Implement Cisco L3 Switch for MME,SGW,DNS (S11 Interface)

I try to complete configuration Cisco L3 Switch for S11 interface include DNS. Previous posting just for MME and SGW.

#### Parameter

L3_Switch

Ethernet0/1: MME

Ethernet0/2: SGW

Ethernet0/3: DNS

IP Address & Routing

MME 192.168.16.2/28, gateway (default route) 192.168.16.1

SGW 192.168.20.2/28, gateway (default route) 192.168.20.1

DNS 192.168.21.2/28, gateway (default route) 192.168.21.1

#### Config

L3_Switch#

ip vrf S11_VR

 rd 65000:16

interface Ethernet0/1

 description S11_MME

 ip vrf forwarding S11_VR

 ip address 192.168.16.1 255.255.255.240

 duplex auto

interface Ethernet0/2

 description S11_SGW

 ip vrf forwarding S11_VR

 ip address 192.168.20.1 255.255.255.240

 duplex auto 

interface Ethernet0/3

 description S11_DNS

 ip vrf forwarding S11_VR

 ip address 192.168.21.1 255.255.255.240

 duplex auto