Re: Need help with Time Warner announcing my new /24 on their network

[Dave Bell]

> On Thu, Oct 8, 2015 at 10:35 AM, Martin Moreno  
> wrote:
>> Since we are not multi homed nor have our own AS TW did a static route from
>> their gateway router /IP to our router

On 8 October 2015 at 17:09, William Herrin  wrote:
> router bgp YOURAS#
>   neighbor TWIP next-hop-self
>
> This tell your router to advertise your IP addresses with your
> router's address as the next hop.

>From what he has written, he is not doing BGP with his upstream. In
this case what is he supposed to be doing next hop self on?

Sounds like TW have messed something up, and are not redistributing your prefix.

Regards,
Dave

Re: Need help with Time Warner announcing my new /24 on their network

[Bartek Krawczyk]

Besides, swapping next hop is default in eBGP sessions.
Next-hop-self is only needed for iBGP.

On 8 October 2015 at 18:16, Dave Bell  wrote:
>> On Thu, Oct 8, 2015 at 10:35 AM, Martin Moreno  
>> wrote:
>>> Since we are not multi homed nor have our own AS TW did a static route from
>>> their gateway router /IP to our router
>
> On 8 October 2015 at 17:09, William Herrin  wrote:
>> router bgp YOURAS#
>>   neighbor TWIP next-hop-self
>>
>> This tell your router to advertise your IP addresses with your
>> router's address as the next hop.
>
> From what he has written, he is not doing BGP with his upstream. In
> this case what is he supposed to be doing next hop self on?
>
> Sounds like TW have messed something up, and are not redistributing your 
> prefix.
>
> Regards,
> Dave



-- 
Bartek Krawczyk

Re: Need help with Time Warner announcing my new /24 on their network

[William Herrin]

On Thu, Oct 8, 2015 at 10:35 AM, Martin Moreno  wrote:
> Since we are not multi homed nor have our own AS TW did a static route from
> their gateway router /IP to our router but they are saying we need to do a
> next hop statement and to point the new /24 back to their gateway ip?

router bgp YOURAS#
  neighbor TWIP next-hop-self

This tell your router to advertise your IP addresses with your
router's address as the next hop. BGP does not do this automatically
because in more complicated configurations it's often not the desired
result.

Regards,
Bill Herrin




-- 
William Herrin  her...@dirtside.com  b...@herrin.us
Owner, Dirtside Systems . Web: