AW: L2VPN/L2transport, Cumulus Linux & hardware suggestion

Tue Jul 7 22:05:03 UTC 2020

Dear Adam,

yeah, forget about LACP - the bigger problem is all the LLDP and STP stuff,
that gets interpreted at the UNI port. LACP is a bad example - but there are
many other frames and protocols, which must work. Could be that a customer
wants to run MPLS+LDP on his VLL (for whatever reason ...).

> For your requirements, although I hesitate to recommend them for
enterprise/carrier use, Miktotik's EoIP protocol does a much better job of
this than most "carrier-grade" implementations.

Not at wirespeed ... and not without causing other issues (single thread
load, etc).

> Juniper has the EX4650 that matches your h/w specs,...  Not 100% sure the
Juniper EX does 25G, now that I think of it.

Yeah, EX4650 it does: 48x 1/10/25G + 6x 100G + MPLS 
It also supports Ethernet over MPLS (at least they say here:
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/mpls-over
view.html#id-mpls-feature-support-on-qfx-series-and-ex4600-switches) but at
some of their sites they mention, that MPLS-based CCC are not support: 
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/mpls-over
view.html#jd0e2531

" ... MPLS-based circuit cross-connects (CCC) are not supported—only
circuit-based pseudowires are supported. ..."

There is also the QFX5120-48Y - 48x 1/10/25G + 8x 100G + MPLS
In the past QFX wasn't the best idea for MPLS topics ... has this changed?

> and Arista has, oh, at least half a dozen boxes of various spec that
comply, too.

Yeah, I already know them (do have some older 7050S). The call it "VXLAN P2P
Pseudowire", but there is absolutely nothing in there CLI documentation :(.
Looks like the feature is only support on the 7280 platform.

Possible options: 
7280SR2-48YC6

Do you have any experience with what they call "VXLAN P2P Pseudowire"? I
can't even find a config example on the net :(

thanks & best regards
Jürgen

-----Ursprüngliche Nachricht-----
Von: Adam Thompson [mailto:athompson at merlin.mb.ca] 
Gesendet: Dienstag, 7. Juli 2020 23:09
An: Jürgen Jaritsch <juergen at jaritsch.at>; nanog at nanog.org
Betreff: RE: L2VPN/L2transport, Cumulus Linux & hardware suggestion

Good luck with tunnelling LACP, no matter what boxes you have - LACP has (de
facto) hard jitter requirements of under 1msec, or you'll be getting TCP
resets coming out your ears due to mis-ordered packets.

For your requirements, although I hesitate to recommend them for
enterprise/carrier use, Miktotik's EoIP protocol does a much better job of
this than most "carrier-grade" implementations.

Otherwise, Juniper and Arista both come to mind, Juniper has the EX4650 that
matches your h/w specs, and Arista has, oh, at least half a dozen boxes of
various spec that comply, too.  Not 100% sure the Juniper EX does 25G, now
that I think of it.

Adam Thompson
Consultant, Infrastructure Services
MERLIN
100 - 135 Innovation Drive
Winnipeg, MB, R3T 6A8
(204) 977-6824 or 1-800-430-6404 (MB only) mailto:athompson at merlin.mb.ca
http://www.merlin.mb.ca

> -----Original Message-----
> From: NANOG <mailto:nanog-bounces+athompson=merlin.mb.ca at nanog.org> On
Behalf 
> Of Jürgen Jaritsch
> Sent: Tuesday, July 7, 2020 3:15 PM
> To: mailto:nanog at nanog.org
> Subject: L2VPN/L2transport, Cumulus Linux & hardware suggestion
> 
> Dear folks,
> 
> have anyone already tried to run VXLAN/EVPN + “Bridge Layer 2 Protocol 
> Tunneling” on Cumulus Linux as an replacement for classic MPLS 
> L2VPN/VPWS (“xconnect”, l2circuit, VLL) ?
> 
> I need to provide transparent Ethernet P2P virtual leased lines to my 
> customers and these have to support stuff like LLDP, STP, LACP, etc. 
> The transport L2 network is not THAT big: max hops between VTEP is 4.
> 
> Anyone have suggestions for the below hardware request?
> #) 1-3U L2/L3 box
> #) 48x SFP28 / 1/10/25G
> #) 6x QSFP28 / 100G
> #) VXLAN/EVPN with L2 tunneling support or
> #) MPLS VPWS/l2circuit
> #) Dual PSU
> 
> 
> thanks & best regards
> Jürgen
> 