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Page 1: learning.nil.com · interface Serial0/1/0 description *** Primary link *** ip address 192.168.2.1 255.255.255.248 ip dns view-group Primary ip nat outside ! interface Serial0/2/0
Page 2: learning.nil.com · interface Serial0/1/0 description *** Primary link *** ip address 192.168.2.1 255.255.255.248 ip dns view-group Primary ip nat outside ! interface Serial0/2/0
Page 3: learning.nil.com · interface Serial0/1/0 description *** Primary link *** ip address 192.168.2.1 255.255.255.248 ip dns view-group Primary ip nat outside ! interface Serial0/2/0
Page 4: learning.nil.com · interface Serial0/1/0 description *** Primary link *** ip address 192.168.2.1 255.255.255.248 ip dns view-group Primary ip nat outside ! interface Serial0/2/0
Page 5: learning.nil.com · interface Serial0/1/0 description *** Primary link *** ip address 192.168.2.1 255.255.255.248 ip dns view-group Primary ip nat outside ! interface Serial0/2/0
Page 6: learning.nil.com · interface Serial0/1/0 description *** Primary link *** ip address 192.168.2.1 255.255.255.248 ip dns view-group Primary ip nat outside ! interface Serial0/2/0

Server$ ipconfig

Windows IP Configuration

Ethernet adapter Loopback_2:

Connection-specific DNS Suffix . :

IP Address. . . . . . . . . . . . : 10.0.1.5

Subnet Mask . . . . . . . . . . . : 255.255.255.252

Default Gateway . . . . . . . . . :

Ethernet adapter Loopback_1:

Connection-specific DNS Suffix . :

Page 7: learning.nil.com · interface Serial0/1/0 description *** Primary link *** ip address 192.168.2.1 255.255.255.248 ip dns view-group Primary ip nat outside ! interface Serial0/2/0

IP Address. . . . . . . . . . . . : 10.0.1.1

Subnet Mask . . . . . . . . . . . : 255.255.255.252

Default Gateway . . . . . . . . . :

Ethernet adapter LAB:

Connection-specific DNS Suffix . :

IP Address. . . . . . . . . . . . : 10.0.0.10

Subnet Mask . . . . . . . . . . . : 255.255.255.0

Default Gateway . . . . . . . . . : 10.0.0.1

Server$ netstat -rn

Route Table

=======================================================================

Interface List

0x1 ........................... MS TCP Loopback interface

0x2 ...02 00 4c 4f 4f 50 ...... Microsoft Loopback Adapter #2

0x3 ...02 00 4c 4f 4f 50 ...... Microsoft Loopback Adapter

0x10006 ...00 0c 29 a4 c7 ef ...... AMD PCNET Family PCI Ethernet Adapter -

Packet Scheduler Miniport

=======================================================================

Active Routes:

Network Destination Netmask Gateway Interface Metric

0.0.0.0 0.0.0.0 10.0.0.1 10.0.0.10 1

10.0.0.0 255.255.255.0 10.0.0.10 10.0.0.10 10

10.0.0.10 255.255.255.255 127.0.0.1 127.0.0.1 10

10.0.1.0 255.255.255.252 10.0.1.1 10.0.1.1 30

10.0.1.1 255.255.255.255 127.0.0.1 127.0.0.1 30

10.0.1.4 255.255.255.252 10.0.1.5 10.0.1.5 30

10.0.1.5 255.255.255.255 127.0.0.1 127.0.0.1 30

10.255.255.255 255.255.255.255 10.0.0.10 10.0.0.10 10

10.255.255.255 255.255.255.255 10.0.1.1 10.0.1.1 30

Page 8: learning.nil.com · interface Serial0/1/0 description *** Primary link *** ip address 192.168.2.1 255.255.255.248 ip dns view-group Primary ip nat outside ! interface Serial0/2/0

10.255.255.255 255.255.255.255 10.0.1.5 10.0.1.5 30

127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1

224.0.0.0 240.0.0.0 10.0.0.10 10.0.0.10 10

224.0.0.0 240.0.0.0 10.0.1.1 10.0.1.1 30

224.0.0.0 240.0.0.0 10.0.1.5 10.0.1.5 30

255.255.255.255 255.255.255.255 10.0.0.10 10.0.0.10 1

255.255.255.255 255.255.255.255 10.0.1.1 10.0.1.1 1

255.255.255.255 255.255.255.255 10.0.1.5 10.0.1.5 1

Default Gateway: 10.0.0.1

=======================================================================

Persistent Routes:

