Optical Systems Design OSD2524, User Manual

Page: 139 / 402

OPTICAL SYSTEMS DESIGN
DOC ID: 10120001
OSD2524 OPERATOR MANUAL
PAGE 139
MSTI PORT CONFIGURATION
Configuration
→
Spanning Tree
→
MSTI Ports
This page allows the user to inspect the current STP MSTI port configurations, and possibly
change them as well.
An MSTI port is a virtual port, which is instantiated separately for each active CIST (physical)
port for each MSTI instance configured on and applicable to the port. The MSTI instance must
be selected before displaying actual MSTI port configuration options.
This page contains MSTI port settings for physical and aggregated ports.
Port
The switch port number of the corresponding STP CIST (and MSTI) port.
Path Cost
Controls the path cost incurred by the port. The
Auto
setting will set the path cost as appropriate by the
physical link speed, using the 802.1D recommended values. Using the
Specific
setting, a user-defined
value can be entered. The path cost is used when establishing the active topology of the network. Lower
path cost ports are chosen as forwarding ports in favour of higher path cost ports. Valid values are in the
range 1 to 200000000.
Priority
Controls the port priority. This can be used to control priority of ports having identical port cost. (See
above).
Buttons
: Click to retrieve settings for a specific MSTI.
: Click to save changes.