Brocade Network Advisor SAN User Manual v12.0.0 (53-1002696-01, April 2013)
Brocade Network Advisor SAN User Manual 871
53-1002696-01
VLAN routing
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Adding an MSTP instance
1. Click the STP button on the VLAN Manager dialog box to display the STP Configuration dialog
box.
2. Select a VLAN node (in this example, a FOS node) in the Selected VLANs list, and click the left
arrow button.
The target is automatically set to FOS VLAN in the Target Context list.
3. Select MSTP from the Spanning Tree list.
The STP Configuration dialog box displays the Available MSTP Instances list.
4. Select an MSTP instance from the list under the Available MSTP Instances list, or enter the
MSTP instance number.
5. Click Add.
A new row is added to the Available MSTP Instances list. You can change the bridge priority,
which is set, by default, to 32768.
Deleting an MSTP instance
1. Click the STP button on the VLAN Manager dialog box to display the STP Configuration dialog
box.
2. Select MSTP from the Spanning Tree list.
The STP Configuration dialog box displays the Available MSTP Instances list.
3. Select an MSTP instance from the Available MSTP Instances list, or enter the MSTP instance
number.
4. Click the right arrow button to move the MSTP instance to the Selected VLANs list.
5. Click Delete.
6. Click OK.
VLAN routing
A VLAN restricts the broadcast domain to only its interface members. If nodes connected to two
different VLANs want to communicate, they require an external router to route between the VLANs.
Optionally, Brocade DCB products offer the ability to create a Switch Virtual Interface (SVI) to route
between VLANs.
An SVI is a VLAN of switch ports represented by one interface to a routing or bridging system. There
is no physical interface for the VLAN and the SVI provides the Layer 3 processing for packets from
all switch ports associated with the VLAN. There is one-to-one mapping between a VLAN and an
SVI; therefore, only a single SVI can be mapped to a VLAN. The VLAN is mapped to a network
address using the SVI. All the nodes in the VLAN will belong to the subnet of the SVI.
NOTE
In IOS terms, an SVI is also called a Virtual Routing Interface (VRI). The SVI in DCB products and VRI
in IOS products are the same.