Configuration Guide User guide

760 FastIron Configuration Guide
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VLAN overview
FIGURE 78 Use virtual routing interfaces for routing between Layer 3 protocol VLANs
VLAN and virtual routing interface groups
Brocade FastIron devices support the configuration of VLAN groups. To simplify configuration, you
can configure VLAN groups and virtual routing 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 subnet interface with all the VLANs in a group by configuring a
virtual routing interface group with the same ID as the VLAN group.
For configuration information, refer to “VLAN groups and virtual routing interface group” on
page 791.
User-configured port-based VLAN
User-configured protocol VLAN, IP sub-net VLAN,
IPX network VLAN, or AppleTalk cable VLAN
VE = virtual interface
(“VE” stands for “Virtual Ethernet”)
VE 1
VE 2
VE 3
VE 4
Layer 2 and Layer 3 traffic within a VLAN
is bridged at Layer 2.
Layer 3 traffic between protocol VLANs
is routed using virtual interfaces (VE).
To route to one another, each protocol
VLAN must have a virtual interface.