None

ip route 10.0.1.0 255.255.255.248 10.0.0.10

!

ip nat inside source static tcp 10.0.1.1 80 interface Serial0/1/0 80

ip nat inside source static tcp 10.0.1.5 80 interface Serial0/2/0 80

Page 9: learning.nil.com · interface Serial0/1/0 description *** Primary link *** ip address 192.168.2.1 255.255.255.248 ip dns view-group Primary ip nat outside ! interface Serial0/2/0

interface FastEthernet0/0

ip address 10.0.0.1 255.255.255.0

ip nat inside

ip policy route-map LocalPolicy

!

ip access-list extended From_10.0.1.1

permit ip host 10.0.1.1 any

ip access-list extended From_10.0.1.5

permit ip host 10.0.1.5 any

!

route-map LocalPolicy permit 10

match ip address From_10.0.1.1

set interface Serial0/1/0 Null0

!

route-map LocalPolicy permit 30

match ip address From_10.0.1.5

set interface Serial0/2/0 Null0

Page 10: learning.nil.com · interface Serial0/1/0 description *** Primary link *** ip address 192.168.2.1 255.255.255.248 ip dns view-group Primary ip nat outside ! interface Serial0/2/0

@ IN SOA example.com. test.example.com. (

2008050501; serial number YYMMDDNN

28800 ; Refresh

7200 ; Retry

864000 ; Expire

86400 ; Min TTL

)

NSns.my-primary-isp.invalid.

NSns.my-backup-isp.invalid.

$ORIGIN example.com.

MXmail-gw-1.example.com.

MXmail-gw-2.example.com.

mail-gw-1A192.168.2.1

mail-gw-2A172.16.1.1

Page 11: learning.nil.com · interface Serial0/1/0 description *** Primary link *** ip address 192.168.2.1 255.255.255.248 ip dns view-group Primary ip nat outside ! interface Serial0/2/0

@ IN SOA example.com. test.example.com. (

2008050501; serial number

28800 ; Refresh

7200 ; Retry

864000 ; Expire

86400 ; Min TTL

)

NSns.primary-isp.invalid.

$ORIGIN example.com.

wwwNSwww-ns1

NSwww-ns2

www-ns1A192.168.2.1

www-ns2A172.16.1.1

ip dns view Primary

ip dns view Secondary

!

ip dns view-list Primary

view Primary 1

ip dns view-list Secondary

view Secondary 1

!

ip host view Primary www.example.com 192.168.1.2

ip host view Secondary www.example.com 172.16.1.1

ip dns server

!

Page 12: learning.nil.com · interface Serial0/1/0 description *** Primary link *** ip address 192.168.2.1 255.255.255.248 ip dns view-group Primary ip nat outside ! interface Serial0/2/0

interface Serial0/1/0

description *** Primary link ***

ip address 192.168.2.1 255.255.255.248

ip dns view-group Primary

ip nat outside

!

interface Serial0/2/0

description *** Backup link ***

ip address 172.16.1.1 255.255.255.252

ip dns view-group Secondary

ip nat outside

; <<>> DiG 9.4.1 <<>> www.example.com.

;; global options: printcmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1837

;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:

;www.example.com. IN A

;; ANSWER SECTION:

Page 13: learning.nil.com · interface Serial0/1/0 description *** Primary link *** ip address 192.168.2.1 255.255.255.248 ip dns view-group Primary ip nat outside ! interface Serial0/2/0

www.example.com. 10 IN A 192.168.1.2

;; AUTHORITY SECTION:

www.example.com. 86400 IN NS www-ns2.example.com.

www.example.com. 86400 IN NS www-ns1.example.com.

;; ADDITIONAL SECTION:

www-ns1.example.com. 86400 IN A 192.168.2.1

www-ns2.example.com. 86400 IN A 172.16.1.1

;; Query time: 60 msec

;; SERVER: 127.0.0.1#53(127.0.0.1)

;; WHEN: Tue May 06 10:05:45 2008

;; MSG SIZE rcvd: 125

Page 14: learning.nil.com · interface Serial0/1/0 description *** Primary link *** ip address 192.168.2.1 255.255.255.248 ip dns view-group Primary ip nat outside ! interface Serial0/2/0
Page 15: learning.nil.com · interface Serial0/1/0 description *** Primary link *** ip address 192.168.2.1 255.255.255.248 ip dns view-group Primary ip nat outside ! interface Serial0/2/0