Dns-Options

These scenarios check DHCP server DNS and name resolution options. This includes: dns-server, domain-name, and domain-search. Verification is done via the hidden extended-detail command to confirm the client correctly received the options.

DNS Options

Description

Verify DNS server options via extended-detail.

Scenario

Example 1

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.0.0.1/24
set service dhcp-server shared-network dns-single subnet 10.0.0.0/24 options dns-server 8.8.8.8
set service dhcp-server shared-network dns-single subnet 10.0.0.0/24 start 10.0.0.5 stop 10.0.0.5
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address dhcp
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Run command interfaces ethernet eth0 show at DUT1 and check if output contains the following tokens:

10.0.0.5
Show output
-----------------------------------------------------------------
Name           IP Address           Admin  Oper  Vrf  Description
-----------------------------------------------------------------
eth0  10.0.0.5/24                   up     up
      fe80::dcad:beff:feef:6c10/64

Step 4: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:      8.8.8.8
Domain-name:
Domain-search:
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:15:58 2026
Reason:            BOUND

Example 2

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.0.0.1/24
set service dhcp-server shared-network dns-multiple subnet 10.0.0.0/24 options dns-server 1.1.1.1
set service dhcp-server shared-network dns-multiple subnet 10.0.0.0/24 options dns-server 8.8.4.4
set service dhcp-server shared-network dns-multiple subnet 10.0.0.0/24 options dns-server 8.8.8.8
set service dhcp-server shared-network dns-multiple subnet 10.0.0.0/24 start 10.0.0.5 stop 10.0.0.5
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address dhcp
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Run command interfaces ethernet eth0 show at DUT1 and check if output contains the following tokens:

10.0.0.5
Show output
-----------------------------------------------------------------
Name           IP Address           Admin  Oper  Vrf  Description
-----------------------------------------------------------------
eth0  10.0.0.5/24                   up     up
      fe80::dcad:beff:feef:6c10/64

Step 4: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:      8.8.8.8
                   8.8.4.4
                   1.1.1.1
Domain-name:
Domain-search:
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:04 2026
Reason:            BOUND

Step 5: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:      8.8.8.8
                   8.8.4.4
                   1.1.1.1
Domain-name:
Domain-search:
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:04 2026
Reason:            BOUND

Step 6: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:      8.8.8.8
                   8.8.4.4
                   1.1.1.1
Domain-name:
Domain-search:
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:04 2026
Reason:            BOUND

Example 3

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.0.0.1/24
set service dhcp-server shared-network domain-name subnet 10.0.0.0/24 options domain-name example.com
set service dhcp-server shared-network domain-name subnet 10.0.0.0/24 start 10.0.0.5 stop 10.0.0.5
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address dhcp
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Run command interfaces ethernet eth0 show at DUT1 and check if output contains the following tokens:

10.0.0.5
Show output
-----------------------------------------------------------------
Name           IP Address           Admin  Oper  Vrf  Description
-----------------------------------------------------------------
eth0  10.0.0.5/24                   up     up
      fe80::dcad:beff:feef:6c10/64

Step 4: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:
Domain-name:       example.com
Domain-search:
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:11 2026
Reason:            BOUND

Example 4

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.0.0.1/24
set service dhcp-server shared-network domain-search-single subnet 10.0.0.0/24 options domain-search example.com
set service dhcp-server shared-network domain-search-single subnet 10.0.0.0/24 start 10.0.0.5 stop 10.0.0.5
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address dhcp
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Run command interfaces ethernet eth0 show at DUT1 and check if output contains the following tokens:

10.0.0.5
Show output
-----------------------------------------------------------------
Name           IP Address           Admin  Oper  Vrf  Description
-----------------------------------------------------------------
eth0  10.0.0.5/24                   up     up
      fe80::dcad:beff:feef:6c10/64

Step 4: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:
Domain-name:
Domain-search:     example.com.
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:17 2026
Reason:            BOUND

Example 5

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.0.0.1/24
set service dhcp-server shared-network domain-search-multiple subnet 10.0.0.0/24 options domain-search example.com
set service dhcp-server shared-network domain-search-multiple subnet 10.0.0.0/24 options domain-search local.lan
set service dhcp-server shared-network domain-search-multiple subnet 10.0.0.0/24 options domain-search test.com
set service dhcp-server shared-network domain-search-multiple subnet 10.0.0.0/24 start 10.0.0.5 stop 10.0.0.5
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address dhcp
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Run command interfaces ethernet eth0 show at DUT1 and check if output contains the following tokens:

10.0.0.5
Show output
-----------------------------------------------------------------
Name           IP Address           Admin  Oper  Vrf  Description
-----------------------------------------------------------------
eth0  10.0.0.5/24                   up     up
      fe80::dcad:beff:feef:6c10/64

