MPLS FAT Label

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Hello,

By reading this article http://packetpushers.net/fat-or-entropy-label/ I`ve been wondering if Extreme could implement something like that (FAT Label)?

Some l2vpn circuit are getting 10Gbps and the outer interfaces port channels aren`t handling it well.

Thanks :)
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Julian Eble

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Posted 2 years ago

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Erik Auerswald, Embassador

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Hi Julian,

have looked at the GTAC Knowledge article Incorrect load sharing on MPLS P-node?

Erik
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Henrique, Employee

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(Edited)
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Julian Eble

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So, we`ve tried everything is possible to solve that, but none solved.
As the sharing only see one label carrying that huge traffic, it cannot load-balacing between the aggregates ports.
I think the only way to do that is by adding this on the mpls header (Entropy/Fat label).
https://tools.ietf.org/html/rfc6790
(Edited)
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Korsovsky, Konstantin, Employee

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Hi Julian,
 did you try to use "l2vpn sharing" feature?
Please check examples from discussion on a link below. It might help you to solve the problem.
https://community.extremenetworks.com/extreme/topics/load-balance-problem-using-vpls-as-transport

Keep in mind that that feature has some limitations:
https://gtacknowledge.extremenetworks.com/articles/Q_A/What-are-limitations-for-Pseudowire-Label-Swi...
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Julian Eble

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Hello Konstantin,

It`s odd because I did the same thing in my lab and couldn`t get the same result. What version did you use in that test enviroment?
Another thing, is that I`m waiting for xos0066476 to be solved, isn`t save to use rsvp in the current working network.
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Korsovsky, Konstantin, Employee

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When I started to test it I also failed and then I figured out that LSP sharing doesn't work with unknown unicast traffic:
https://gtacknowledge.extremenetworks.com/articles/Solution/Pseudowire-Label-Switch-Path-Load-Sharin...

So make sure that traffic which you trying to load-balance is bidirectional.
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Julian Eble

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Most of our traffic is one source/dest mac but has multiples source/dest IP unicast
some of these vpls has 15Gb.
Is there any problem of what kind of unicast traffic is? even if it`s just one mac and lsp will do the balancing?
I`ll give a new try to that in my lab..
(Edited)
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Henrique, Employee

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Could you please share your network diagram and point where the balancing is not working as expected?

This will help us to have a better insight.

Thanks.
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Julian Eble

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Henrique,

The backbone isn`t load balancing.
 
A ticket was answered by you informing that behaviour(Unifique).
 

Houve a resposta informando a impossibilidade e referente ao uso de dois labels.
Queria apenas discutir a possibilidade e se isso poderia ser feito da parte de entropia e adição de label para o hash.
(Edited)
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Henrique, Employee

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Hi Julian, I'm not sure if there is a roadmap to have "The Use of Entropy Labels in MPLS Forwarding" implemented.

I will check internally and let you know.
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Henrique, Employee

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Hi Julian, currently there is no roadmap to have that feature implemented. I will let you know fi anything changes during the next months.
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welisson

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Hi Henrique.

Can you let me know whether would it be possible to do using x460(not x460-g2)? 
I have a core with more than 4 of them, and I couldn't do that, I've been lost in find out some solution for my Extreme Network, otherwise I would have to replace those one. 

tks