These archived posts discussed valuable content on the topic of vlans for multiple sites.
https://amp.reddit.com/r/networking/comments/2lrl53/vlans_for_multiple_sites/
https://amp.reddit.com/r/Cisco/comments/fwugfi/multiple_sites_vlan_numbering_best_practices
I really like the concept of the scheme 10.<site-id>.<vlan-id>.<host> and a VLAN across multiple sites. But one thing gives me problems, the assignment of IPs with DHCP.
For example, I have two sites with subnets that have DHCP clients in them. Both subnets share VLAN ID 50. 10.10.50.0/24 - Site A clients 10.10.100.0/24 - Site A server (the DHCP server 10.10.100.20 is located here) 10.11.50.0/24 - Site B clients When a client makes a DHCP request, it is broadcast across the entire VLAN (across both sites) and relayed to VLAN 100 to the server subnet.
How do I make sure that the client gets an IP from its respective subnet for it's location? How must a DHCP relay agent be configured and where is it needed?
I am very grateful for ideas and suggestions
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