Does Juniper set a control word on VPLS pseudowires

Question

At the RIPE conference the was a talk about how MAC addresses starting with a 4or 6 may suffer from decreased performance because MPLS routers misinterpret the Ethernet packets as an IPv4/6 packet when load balancing over multiple links.

Presentation is here

One workaround would be to insert additional fields to prevent misinterpretation of the packets. Control words do the trick. Now, I know that control words are enabled on l2vpn connections on juniper by default, but I can't find any information regarding VPLS.

Does anyone know if control words are sent when using VPLS on juniper by default or if we can enable them?

score 6 · Answer 1 · edited May 15 '13 at 14:02

6

I don't know for sure, but

set routing-instances red instance-type vpls protocols vpls control-word

commits for me on 12.3R2.5

and this is mentioned here:

On MX Series routers with the Channelized OC3/STM1 (Multi-Rate) Circuit Emulation MIC with SFP, Junos OS substantially supports RFC 4385, Pseudowire Emulation Edge-to-Edge (PWE3) Control Word for Use over an MPLS PSN

edited May 15 '13 at 14:02

Craig Constantine

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answered May 15 '13 at 12:19

yeled

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score 5 · Accepted Answer · edited Jul 24 '14 at 15:31

5

negotiation of the control-word between the BGP VPLS PE routers is added in Juniper MX series starting from Junos 14.1. so only BGP-signaled VPLS.

BR

edited Jul 24 '14 at 15:31

Sebastian Wiesinger

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answered Jul 24 '14 at 03:16

Abubaker Fageary

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Does Juniper set a control word on VPLS pseudowires

2 Answers2