Multiple Spanning Tree - Cisco SF 300-08 Administration Manual

Configuring the Spanning Tree Protocol

Multiple Spanning Tree

STEP 7
Multiple Spanning Tree
Cisco Small Business 300 Series Managed Switch Administration Guide
• Fast Link Operational Status—Displays whether the Fast Link (Edge Port) is
enabled, disabled, or automatic for the interface. The values are:
- Enabled—Fast Link is enabled.
- Disabled—Fast Link is disabled.
- Auto—Fast Link mode is enabled a few seconds after the interface
becomes active.
• Port Status—Displays the RSTP status on the specific port.
- Disabled—STP is currently disabled on the port.
- Blocking—The port is currently blocked, and it cannot forward traffic or
learn MAC addresses.
- Listening—The port is in Listening mode. The port cannot forward traffic,
and cannot learn MAC addresses.
- Learning—The port is in Learning mode. The port cannot forward traffic,
however it can learn new MAC addresses.
- Forwarding—The port is in Forwarding mode. The port can forward
traffic and learn new MAC addresses.
Click Apply. The switch is updated.
Multiple Spanning Tree Protocol (MSTP) provides solutions to various load
balancing scenarios. For example, while port A is blocked in one STP instance, the
same port can be placed in the Forwarding State in another STP instance. The
MSTP Properties Page contains information for defining global MSTP.
MSTP Workflow
To configure MSTP perform the following:
1. Set the STP Operation Mode to MSTP as described in the
Status and Global Settings
2. Define MTP Instances. Each MST instance calculates and builds a loop free
topology to bridge packets from the VLANs that map to the instance. Refer to
the Mapping VLANs to a MST Instance
section.
section.
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Configuring STP
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