[180055] in North American Network Operators' Group
Re: Low Cost 10G Router
daemon@ATHENA.MIT.EDU (Thomas Mangin)
Wed May 20 12:49:34 2015
X-Original-To: nanog@nanog.org
From: "Thomas Mangin" <thomas.mangin@exa-networks.co.uk>
To: nanog-bounces@nanog.org
Date: Wed, 20 May 2015 17:47:12 +0100
In-Reply-To: <CALgsdbeVZG+psGFM+2RtAXOYFK33f9OVxr=iaRu2k=gX9Jro1w@mail.gmail.com>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
Hello Pavel,
Using ExaBGP as an SDN already has been done (and in a very large =
scale). But I would agree with Nick; It is not something I would =
recommend to everyone.
Once more to echo Nick, to add/remove route/fw entries on Linux please =
do use netlink. The lastest ExaBGP master has some start of code to =
implement NetLink in python but I recently found a python module for it: =
https://github.com/svinota/pyroute2
Before ExaBGP can become a route server, I must complete a number of =
pieces (like the CLI which I am currently coding).
I have spoken with the IX community about making ExaBGP a RR/RS and the =
idea was not badly received, but no one offered to help so it is on the =
back burner.
Thomas
On 20 May 2015, at 15:54, Pavel Odintsov wrote:
> Hello!
>
> Yes, we could run route add / route del when we got any announce from
> external world with ExaBGP directly. I have implemented custom custom
> Firewall (netmap-ipfw) management tool which implement in similar
> manner. But I'm working with BGP flow spec. It's so complex, standard
> BGP is much times simpler.
>
> And I could share my ExaBGP configuration and hook scripts.
>
> ExaBGP config: =
> https://github.com/FastVPSEestiOu/fastnetmon/blob/master/src/scripts/ex=
abgp_firewall.conf
>
> Hook script which put all announces to Redis Queue:
> https://github.com/FastVPSEestiOu/fastnetmon/blob/master/src/scripts/ex=
abgp_queue_writer.py
>
> But full BGP route table is enough big and need external processing.
>
> But yes, with some Python code is possible to implement route server
> with ExaBGP.
>
> On Wed, May 20, 2015 at 5:25 PM, Aled Morris <aledm@qix.co.uk> wrote:
>> On 20 May 2015 at 15:00, Pavel Odintsov <pavel.odintsov@gmail.com> =
>> wrote:
>>>
>>> Yes, you could do filtering with Quagga. But Quagga is pretty old =
>>> tool
>>> without multiple dynamic features. But with ExaBGP you could do =
>>> really
>>> any significant route table transformations with Python in few lines
>>> of code. But it's definitely add additional point of failure/bug.
>>
>>
>> Couldn't your back-end scripts running under ExaBGP also manage the =
>> FIB,
>> using standard Unix tools/APIs?
>>
>> Managing the FIB is basically just "route add" and "route delete" =
>> right?
>>
>> Aled
>>
>
>
>
> -- =
> Sincerely yours, Pavel Odintsov
