This is a simple how to make a nexus switch L3 routeing and the connected access switches still on L2 switching. If you have a router connected between internet and the router switch. Make shure you have a static route configured to the two vlan network.

Router Switch

no system default interface-vlan autostate (brings up the vlan)

conf t

vlan 10  (creates vlan 10 L2)

name Servers vlan 10

exit

vlan 20 (creates vlan 20 L2)

name Servers vlan 20

exit

feature interface-vlan  (Converts L2 vlan 10 to L3 vlan 10)

interface vlan 10
ip address 1.1.1.1/24
no ip redirects

exit

feature interface-vlan  (Converts L2 vlan 20 to L3 vlan 20)
interface vlan 20
ip address 2.2.2.2/24
no ip redirects

exit

interface ethernet 1/1 (creates tagged vlan port to access sw1)
  description To Access Sw1
switchport 
switchport mode trunk
  no shutdown

exit

interface ethernet 1/2 (creates tagegd vlan port to access sw1)
  description to Access Sw2
switchport 
switchport mode trunk
no shutdown

exit

interface ethernet 1/3 (Creates the link network port)
description to Internet
no switchport
ip address 3.3.3.1/30
no shutdown

exit

ip route 0.0.0.0 0.0.0.0 3.3.3.2 (makes default router to next hop router)

copy running-config startup-config

Access Sw1

conf t

vlan 10 (creates vlan 10 L2)

name Servers vlan 10

exit

vlan 20 (creates vlan 20 L2)

name Servers vlan 20

exit

interface ethernet 1/1 (creates tagged vlan port to Router switch)
description To Router Switch
switchport 
switchport mode trunk
no shutdown

exit

interface ethernet 1/2 (creates untagged vlan 10 port to servers)
description Access vlan 10
switchport 
switchport mode access vlan 10
no shutdown

exit

interface ethernet 1/3 (creates untagged vlan 20 port to servers)
description  Access vlan 20
switchport 
switchport mode access vlan  20
no shutdown

exit

copy running-config startup-config

Access Sw2

conf t

vlan 10 (creates vlan 10 L2)

name Servers vlan 10

exit

vlan 20 (creates vlan 10 L2)

name Servers vlan 20

exit

interface ethernet 1/1 (creates tagged vlan port to Router switch)
description To Router Switch
switchport 
switchport mode trunk
no shutdown

exit

interface ethernet 1/2 (creates untagged vlan 10 port to servers)
description Access vlan 10
switchport 
switchport mode access vlan 10
no shutdown

exit

interface ethernet 1/3 (creates untagged vlan 20 port to servers)
description  Access vlan 20
switchport 
switchport mode access vlan  20
no shutdown

exit

copy running-config startup-config