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Dear Experts:

We are interested in for MPLS VPN of HUB and Spoke with L3, with this all the locations are terminated to the central hub location (all the spokes can communicate to the  HUB location) this is to acheive single sign in for all the services or applications running on HUB.
As of now without the MPLS VPN in the hub location, only with the internet leased line the network design is VM ware EXSI host with VM's in that one VM is with guest UBUNTU LINUX SERVER functioning as DDNS , static zones for servers and workstations and dhcp for mobile users(laptop users)
my network is 192.168.1.0
Now if we go for the MPLS VPN each location will be like below subnet:
192.168.2.0   sopke1
192.168.3.0   spoke2
192.168.4.0   spoke3
192.168.5.0   spoke4
can I acheive the same way  for all the spokes like how I have now in the hub location i,e mobile users (laptops users of spoke locations are assigined ip from the hub location VM guest same ubuntu ddns server)
like configure more nic's on the ubuntu ddns server and assign each nic for each spoke for example assign eth4 to 192.168.2.10. for this spoke1 is terminated and similaraly another nic eth5 with 192.168.3.10 on the ubuntu ddns server and terminate the spoke 2 for this.
Please help me in this.





asked 11/29/2011 11:27

D_wathi's gravatar image

D_wathi ♦♦


7 Answers:
I suggest setting up a DHCP server in each location along with a slave DNS server.  If your routing is setup properly you can just configure those new DHCP servers to update the master DNS server for their dynamic updates.
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answered

Papertrip's gravatar image

Papertrip

Sir, thanks for the reply.

Is it like setting up dhcp slave on each spoke for the master server of DDNS on hub location. As each spoke has different subnet 192.168.2.0 , and spoke 2 with 192.168.3.0 and so on.  can i acheive dhcp master and slave across all the spoke locations for having different subnet. Please suggest.
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answered 2011-11-30 at 10:00:31

D_wathi's gravatar image

D_wathi

Is it like setting up dhcp slave on each spoke for the master server of DDNS on hub location.

Not a DHCP slave, but rather a DNS slave.  You want the DHCP servers in the spokes to be authoritative for their networks.

For the DHCP servers in the spokes to dynamically update the master DNS server at the hub, it is not required to setup interfaces on the master for each spoke subnet.

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answered 2011-11-30 at 23:36:42

Papertrip's gravatar image

Papertrip

Sir, thanks for the reply.

In the HUB having DDNS (dns and dhcp),the recommended practice is setup the dns slave on each spoke location, in that case how the moible (laptops users ) get the ip address. Sir is it something ddns slave to be configured on all the spoke locations, please suggest.
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answered 2011-11-30 at 23:40:08

D_wathi's gravatar image

D_wathi

Setup a slave DNS server at each hub, along with a DHCP server for that subnet that dynamically updates the master DNS server.
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answered 2011-12-02 at 07:20:25

Papertrip's gravatar image

Papertrip

Sir, thanks for the reply will do it accordingly but in few spoke location we have only 05 -08 systems in these spokes dedicating the server for dns and dhcp will have issuses in our management for the investment can we do something here. Please help.
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answered 2011-12-02 at 19:17:37

D_wathi's gravatar image

D_wathi

Hey D,

Sorry for the delay.

The physical requirements for a DNS/DHCP server are not demanding, especially for a small local network, and can most definitely be done on a single server.  Does you budget allow you to spend a few hundred additional dollars on critical infrastructure for each location?  This truly is critical infrastructure -- I unfortunately know how difficult it can be to sell this idea to management, but honestly if they can't deal with that fact then you have a headache-filled future to look forward to.
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answered 2011-12-02 at 21:47:44

Papertrip's gravatar image

Papertrip

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Asked: 11/29/2011 11:27

Seen: 302 times

Last updated: 12/14/2011 12:21