3Com 3C13636 Configuration Manual page 273

3Com Router 3000 Ethernet Family
Configuration Guide
II. Network diagram
1.1.1.2
Figure 3-3 VLANs involving multiple network segments
III. Configuration procedure
Enter the view of each involved Ethernet port, specify its link type, and assign the port
to the specified VLAN.
# Configure Ethernet3/0/1
[3Com] interface ethernet 3/0/1
[3Com-Ethernet3/0/1] port link-type access
[3Com-Ethernet3/0/1] port access vlan 10
# Configure Ethernet 3/0/2
[3Com] interface ethernet 3/0/2
[3Com-Ethernet3/0/2] port link-type access
[3Com-Ethernet3/0/2] port access vlan 10
# Configure Ethernet 3/0/3
[3Com] interface ethernet 3/0/3
[3Com-Ethernet3/0/3] port link-type access
[3Com-Ethernet3/0/3] port access vlan 20
# Configure Ethernet 3/0/4
[3Com] interface ethernet 3/0/4
[3Com-Ethernet3/0/4] port link-type access
[3Com-Ethernet3/0/4] port access vlan 20
To have VLAN 10 and VLAN 20 communicate with each other, you must configure
Ethernet subinterfaces for them for routing purpose. For each VLAN, create a
subinterface and enter its view, run the protocol to be used, associate the VLAN ID to
the subinterface, and assign an IP address and mask.
Do the following:
# Configure Ethernet 3/0/0.1
1.1.1.3
PC1 PC2
VLAN 10
3Com Corporation
Chapter 3 Layer 2 Ethernet Port Configuration
AR 18-22-24
2.2.2.2
PC3
VLAN 20
3-11
2.2.2.3
PC4