Question : need help with configuration for Nexus 5020 + 2148 FEX

Hello - i am undertaking the following task:
Visio attached to the question.

SERVER_A (NIC teaming)===>2148-X and 2148-Y.. VPC config
2148-X====>5020-A
2148-Y====>5020-B
5020-A to 5020-B does not have VPC... i understand cisco does not yet support this topology.

i have done alot of reading, but cannot totally understand/write templates for the configuration of this specific scenario.

Do i need to configure VPC peer links - since my customer would like to configure portchannels between the 5020's and their 4900M peers upstream.

also they need to have some load balancing applied at the 4900 switches too.. would i use HSRP?

can someone help me with getting the configuration going PLEASE?

Attachments:

experts.vsd (176 KB) (File Type Details) 

visio of topology

Answer : need help with configuration for Nexus 5020 + 2148 FEX

GLBP (Gateway Load Balancing Protocol) is your best solution for load balancing traffic.  

http://www.cisco.com/en/US/docs/ios/ipapp/configuration/guide/ipapp_glbp.html

HSRP does not load balance between devices, but rather provides a stand-by device.  In the event your active device fails, the stand-by device will resume the active role and begin processing traffic.  This option is less desirable because there will be a brief period of service degradation before your stand-by device becomes active.  

In order for your "Rack8" switches to function correctly (based on the diagram they are two physically separate switches), you will not be able to NIC team the server.  Unless you are able to apply two different IP addresses to each NIC, your switches must logically function as one.  If you configure your server to use a single ip and plug it in to two logically different devices, the IP address will fall outside the IP network of one device.