DISTRIBUTION SWITCH IS THE USER GATEWAY WHICH HAVE ENABLED DHCP RELAY
Core switch acts as DHCP Server.Connect core switch and distribution switch through Layer 3 link.
Network Topology
Configuration Tips
1. Enable DHCP relay on distribution switch
2. Enable DHCP Service on Core switch
Configuration Steps
Core switch：
1. Convert the port connected to distribtuion switch to L3 port and assign a IP address to it.
Ruijie(config)#interface gigabitEthernet 0/24
Ruijie(config-if-GigabitEthernet 0/24)#no switchport
Ruijie(config-if-GigabitEthernet 0/24)#ip address 172.16.1.1 255.255.255.252
Ruijie(config-if-GigabitEthernet 0/24)#exit
2. Configure a static route.
Ruijie(config)#ip route 192.168.1.0 255.255.255.0 172.16.1.2
3. Enable DHCP service
Ruijie(config)#service dhcp ——>DHCP service is disabled by default.
4. Create DHCP pool and configure DHCP parameters —gateway , DNS , subnets
Ruijie(config)#ip dhcp pool vlan10
Ruijie(dhcp-config)#network 192.168.1.0 255.255.255.0 ——>Network subnet
Ruijie(dhcp-config)#dns-server 218.85.157.99 ——>DNS Server
Ruijie(dhcp-config)#default-router 192.168.1.254 ——>User Gateway
Ruijie(dhcp-config)#exit
5. Save configuration
Ruijie(config)#end
Ruijie#wr
Aggregation switch：
1. Assign IP address to Vlan 10 and SVI 10 is user gateway
Ruijie(config)#interface vlan 10
Ruijie(config-if-VLAN 10)#ip address 192.168.1.254 255.255.255.0
Ruijie(config-if-VLAN 10)#exit
2. Convert port connected to Core switch to layer 3 port and assign IP address to it
Ruijie(config)#interface gigabitEthernet 0/24
Ruijie(config-if-GigabitEthernet 0/24)#no switchport
Ruijie(config-if-GigabitEthernet 0/24)#ip address 172.16.1.2 255.255.255.252
Ruijie(config-if-GigabitEthernet 0/24)#exit
3. Configure default route
Ruijie(config)#ip route 0.0.0.0 0.0.0.0 172.16.1.1
4. Enable DHCP service
Ruijie(config)#service dhcp ——>DHCP service is disabled by default
5. Enable DHCP relay
Ruijie(config)#ip helper-address 172.16.1.1 ——>172.16.1.1 is the DHCP Server
6. Save configuration
Ruijie(config)#end
Ruijie#wr
Verification
1. How to display DHCP assignments
2. To display NIC information on a station，execute “run——–>cmd——–>ipconfig /all”
3. How to display status of DHCP relay
