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states, which precede the Forwarding state. This value is
also used, when a topology change has been detected
and is underway, to age all dynamic entries in the
Forwarding Database.
STA Port Configuration
Parameters Description
Port Port number of the port
Priority The value of the priority field which is contained in the first
(in network byte order) octet of the (2 octet long) Port ID.
Path Cost The contribution of this port to the path cost of paths
towards the spanning tree root, which include this port.
802.1D-1990 recommends that the default value of this
parameter be in inverse proportion to the speed of the
attached LAN.
Fast Forward The device omits from the 4 steps
(Blocking-Listening-Learning-Forwarding) to 3 steps
(Blocking-Listening-Forwarding) for speeding up specified
port to be running when STA topology has been changed.
4.13 Priority
This switch supports IEEE802.1p CoS with 2-level priority. There are 8 traffic classes and
8 Service Rules in the Priority Map. When one packet carries with priority-tag, which has
specified a CoS (Class of Service) comes into the switch, the specified CoS tag will
determine what priority (Low/High) will it get according to the Priority Map in the switch.
The available Service Rules are: