[dev] BGP Views

[Richard Mayhew [directel]]

Hi Renato,

I am sure that if there is a way to run the process without it exposing the routes to the local operating system it would work just fine. Admittedly I am not an expert in FRR, but wouldn't a VRF be the seen the same as a VIEW (Separate routing table)? I currently only run 2 views, 1 IPv4 and 1 IPv6 so it wouldn’t be a big deal if one had to run 2 separate bgpd's, maybe this would even work better in terms of multi-threading?

Kind Regards
Richard


-----Original Message-----
From: Renato Westphal [mailto:renato at opensourcerouting.org]
Sent: Thursday, 06 September 2018 20:45
To: Richard Mayhew [directel] <richard at directel.co.za>
Cc: FRRouting-Dev <dev at lists.frrouting.org>; Donald Sharp <sharpd at cumulusnetworks.com>
Subject: Re: [dev] BGP Views

Hi Richard,

As discussed in issue #2900 [1], the same functionality of BGP views
can be achieved by running a separate bgpd instance with --pathspace
and --no_kernel. With this approach it should even be possible to run
BGP views within VRFs. Do you think that would work for you? The only
downside I see is the extra management overhead to deal with multiple
instances (additional directories and configuration file, separate
vtysh session to access the second bgpd instance, etc). Nothing that
should be a big problem from my perspective.

Cheers,
Renato.

[1] https://github.com/FRRouting/frr/issues/2900

On Tue, Sep 4, 2018 at 2:18 PM, Richard Mayhew [directel]
<richard at directel.co.za> wrote:
> Hello,
>
> We make use of views so that the underlying operating system is not aware of
> any routes held by the frr bgp process. We use FRR as our core network route
> servers  between a number of core nodes to allow them to exchange routes
> between them (filters...etc.)
>
> I think having the views feature is an advantage to FRR when running as a
> route server since the underlining OS has no need to know or make use of the
> routes held in the routing table.
>
> --
> Kind Regards
>
> Richard Mayhew
>
> ________________________________
> From: dev <dev-bounces at lists.frrouting.org> on behalf of Donald Sharp
> <sharpd at cumulusnetworks.com>
> Sent: Tuesday, September 4, 2018 6:23:12 PM
> To: FRRouting-Dev
> Subject: [dev] BGP Views
>
> In today's technical meeting we discussed removing the ability to have
> views as an option in bgp.  Before we do any such thing we decided to
> poll the community to see if anyone is using views and if so what is
> the use case that they are using them under.  So if you have any
> insight into this we would love to hear from you!
>
> Thanks!
>
> donald
>
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--
Renato Westphal
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