Manual-mode MFF configuration example in a ring network

As shown in Figure 118, all the devices are in VLAN 100, and the switches form a ring. Host A, Host B, and Host C are configured with IP addresses manually. They are isolated at Layer 2, and can communicate with each other through the gateway. To ensure communication between hosts and the server, the IP address of the server is specified on the MFF devices manually.

<Gateway> system-view
[Gateway] interface Vlan-interface 1
[Gateway-Vlan-interface1] ip address 10.1.1.100 24

# Enable STP.

[SwitchA] stp enable

# Configure manual-mode MFF.

[SwitchA] vlan 100
[SwitchA-vlan-100] mac-forced-forwarding default-gateway 10.1.1.100

# Specify the IP address of the server.

[SwitchA-vlan-100] mac-forced-forwarding server 10.1.1.200

# Enable ARP snooping.

[SwitchA-vlan-100] arp-snooping enable
[SwitchA-vlan-100] quit

# Configure Ethernet 1/0/2 and Ethernet 1/0/3 as network ports.

[SwitchA] interface ethernet 1/0/2
[SwitchA-Ethernet1/0/2] mac-forced-forwarding network-port
[SwitchA-Ethernet1/0/2] quit
[SwitchA] interface ethernet 1/0/3
[SwitchA-Ethernet1/0/3] mac-forced-forwarding network-port

# Enable STP.

[SwitchB] stp enable

# Configure manual-mode MFF.

[SwitchB] vlan 100
[SwitchB-vlan-100] mac-forced-forwarding default-gateway 10.1.1.100

# Specify the IP address of the server.

[SwitchB-vlan-100] mac-forced-forwarding server 10.1.1.200

# Enable ARP snooping.

[SwitchB-vlan-100] arp-snooping enable
[SwitchB-vlan-100] quit

# Configure Ethernet 1/0/4 and Ethernet 1/0/6 as network ports.

[SwitchB] interface ethernet 1/0/4
[SwitchB-Ethernet1/0/4] mac-forced-forwarding network-port
[SwitchB- Ethernet1/0/4] quit
[SwitchB] interface ethernet 1/0/6
[SwitchB-Ethernet1/0/6] mac-forced-forwarding network-port

<SwitchC> system-view
[SwitchC] stp enable