Cisco ESW 500 User Manual

Configuring Spanning Tree
Defining Rapid Spanning Tree
ESW 500 Series Switches Administration Guide 275
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- Designated — Indicates that the port or EtherChannel via which the
designated switch is attached to the LAN.
- Alternate — Provides an alternate path to the root switch from the root
interface.
- Backup — Provides a backup path to the designated port path toward
the Spanning Tree leaves. Backup ports occur only when two ports are
connected in a loop by a point-to-point link. Backup ports also occur
when a LAN has two or more connections connected to a shared
segment.
- Disable — Indicates the port is not participating in the Spanning Tree.
• Mode — Indicates the current Spanning Tree mode. The possible field values
are:
- STP — Indicates that Classic STP is enabled on the port.
- RSTP — Indicates that Rapid STP is enabled on the port.
• Fast Link Operational Status — Indicates if Fast Link is enabled or disabled for
the port or EtherChannel. If Fast Link is enabled for a port, the port is
automatically placed in the forwarding state. The possible field values are:
- Enable — Fast Link is enabled.
- Disable — Fast Link is disabled.
- Auto — Fast Link mode is enabled a few seconds after the interface
becomes active.
• Port Status — Indicates the RSTP status on the specific port. The possible field
values are:
- Disabled — Indicates that STP is currently disabled on the port.
- Blocking — Indicates that the port is currently blocked and cannot
forward traffic or learn MAC addresses.
- Listening — Indicates that the port is in Listening mode. The port cannot
forward traffic nor can it learn MAC addresses.
- Learning — Indicates that the port is in Learning mode. The port cannot
forward traffic, however it can learn new MAC addresses.
- Forwarding — Indicates that the port is in Forwarding mode. The port
can forward traffic and learn new MAC addresses.

Cisco ESW 500 Specifications

General

Brand	Cisco
Model	ESW 500
Category	Switch
Language	English