Multiple vlan issue

In  our network we are using an EX4500 for BGP and it is connected to EX4200 edge switches like that

scr

And we have a systematic for vlans for ex. if the switch connected 4th port on EX 4500 and Ex 4200's 22.port' vlan number is 422

But we have a problem at the moment one of our customers is using vlan 422, 625,710 vlans and wanted to use the ip addresses on 3 machine. In this scenerio we have 2 option

1. changing vlan topology
2. asking experts exchange to if there is a way what if there is a way to share connection in this 3 vlans :)
FireBallITAsked:
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Don JohnstonInstructorCommented:
Q-in-Q tunneling or VXLAN.  But it doesn't appear that VXLAN is supported on EX series.
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FireBallITAuthor Commented:
what is the purposes of Q in Q tunnel
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Don JohnstonInstructorCommented:
what is the purposes of Q in Q tunnel
It allows you to double tag a frame.  This is often used by service providers which use 802.1q tagging to segregate their customers. If those customers are also tagging the frames, Q-in-Q tunneling is used so the provider can tag the frame which the customer has already tagged.
Understanding Q-in-Q tunneling.
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FireBallITAuthor Commented:
Thank you
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Zephyr ICTCloud ArchitectCommented:
Maybe VLAN swapping is an option, it's available in Juniper switches with a recent JunOS
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