Step 4: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:
Domain-name:
Domain-search:     example.com.
                   test.com.
                   local.lan.
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:23 2026
Reason:            BOUND

Step 5: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:
Domain-name:
Domain-search:     example.com.
                   test.com.
                   local.lan.
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:23 2026
Reason:            BOUND

Step 6: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:
Domain-name:
Domain-search:     example.com.
                   test.com.
                   local.lan.
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:23 2026
Reason:            BOUND

Example 6

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.0.0.1/24
set service dhcp-server shared-network dns-combined subnet 10.0.0.0/24 options dns-server 8.8.4.4
set service dhcp-server shared-network dns-combined subnet 10.0.0.0/24 options dns-server 8.8.8.8
set service dhcp-server shared-network dns-combined subnet 10.0.0.0/24 options domain-name example.com
set service dhcp-server shared-network dns-combined subnet 10.0.0.0/24 options domain-search example.com
set service dhcp-server shared-network dns-combined subnet 10.0.0.0/24 options domain-search test.com
set service dhcp-server shared-network dns-combined subnet 10.0.0.0/24 start 10.0.0.5 stop 10.0.0.5
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address dhcp
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Run command interfaces ethernet eth0 show at DUT1 and check if output contains the following tokens:

10.0.0.5
Show output
-----------------------------------------------------------------
Name           IP Address           Admin  Oper  Vrf  Description
-----------------------------------------------------------------
eth0  10.0.0.5/24                   up     up
      fe80::dcad:beff:feef:6c10/64

Step 4: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:      8.8.8.8
                   8.8.4.4
Domain-name:       example.com
Domain-search:     example.com.
                   test.com.
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:30 2026
Reason:            BOUND

Step 5: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:      8.8.8.8
                   8.8.4.4
Domain-name:       example.com
Domain-search:     example.com.
                   test.com.
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:30 2026
Reason:            BOUND

Step 6: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:      8.8.8.8
                   8.8.4.4
Domain-name:       example.com
Domain-search:     example.com.
                   test.com.
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:30 2026
Reason:            BOUND

Step 7: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:      8.8.8.8
                   8.8.4.4
Domain-name:       example.com
Domain-search:     example.com.
                   test.com.
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:30 2026
Reason:            BOUND

Step 8: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:      8.8.8.8
                   8.8.4.4
Domain-name:       example.com
Domain-search:     example.com.
                   test.com.
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:30 2026
Reason:            BOUND

DNS VRF Options

Description

Verify DNS options with VRF configuration.

Scenario

Example 1

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.0.0.1/24
set interfaces ethernet eth0 vrf VRF0
set service dhcp-server shared-network dns-vrf local-vrf VRF0
set service dhcp-server shared-network dns-vrf subnet 10.0.0.0/24 options dns-server 8.8.4.4
set service dhcp-server shared-network dns-vrf subnet 10.0.0.0/24 options dns-server 8.8.8.8
set service dhcp-server shared-network dns-vrf subnet 10.0.0.0/24 start 10.0.0.5 stop 10.0.0.5
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set system vrf VRF0

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address dhcp
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Run command interfaces ethernet eth0 show at DUT1 and check if output contains the following tokens:

10.0.0.5
Show output
-----------------------------------------------------------------
Name           IP Address           Admin  Oper  Vrf  Description
-----------------------------------------------------------------
eth0  10.0.0.5/24                   up     up
      fe80::dcad:beff:feef:6c10/64

Step 4: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:      8.8.8.8
                   8.8.4.4
Domain-name:
Domain-search:
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:42 2026
Reason:            BOUND

Step 5: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:      8.8.8.8
                   8.8.4.4
Domain-name:
Domain-search:
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:42 2026
Reason:            BOUND

Example 2

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.0.0.1/24
set interfaces ethernet eth0 vrf VRF0
set service dhcp-server shared-network domain-name-vrf local-vrf VRF0
set service dhcp-server shared-network domain-name-vrf subnet 10.0.0.0/24 options domain-name example.com
set service dhcp-server shared-network domain-name-vrf subnet 10.0.0.0/24 start 10.0.0.5 stop 10.0.0.5
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set system vrf VRF0

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address dhcp
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Run command interfaces ethernet eth0 show at DUT1 and check if output contains the following tokens:

10.0.0.5
Show output
-----------------------------------------------------------------
Name           IP Address           Admin  Oper  Vrf  Description
-----------------------------------------------------------------
eth0  10.0.0.5/24                   up     up
      fe80::dcad:beff:feef:6c10/64

Step 4: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:
Domain-name:       example.com
Domain-search:
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:48 2026
Reason:            BOUND

DNS Change Options

Description

Verify DNS options can be changed dynamically.

