little increase in actual reliability (if any, depending on whether you think switches are less likely to fail than routers). - Pete On 08/16/2013 05:21 PM, Adam Greene wrote: problem.
-----Original Message----- From: Justin Vocke [mailto:justin.vocke@gmail.com] Sent: Friday, August 16, 2013 4:47 PM To: Adam Greene Cc: <nanog@nanog.org> Subject: Re: will ISP peer with 2 local WAN routers?
The gotcha with that is then you need a switch in front of the routers. I'd just setup a carrier on each router and run ibgp between.
Sent from my iPhone
On Aug 16, 2013, at 3:35 PM, "Adam Greene" <maillist@webjogger.net> wrote:
Hi guys,
I have a customer who peers via eBGP with Lightpath aka Cablevision (AS 6128) and Level3 (AS 3356) and wants to do some dual-WAN router redundancy.
I have heard that carriers will sometimes agree to set up a /29 WAN subnet for a customer and peer with (2) customer routers.
The customer is delaying on providing me with the proper circuit ID & contact information to be able to call Lightpath and Level3 directly and find out if they will do this, so I thought of asking this list.
Is anyone aware if Lightpath and Level3 will agree to something like
this?
Thanks,
Adam
A bit late to the discussion, but we use a stack of EX switches which terminate L2 connections from the providers and two routers which have BGP sessions with them. Each switch has ports provisioned so that in case one switch fails, we just simply move the ethernet cable to the working switch and everything is fine. Eugeniu On Sat, Aug 17, 2013 at 12:47 AM, Adam Greene <maillist@webjogger.net>wrote:
Pete,
Good point, thanks. Yes, in this case, there is some cause to believe that the switches will prove more reliable than the routers. They're older 7200VXR's and have had some lockups in the past, possibly due to PA card / IOS incompatibilities.
But you're right, we are also considering accepting full or partial routes from both providers, one provider per router, and then doing iBGP between them to balance the load. We're thinking of deploying default routes and HSRP to stacked 3750's for round-robin load balancing on the LAN side.
Thanks for the help!
Adam
-----Original Message----- From: Peter Kristolaitis [mailto:alter3d@alter3d.ca] Sent: Friday, August 16, 2013 5:30 PM To: nanog@nanog.org Subject: Re: will ISP peer with 2 local WAN routers?
But the switches themselves are a single point of failure, so if a switch dies you still only have a single provider (assuming one switch per provider). ;)
All you're doing is moving the your single point of failure from the routers to the switches, with arguably very little increase in actual reliability (if any, depending on whether you think switches are less likely to fail than routers).
- Pete
Thanks, Justin. Yes, we considered that option, too. But then if one WAN router goes down, the customer will only have connectivity through a single upstream provider. We'd prefer to maintain connectivity to both even if a router fails. Switches in front of the routers is no
On 08/16/2013 05:21 PM, Adam Greene wrote: problem.
-----Original Message----- From: Justin Vocke [mailto:justin.vocke@gmail.com] Sent: Friday, August 16, 2013 4:47 PM To: Adam Greene Cc: <nanog@nanog.org> Subject: Re: will ISP peer with 2 local WAN routers?
The gotcha with that is then you need a switch in front of the routers. I'd just setup a carrier on each router and run ibgp between.
Sent from my iPhone
On Aug 16, 2013, at 3:35 PM, "Adam Greene" <maillist@webjogger.net>
wrote:
Hi guys,
I have a customer who peers via eBGP with Lightpath aka Cablevision (AS 6128) and Level3 (AS 3356) and wants to do some dual-WAN router redundancy.
I have heard that carriers will sometimes agree to set up a /29 WAN subnet for a customer and peer with (2) customer routers.
The customer is delaying on providing me with the proper circuit ID & contact information to be able to call Lightpath and Level3 directly and find out if they will do this, so I thought of asking this list.
Is anyone aware if Lightpath and Level3 will agree to something like
this?
Thanks,
Adam
Adam Greene wrote:
Hi guys,
I have a customer who peers via eBGP with Lightpath aka Cablevision (AS 6128) and Level3 (AS 3356) and wants to do some dual-WAN router redundancy.
I am not optimistic for your odds in having 6128 do anything other than /30 for you. (Though even then you still have options, up to and including eem IP takeover)
I have heard that carriers will sometimes agree to set up a /29 WAN subnet for a customer and peer with (2) customer routers.
Carriers who do that and more are my favorites.
Offer to provide a /29 out of your own arin assigned block works wonders Sent from my iPhone On 2013-08-29, at 7:40 PM, "Joe Maimon" <jmaimon@ttec.com> wrote:
Adam Greene wrote:
Hi guys,
I have a customer who peers via eBGP with Lightpath aka Cablevision (AS 6128) and Level3 (AS 3356) and wants to do some dual-WAN router redundancy.
I am not optimistic for your odds in having 6128 do anything other than /30 for you.
(Though even then you still have options, up to and including eem IP takeover)
I have heard that carriers will sometimes agree to set up a /29 WAN subnet for a customer and peer with (2) customer routers.
Carriers who do that and more are my favorites.
participants (7)
-
Adam Greene -
Eugeniu Patrascu -
Joe Maimon -
Justin Vocke -
Mark Gauvin -
Peter Kristolaitis -
Randy Carpenter