H3C SR8800 Configuration Manual page 141

[ProviderA] interface GigabitEthernet2/1/7.100
# Configure subinterface GigabitEthernet 2/1/7.100 to terminate packets whose inner VLAN ID
is 10 or 20.
[ProviderA-GigabitEthernet2/1/7.100] second-dot1q 10 20
# Enable DHCP relay on subinterface GigabitEthernet 2/1/7.100 and select a DHCP server
group.
[ProviderA-GigabitEthernet2/1/7.100] dhcp select relay
[ProviderA-GigabitEthernet2/1/7.100] dhcp relay server-select 1
# Assign an IP address to subinterface GigabitEthernet 2/1/7.100.
[ProviderA-GigabitEthernet2/1/7.100] ip address 192.168.1.1 24
# Enable subinterface GigabitEthernet 2/1/7.100 to transmit broadcast and multicast packets.
[ProviderA-GigabitEthernet2/1/7.100] vlan-termination broadcast enable
[ProviderA-GigabitEthernet2/1/7.100] quit
# Assign an IP address to the interface connecting to the DHCP server.
[ProviderA] interface Serial 4/1/9/1:0
[ProviderA-Serial4/1/9/1:0] ip address 10.1.1.1 24
Configure DHCP server Provider B:
2.
# Assign an IP address to the DHCP server.
<ProviderB> system-view
[ProviderB] interface Serial 4/1/9/1:0
[ProviderB-Serial4/1/9/1:0] ip address 10.2.1.1 24
[ProviderB-Serial4/1/9/1:0] quit
# Enable DHCP.
[ProviderB] dhcp enable
# Configure an IP address pool on the DHCP server.
[ProviderB] dhcp server ip-pool 1
[ProviderB-dhcp-pool-1] network 192.168.1.0 24
[ProviderB-dhcp-pool-1] gateway-list 192.168.1.1
[ProviderB-dhcp-pool-1] quit
# Configure a static route to GigabitEthernet 2/1/7.100.
[ProviderB] ip route-static 192.168.1.1 24 10.1.1.1
NOTE:
The configuration steps below are for your reference only. The actual steps depend on the switches you
use.
Configure Switch A:
3.
# Configure uplink port Ethernet 1/1.
<SwitchA> system-view
[SwitchA] interface ethernet 1/1
[SwitchA-Ethernet1/1] port link-type trunk
# Configure Ethernet 1/1 as a trunk port and assign it to VLAN 100.
[SwitchA-Ethernet1/1] port trunk permit vlan 100
[SwitchA-Ethernet1/1] quit
# Configure downlink port Ethernet 1/2.
[SwitchA] interface ethernet 1/2
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