Dhcp Address

This scenario shows how to obtain an IP address over DHCP (Dynamic Host Configuration Protocol).

Test DHCP Client

Description

DUT0 is configured to obtain an IP address over DHCP.

Scenario

Step 1: Set the following configuration in DUT1:

set interfaces ethernet eth0 address 192.168.100.1/24
set interfaces ethernet eth1 address 10.0.0.1/24
set service dhcp-server shared-network dhcpserver subnet 192.168.100.0/24 options default-router 192.168.100.1
set service dhcp-server shared-network dhcpserver subnet 192.168.100.0/24 start 192.168.100.50 stop 192.168.100.50

Step 2: Set the following configuration in DUT0:

set interfaces bridge br0 address dhcp
set interfaces ethernet eth0 bridge-group bridge br0

Step 3: Run command interfaces bridge show detailed at DUT0 and check if output contains the following tokens:

192.168.100.50/24

Show output

--------------------------------------------------------------------------------------------------------------
Name  Idx           IP Address           Admin  Oper  Link  MTU   Vrf  Upper  Lower   Type       Phys addr
--------------------------------------------------------------------------------------------------------------
 br0  387  192.168.100.50/24             up     up    up    1500                     bridge  de:ad:be:ef:6c:10
           fe80::d478:d8ff:fe61:d99f/64

Step 4: Run command service dhcp-client show leases interface br0 at DUT0 and check if output contains the following tokens:

192.168.100.50

Show output

Interface:     br0
IP address:    192.168.100.50
Subnet mask:   255.255.255.0
Routers:       192.168.100.1
Name-servers:
Domain-name:
NTP servers:
DHCP server:   192.168.100.1
Lease time:    43200
Expiry date:   Thu Jan 25 13:21:52 2024
Reason:        BOUND

Step 5: Run command protocols ip show route at DUT0 and check if output matches the following regular expressions:

S>.*0\.0\.0\.0\/0.*via 192.168.100.1, br0.*

Show output

Codes: K - kernel route, C - connected, S - static, R - RIP,
       O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
       T - Table, v - VNC, V - VNC-Direct, A - Babel, F - PBR,
       f - OpenFabric,
       > - selected route, * - FIB route, q - queued, r - rejected, b - backup
       t - trapped, o - offload failure

S>* 0.0.0.0/0 [1/0] via 192.168.100.1, br0, weight 1, 00:00:01
C>* 192.168.100.0/24 is directly connected, br0, 00:00:01

Step 6: Ping IP address 192.168.100.1 from DUT0:

admin@DUT0$ ping 192.168.100.1 count 1 size 56 timeout 1

Show output

PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.
64 bytes from 192.168.100.1: icmp_seq=1 ttl=64 time=0.315 ms

--- 192.168.100.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.315/0.315/0.315/0.000 ms

Step 7: Ping IP address 10.0.0.1 from DUT0:

admin@DUT0$ ping 10.0.0.1 count 1 size 56 timeout 1

Show output

PING 10.0.0.1 (10.0.0.1) 56(84) bytes of data.
64 bytes from 10.0.0.1: icmp_seq=1 ttl=64 time=0.384 ms

--- 10.0.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.384/0.384/0.384/0.000 ms

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