I am designing the Datacenter Network using below details;
1: Nexus 7K as Core
2: Nexus 5K, N2K for Data Center Servers
3: 6513 as Core for Users Layer
4: Multiple layers of Firewalls + IPS (Internet, WAN, Data Center)
5: Data Center Firewall is Firewall on stick act as gateway for more than 20 DC Servers vlans
6: Load Balancers, Routers, etc
7: All devices uplinks are 10G
8: Redundant network with Mesh uplinks
9: Separate VTP domain for every encircle/color layer
10: Traffic Flow is between Layers and towards Internet
I have 2 design options (Diagram is attached);
1: Data Center Core as Layer 2
2: Data Center Core as Layer 3
Please share your ideas to know which design is better with pros and cons of each. Also recommend if i need to create any VDC on N7K.
ABDUL MAJID KHAN
in my experience - if you have the choice - always go with layer 3.
so many issues can arise with layer 2 and they are much harder to troubleshoot than layer 3 issues.
i dont think the extra hop is going to be that big of a deal especially if you are doing 10GB links the way through
Best pratice is to set the boundary between the Layer 2 and Layer3.
Some of the best practices guide,
As discussed on call, Please understand you business needs and contact our design team to proceed further.