3Com 7757 Configuration Manual page 586

586 C 55: P ARP C
HAPTER ROXY
Isolate-user-vlan Proxy
ARP Configuration
Example
ONFIGURATION
Create Sub-VLANs (VLAN 2 and VLAN 3).
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Ethernet 2/0/2 belongs to VLAN 2 and Ethernet 2/0/3 belongs to VLAN 3.
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Enable proxy ARP on VLAN-interface 10 to allow Host A (in VLAN 2) and Host B
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(in VLAN 3) to communicate with each other through ARP.
Network diagram
Figure 150 Network diagram for ARP in super VLAN
VLAN 2
Sub VLAN
Host A
192 .168 .10 .99 /16
Configuration procedure
# Create the super VLAN and the sub-VLANs. Add Ethernet 2/0/2 to VLAN 2 and
Ethernet 2/0/3 to VLAN 3. Configure the IP address 192.168.10.100/16 for
VLAN-interface 10.
<Switch> system-view
[Switch] vlan 2
[Switch-vlan2] port ethernet 2/0/2
[Switch-vlan2] quit
[Switch] vlan 3
[Switch-vlan3] port ethernet 2/0/3
[Switch-vlan3] quit
[Switch] vlan 10
[Switch-vlan10] supervlan
[Switch-vlan10] subvlan 2 3
[Switch-vlan10] interface vlan-interface 10
[Switch-Vlan-interface10] ip address 192.168.10.100 255.255.0.0
[Switch-Vlan-interface10] quit
# Enable proxy ARP on VLAN-interface 10 to allow Host A and Host B to
communicate with each other through ARP.
<Switch> system-view
[Switch] interface vlan-interface 10
[Switch-Vlan-interface10] arp proxy enable
[Switch-Vlan-interface10] quit
Network requirements
Switch A is connected to Switch B through Ethernet 2/0/1.
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VLAN 5 on Switch B is an isolate-user-vlan, which contains uplink port Ethernet
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2/0/1 and two secondary VLANs (VLAN 2 and VLAN 3). Ethernet 2/0/2 belongs
to VLAN 2, and Ethernet 2/0/3 belongs to VLAN 3.
Switch
Eth2/0 /2 Eth2 /0/3
Super VLAN 10
Vlan -int10
192 .168 .10.100 /16
VLAN 3
Sub VLAN
Host B
192.168 .10 .200 /16