[FROG] Current state of MPLS for FRR?

[Алексей Болдырев]

In the printer MPLS in Linux can be used only when the kernel 4.12 is released. There are a lot of changes in MPLS part. As for the hardware support for MPLS, everything depends on the manufacturer of the network cards. The account bgp - mpls bgp in frr is not implemented completely. There are such projects as gobgp, exabgp there seems to be support for MPLS.

18.05.2017, 14:30, "David Lamparter" <david на opensourcerouting.org>:
> Hi William,
>
> [bits inline]
>
> On Tue, May 16, 2017 at 08:14:09PM -0600, William George wrote:
>>  Looking at the docs on https://frrouting.org/ it's not *exactly* clear what
>>  the current state is. I notice in the tests for LDP, there's a number of
>>  "all-fails", but I'm not familiar enough w/ the protocol to know whether
>>  those are strictly necessary for a working implementation.
>
> It's on par with the test failures we see on well-working, reliable
> protocols. Some of the tests are simply very strict and the
> implementation may be a bit too forgiving; some are just things that
> aren't implemented -- and some are probably bugs ;).
>
> I've sucessfully run ldpd against an Extreme Networks switch, but I'm a
> developer so this isn't a deployment where I would notice hidden issues.
>
> Also note that FRR ldpd is (99%) the same as OpenBSD ldpd, which is
> pretty well-tested AFAIK.
>
>>  I was going to add that I wasn't sure if the "vpnv4" address family was
>>  supported but I found this
>>  <https://frrouting.org/user-guide/BGP-Address-Family.html#index-show-ip-bgp-vpnv4-all>.
>>  It explicitly calls out the supported RFCs, so I guess we're good there
>>  (though it should probably be noted in the "supported RFCs" page. If the
>>  contribution process is simple enough I'll probably submit a pull request).
>
> This is relatively new and if you check the issue tracker you'll see a
> few open issues on it. We'd be happy to get feedback, but keep it in a
> lab for now ;)
>
> (The "new" bits are the pieces that actually put MPLS labels into the
> RIB & FIB -- the address family support has been there for 10+ years.)
>
>>  So the BGP support seems to be there, and LDP seems "mostly" complete,
>>  whatever that means. Does that mean FRR can actually integrate with a
>>  functioning MPLS network? How "production ready" should this be considered?
>
> LDP should be production ready, the BGP pieces not quite just yet. It's
> moving pretty rapidly though!
>
>>  Similarly, though I know this isn't exactly the responsibility of FRR, can
>>  anyone give me an idea of the state of open hardware support for MPLS?
>>  From what I've seen so far, it's actually rather lacking, but I'm not
>>  confident I'm looking in the right places. Last thing I want to do is add
>>  an MPLS node that's going to punt every MPLS frame to CPU or something :)
>
> I unfortunately have no idea on this. FRR uses the system interfaces
> for MPLS on Linux and OpenBSD. You may need to buy some vendor's
> devices that come accompanied by closed-source kernel<>hw layers ;)
>
> (There's work ongoing in the Linux kernel on switch silicon drivers, but
> last I checked - half a year ago - this didn't include MPLS.)
>
> Cheers,
>
> -David
>
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