Load Sharing VPLS end

[Julian_Eble]

Hello Community,

I'm having headache about the load-balance on Aggreation Ports.

Our scenery is a MPLS network who the end point are connected by Juniper Routers.
These connections are 10G (20g agg) and have one VLAN VPLS tagged end-by-end.
The traffic doesn't get balanced even when I change the hash-algorithm and the balance type.

Is there any problem using VPLS and LACP?
Extreme introduced the load-sharing VPLS but I think that useful just for the trunk LACP/MPLS, isn't?

Thanks,
Julian Eble

[Anatoly_Machekh]

Hi welisson,

Yes, I think you mean "l2vpn sharing" feature, and it is enabled on our Extreme switches. And yes, traffic is balanced between LSP from one switch to the other:

Transport LSP : LSP_E1_E2_1 (Configured)
Next Hop I/F : VLAN12
Next Hop Addr : 172.22.127.10 Tx Label : 0x0043b
Tx Pkts : 1213508852 Tx Bytes : 3128993213097
Transport LSP : LSP_E1_E2_2 (Configured)
Next Hop I/F : VLAN12
Next Hop Addr : 172.22.127.10 Tx Label : 0x0043d
Tx Pkts : 598239828 Tx Bytes : 3528005632087
Transport LSP : LSP_E1_E2_3 (Configured)
Next Hop I/F : VLAN12
Next Hop Addr : 172.22.127.10 Tx Label : 0x0043f
Tx Pkts : 401710508 Tx Bytes : 3236292622542
Transport LSP : LSP_E1_E2_4 (Configured)
Next Hop I/F : VLAN12
Next Hop Addr : 172.22.127.10 Tx Label : 0x00441
Tx Pkts : 1034383499 Tx Bytes : 3032407107905
But when switch send traffic to Juniper it puts all traffic in one port in LAG (sharing group) and that is the problem GTAC could not help us with.

[welisson]

Hi Anatoly,

I known that x670 family has a feature to enable mpls lsp load-sharing or some thing like that, and using this feature it will do this load balancing in the packets lsp.

it has been provided from x460-G2.[¹]

[¹] https://gtacknowledge.extremenetworks.com/articles/Solution/Unable-to-configure-L2VPN-sharing-with-M...

have you already tried it?

[Anatoly_Machekh]

Hi All!

At last we got our customers to approve downtime. I configured sharing crc32 (first upper, half an hour later - lower), but result is negative. IP traffic is balancing OK, but L3VPN MPLS - absolutely not.
Anybody has any ideas?

[Anatoly_Machekh]

Hi Henrique,
Thank you for answer.
We have 2 X670-G2 switches running VPLS between Junipers. On one we have address-based xor balancing, on the other - port-based. Later today I will change address-based balancing to crc32 (will try upper and lower).

[Henrique]

Hi Anatoly, I would suggest you to try using address-based custom algorithm and change the hashing from xor to crc-32 upper or lower.

To try with upper:

configure sharing address-based custom hash-algorithm crc-32 upper

To try with lower:

configure sharing address-based custom hash-algorithm crc-32 lower

Do you have just 1 X670G2 between the Juniper's devices?

If you have 2 X670G2's directly connected, change the hashing for just 1 switch and keep the other with address-based custom algorithm and default hashing (xor).