Brocade Network Advisor SAN + IP User Manual v12.3.0 - Manual (Page 1527)

Brocade Network Advisor SAN + IP User Manual 1455
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Spanning Tree Protocol configuration
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4. Enter a description in the Description field that will be used to identify the configured VLAN.
5. Click the Schedule check box, which is available if you selected Schedule as a deployment
option, to select a frequency.
6. Click the Snapshots check box if you want the Management application to run and save a
report after this configuration is deployed to the device. You can run snapshots before and
after deployments only for IronWare products. Snapshots are not supported for DCB products.
7. Click OK to deploy the configuration on the selected port VLAN.
8. Click Start on the Deployment Status dialog box to save the changes to the selected products.
9. Click Close to close the Deployment Status dialog box.
Spanning Tree Protocol configuration
Spanning Tree Protocol (STP) is a Layer 2 protocol that ensures a loop-free topology for any bridged
local area network (LAN). STP allows a network design to include spare (redundant) links to provide
automatic backup paths if an active link fails. STP creates a spanning tree within a mesh network
of connected Layer 2 bridges and disables those links that are not part of the tree, leaving a single
active path between any two network nodes.
NOTE
STP is disabled when a Network OS product is in VCS mode and an error message is displayed if you
configure STP from the Management application. The VCS nodes do not participate in the STP
topology; however, STP can be enabled on external switches connected to the VCS fabric.
The Management application supports the following types of STP:
• STP — The Spanning Tree Protocol (IEEE 802.1d) is a link layer network protocol that ensures a
loop-free topology for any bridged LAN.
• RSTP — Rapid Spanning Tree Protocol (IEEE 802.1w Internet standard) is a refinement of STP,
which provides for faster spanning tree convergence after a topology change.
• MSTP — Multiple Spanning Tree Protocol (IEEE 802.1s Internet standard) allows several VLANs
to be mapped to a reduced number of spanning tree instances. This is possible because most
networks do not need more than a few logical topologies. Each instance handles multiple
VLANs that have the same Layer 2 topology.
DCB, Network OS (v3.0.0 and later), and IronWare products in standalone mode support viewing of
STP, Rapid STP (RSTP), and Multiple STP (MSTP). Network OS products in standalone mode also
support Per-VLAN Spanning Tree (PVST) and Rapid PVST (RPVST). For Network OS (v4.0.0 and
later), configurations of Spanning Tree Protocol on PVLAN can be viewed in the STP Configuration
dialog box.
Configuring STP or RSTP on a port VLAN
You can configure Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP)
attributes from the VLAN View tab or the Product View tab on the VLAN Manager dialog box.
NOTE
The VLAN View tab displays VLAN membership information for the Brocade 6910 switch; however,
STP configuration is not supported on the IronWare OS 6910 switch.