Cisco switch, inter-vlan routing, and nat address translation

I am eager for the first time to switch between vlan routing and nat addresses of Cisco switches. I am very energetic and have an undefeated spirit. I am ready to continue to answer questions during multiple rounds of interviews. My little brother squashed his eyes and took out the bottom of the press box: If my company has two Internet interfaces, A and B, respectively. The following vswitch divides multiple VLANs. One of the VLANs goes through the-line and the other goes through the B-line. How can this problem be achieved through technology, working like this, I walked by and came home to find a solution. Please refer to the following configuration. objective: To build A vswitch with three VLANs: vlan10, vlan20, and vlan30, where vlan10 follows the-line vlan30, and B-line 2950 to configure the inter-vlan routing step: R1 (confi g) # int s1/0R1 (confi g-if) # ip add 172.16.1.1 255.255.255.0R1 (confi g-if) # no shutR1 (confi g) # int s1/1R1 (confi g-if) # ip add 172.16.2.1 255.255.255.0R1 (confi g-if) # no shutR1 (confi g) # int e0/0R1 (confi g-if) # no shutR1 (confi g) # int e0/0.1R1 (confi g-subif) # encapsulation dot1q 10R1 (confi g-subif) # ip addr 192.168.1.1 255.255.255.0R1 (confi g) # intE0/0.2R1 (confi g-subif) # encapsulation dot1q 20R1 (confi g-subif) # ip addr 192.168.2.1 255.255.0r1 (confi g) # intE0/0.3R1 (confi g-subif) # encapsulation dot1q 30R1 (confi g-subif) # ip addr 192.168.2.1 255.255.255.0R1 (confi g) # ip nat pool tian 172.16.1.1 172.16.1.1 netmask 255.255.255.0R1 (confi g) # access-list 10 permit 192.168.1.0 0.0.255r1 (confi g) # access-list 10 deny anyR1 (confi g) # ip nat inside source list 10 pool tian overloadR1 (confi g) # int s1/0R1 (confi g-if) # ip nat outsideR1 (confi g) # int e0/0.1R1 (confi g-if) # ip nat insideR1 (confi g) # ip nat pool chen 172.16.2.1 172.16.2.1 netmask limit 255.255.0r1 (confi g) # access-list 11 permit 192.168.2.0 0.0.255r1 (confi g) # access-list 11 permit 192.168.3.0 0.0.255r1 (confi g) # access-list 11 deny anyR1 (confi g) # ip nat inside source list 11 pool chen overloadR1 (confi g) # int s1/1R1 (confi g-if) # ip nat outsideR1 (confi g) # int e0/0.2R1 (confi g-if) # ip nat outsideR1 (confi g) # int e0/0.3R1 (confi g-if) # ip nat outside switch configuration step Sw1 (config) # int fa0/0Sw1 (config-if) # switchport mode trunkSw1 (vlan) # vlan 10 name gongchengbuSw1 (vlan) # vlan 20 name caiwubuSw1 (vlan) # vlan 20 name yuangongbuSw1 (config) # int fa0/1Sw1 (config-if) # switchport access vlan 10Sw1 (config) # int fa0/2Sw1 (config-if) # switchport access vlan 20Sw1 (config) # int fa0/3Sw1 (config-if) # switchport access vlan 30Sw1 (config) # int range f0/0-12Sw1 (config-range) # no shutPC machine configuration steps: PC1: C: & gt; ip 192.168.1.2 192.168.1.1PC2: C: & gt; ip 192.168.2.2 192.168.2.1PC3: c: & gt; ip 192.168.3.2 192.168.3.1: pc1 can only be pinged to 172.16.1.2, but not 172.16.2.2. pc2 can only be pinged to 172.16.2.2, not 172.16.1.2. pc3 can be pinged to 172.16.2.2 or 172.16.1.2.