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Configuring Ethernet Interfaces
Configure VLAN Support
Enabling VLAN Support. To configure the ProCurve Secure Router to rec-
ognize the IEEE 802.1Q tag and route traffic accordingly, enter the following
command from the Ethernet interface configuration mode context:
ProCurve(config-eth 0/1)# encapsulation 802.1Q
After you enter this command, the ProCurve Secure Router immediately
recognizes that it must route traffic through this Ethernet interface to multiple
VLANs with separate IP addresses. You will no longer be able to assign an IP
address to the Ethernet interface. Instead, you must assign an IP address to
the Ethernet subinterfaces.
Creating Subinterfaces. Because each VLAN represents a subnet with a
unique network IP address, you must create one Ethernet subinterface for
each VLAN. To create an Ethernet subinterface, move to the Ethernet interface
mode configuration context and enter the following command:
Syntax: interface eth 0/<port number.subinterface number>
Replace <port number> with 1 for the bottom Ethernet port and with 2 for
the top port. Replace <subinterface number> with a number that uniquely
identifies this subinterface.
For example, to create the Ethernet subinterface 0/1.1, enter:
ProCurve(config-eth 0/1)# interface ethernet 0/1.1
The router prompt shows that you are at the configuration mode context for
the Ethernet subinterface that you just created:
ProCurve(config-eth 0/1.1)#
Setting the VLAN ID. Next, you must associate the subinterface with a
particular VLAN on your network. To create this association, enter the follow-
ing command from the Ethernet subinterface configuration mode context:
Syntax: vlan-id <vlan id> [native]
Replace <vlan id> with the number of the VLAN. Use the native option if you
want the traffic to leave the subinterface untagged. If you do not include this
option, the traffic will remain tagged.
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