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Chapter 5
Advanced Configuration
47
WebView Switches
Multiple STP • Indicates that Multiple STP is enabled
on the device.
Fast Link Indicates if Fast Link is enabled or disabled for
the port or LAG. If Fast Link is enabled for a port, the port is
automatically placed in the forwarding state (configurable
from Spanning Tree > STP Port Settings).
Port State Indicates if RSTP is enabled on the interface.
Point-to-Point Admin Status Indicates if a point-to-point
links are established, or permits the device to establish a
point-to-point link. The possible field values are:
Auto • Enables automatic establishment of point-to-
point links.
Enabled • Enables the device to establish a point-to-
point link. To establish communications over a point-
to-point link, the originating PPP first sends Link
Control Protocol (LCP) packets to configure and test
the data link. After a link is established and optional
facilities are negotiated as needed by the LCP, the
originating PPP sends Network Control Protocols (NCP)
packets to select and configure one or more network
layer protocols. When each of the chosen network
layer protocols has been configured, packets from
each network layer protocol can be sent over the link.
The link remains configured for communications until
explicit LCP or NCP packets close the link, or until some
external event occurs. This is the actual switch port link
type. It may differ from the administrative state.
Disabled • Disables point-to-point link.
Point-to-Point Oper Status Indicates the Point-to-Point
operating state.
Activate Protocol Migration Test This option sends
Link Control Protocol (LCP) packets to test if a data link is
enabled.
Spanning Tree > MSTP Properties
Multiple Spanning Tree Protocol (MSTP) provides differing
load balancing scenarios. For example, while port A is
blocked in one STP instance, the same port is placed in
the Forwarding State in another STP instance. The MSTP
Properties screen contains information for defining global
MSTP settings, including region names, MSTP revisions,
and maximum hops.
Spanning Tree > MSTP Properties
The MSTP Properties screen contains the following fields:
Region Name Provides a user-defined STP region name.
Revision Defines unsigned 16-bit number that identifies
the revision of the current MST configuration. The revision
number is required as part of the MST configuration. The
possible field range 0–65,535.
Max Hops Indicates the total number of hops that occur
in a specific region before the BPDU is discarded. Once the
BPDU is discarded, the port information is aged out. The
possible field range is 1–40. The field default is 20 hops.
IST Master Identifies the Spanning Tree Master instance.
The IST Master is the specified instance root.