Scenario

Example 1

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.0.0.1/24
set service dhcp-server shared-network dns-single subnet 10.0.0.0/24 options dns-server 8.8.8.8
set service dhcp-server shared-network dns-single subnet 10.0.0.0/24 start 10.0.0.5 stop 10.0.0.5
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address dhcp
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Run command interfaces ethernet eth0 show at DUT1 and check if output contains the following tokens:

10.0.0.5
Show output
-----------------------------------------------------------------
Name           IP Address           Admin  Oper  Vrf  Description
-----------------------------------------------------------------
eth0  10.0.0.5/24                   up     up
      fe80::dcad:beff:feef:6c10/64

Step 4: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:      8.8.8.8
Domain-name:
Domain-search:
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:16:59 2026
Reason:            BOUND

Step 5: Modify the following configuration lines in DUT0 :

set service dhcp-server shared-network dns-single subnet 10.0.0.0/24 options dns-server 8.8.4.4

Step 6: Run command service dhcp-client renew interface eth0 at DUT1 and expect this output:

Show output
Renewing DHCP lease on interface eth0...

Step 7: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:      8.8.8.8
                   8.8.4.4
Domain-name:
Domain-search:
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43198
Expiry date:       Mon Mar 23 21:16:59 2026
Reason:            REBOOT

Example 2

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.0.0.1/24
set service dhcp-server shared-network domain-name subnet 10.0.0.0/24 options domain-name example.com
set service dhcp-server shared-network domain-name subnet 10.0.0.0/24 start 10.0.0.5 stop 10.0.0.5
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address dhcp
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Run command interfaces ethernet eth0 show at DUT1 and check if output contains the following tokens:

10.0.0.5
Show output
-----------------------------------------------------------------
Name           IP Address           Admin  Oper  Vrf  Description
-----------------------------------------------------------------
eth0  10.0.0.5/24                   up     up
      fe80::dcad:beff:feef:6c10/64

Step 4: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:
Domain-name:       example.com
Domain-search:
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:17:06 2026
Reason:            BOUND

Step 5: Modify the following configuration lines in DUT0 :

set service dhcp-server shared-network domain-name subnet 10.0.0.0/24 options domain-name test.com

Step 6: Run command service dhcp-client renew interface eth0 at DUT1 and expect this output:

Show output
Renewing DHCP lease on interface eth0...

Step 7: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:
Domain-name:       test.com
Domain-search:
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43197
Expiry date:       Mon Mar 23 21:17:05 2026
Reason:            REBOOT

DNS Remove Options

Description

Verify DNS options can be removed.

Scenario

Example 1

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.0.0.1/24
set service dhcp-server shared-network dns-multiple subnet 10.0.0.0/24 options dns-server 1.1.1.1
set service dhcp-server shared-network dns-multiple subnet 10.0.0.0/24 options dns-server 8.8.4.4
set service dhcp-server shared-network dns-multiple subnet 10.0.0.0/24 options dns-server 8.8.8.8
set service dhcp-server shared-network dns-multiple subnet 10.0.0.0/24 start 10.0.0.5 stop 10.0.0.5
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address dhcp
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Run command interfaces ethernet eth0 show at DUT1 and check if output contains the following tokens:

10.0.0.5
Show output
-----------------------------------------------------------------
Name           IP Address           Admin  Oper  Vrf  Description
-----------------------------------------------------------------
eth0  10.0.0.5/24                   up     up
      fe80::dcad:beff:feef:6c10/64

Step 4: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:      8.8.8.8
                   8.8.4.4
                   1.1.1.1
Domain-name:
Domain-search:
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43200
Expiry date:       Mon Mar 23 21:17:17 2026
Reason:            BOUND

Step 5: Modify the following configuration lines in DUT0 :

delete service dhcp-server shared-network dns-multiple subnet 10.0.0.0/24 options

Step 6: Run command service dhcp-client renew interface eth0 at DUT1 and expect this output:

Show output
Renewing DHCP lease on interface eth0...

Step 7: Run command service dhcp-client show leases extended-detail interface eth0 at DUT1 and expect this output:

Show output
Interface:         eth0
IP address:        10.0.0.5
Subnet mask:       255.255.255.0
Routers:
Name-servers:
Domain-name:
Domain-search:
NTP servers:
Time servers:
Time offset:
SMTP servers:
POP3 servers:
WINS servers:
TFTP server:
TFTP server addr:
Next server:
Bootfile name:
NIS domain:
NIS servers:
NIS+ domain:
NIS+ servers:
RFC3442 routes:
WPAD url:
DHCP server:       10.0.0.1
Lease time:        43197
Expiry date:       Mon Mar 23 21:17:17 2026
Reason:            REBOOT