The user can get ip address through E-line?

Here is topology:  user1 and vlan10 ------ Switch1/E-line-circuit1 -----CE1-----PE1-----MPLS-----PE2-----CE2------E-line-circuit2/Switch2------vlan10/user2/ DHCP server.

Here is my question:
When user1 contacts user2, can we think the link between Switch1 and Switch2 as one ethernet cable connection? if so, user1 can get ip address from DHCP server?
Thank you
eemoonAsked:
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nociSoftware EngineerCommented:
You can make it into an "ethernet" alike cable (called a Layer 2 tunnel)... but it won't make things simpler ....
it would be easier to (and more error resistent) to have both ends have their own local DHCP server and have a routed connection..  ( and address range).
Not only DHCP would travel the cable, ALL Broadcast & Multicast will go there.
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Aaron TomoskySD-WAN SimplifiedCommented:
Yes you can, but I would hesitate to have that much gear between users and dhcp.
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Ken BooneNetwork ConsultantCommented:
Yes no problem.  That is a normal setup.  You simply view that as your two switches connected via an ethernet cable.  The gear you have in between the setup is normal as well for E-Line service.  No worries there.
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masnrockCommented:
Yes, BUT I wouldn't recommend it either. I would sooner recommend having a different subnet at the second site, and having a local DHCP server. That way, users can get to at least local resources in the case the link goes down for some reason. Plus it would drastically reduces the amount of traffic that goes between the two sites (see noci's comment).
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Ken BooneNetwork ConsultantCommented:
That really depends on what the customer is trying to accomplish.  It is a valid design but none of us know the customer requirements or skill sets or how the rest of the network is setup.  For instance is the internet path out site A?  If so, is most of their business traffic requiring internet?  If so, if they lost connection and don't have DHCP available at site B, it doesn't really matter, cause they can't reach the internet.  Same could be said if they have a file server at site A that site B needs for their business work.    Also, maybe site B only has 2 people - not much additional traffic there and not worth putting an additional server, etc...  Remember this just an E-Line not E-LAN so requirements could be much simpler.  I'm merely answering the author's question.  We can't surmise what is best without  more details from the customer.  What you guys have suggested may indeed be the best solution, but again, we can't really determine that without knowing more about the customer's environment and requirements.
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nociSoftware EngineerCommented:
Agree, if one site has many systems then the multicast traffic may easily kill a small line.
depending on capacity etc.
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eemoonAuthor Commented:
Thank you so much for your reply.
To further confirm the issue, I would like to say: since we can consider the link between Switch1 and Switch2 as ethernet cable, if user1 wants to contact user2, both users have to be at the same vlan10, right? Thank you
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Ken BooneNetwork ConsultantCommented:
That is correct.
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