03-14-2013 08:10 AM - edited 03-03-2019 07:00 AM
Dears,
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.
BR,
ABDUL MAJID KHAN
03-18-2013 10:34 PM
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
03-19-2013 10:55 AM
Hi Abdul,
Best pratice is to set the boundary between the Layer 2 and Layer3.
Some of the best practices guide,
http://www.cisco.com/en/US/docs/solutions/Enterprise/Data_Center/nx_7000_dc.htm
As discussed on call, Please understand you business needs and contact our design team to proceed further.
Richard
10-21-2015 08:41 AM
What did you end up doing and how did it work out?
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