Virtual Interfaces; Vlan And Virtual Interface Groups; Dynamic, Static, And Excluded Port Membership - HP 9304m Installation And Getting Started Manual

Installation and Getting Started Guide
If you enable Single STP (SSTP) on the device, the ports in all VLANs on which STP is enabled become members
of a single spanning tree. The ports in VLANs on which STP is disabled are excluded from the single spanning
tree.
For more information, see "Configuring Spanning Tree Protocol (STP)" on page 6-1.

Virtual Interfaces

A virtual interface is a logical routing interface that HP Routing Switches use to route Layer 3 protocol traffic
between protocol VLANs.
HP devices send Layer 3 traffic at Layer 2 within a protocol VLAN. However, Layer 3 traffic from one protocol
VLAN to another must be routed.
If you want the device to be able to send Layer 3 traffic from one protocol VLAN to another, you must configure a
virtual interface on each protocol VLAN, then configure routing parameters on the virtual interfaces. For example,
to enable an HP 9304M, HP 9308M, or HP 9315M Routing Switch to route IP traffic from one IP sub-net VLAN to
another, you must configure a virtual interface on each IP sub-net VLAN, then configure the appropriate IP routing
parameters on each of the virtual interfaces.
Figure 7.6 shows an example of Layer 3 protocol VLANs that use virtual interfaces for routing.
Figure 7.6 Use virtual interfaces for routing between Layer 3 protocol VLANs
VE 1
VE 3
VE 2
VE 4
User-configured port-based VLAN
Protocol VLAN, IP sub-net VLAN,
IPX network VLANor AppleTalk VLAN

VLAN and Virtual Interface Groups

To simplify configuration, you can configure VLAN groups and virtual interface groups. When you create a VLAN
group, the VLAN parameters you configure for the group apply to all the VLANs within the group. Additionally, you
can easily associate the same IP sub-net interface with all the VLANs in a group by configuring a virtual interface
group with the same ID as the VLAN group.
For configuration information, see "Configuring VLAN Groups and Virtual Interface Groups" on page 7-37.

Dynamic, Static, and Excluded Port Membership

When you add ports to a protocol VLAN, IP sub-net VLAN, IPX network VLAN, or AppleTalk cable VLAN, you can
add them dynamically or statically:
• Dynamic ports
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