Port Identifier - Hirschmann RS20 User Manual

Spanning Tree 5.1 The Spanning Tree Protocol
5.1.5

Port Identifier

The port identifier consists of 2 bytes. One part, the lower-value byte,
contains the physical port number. This provides a unique identifier for the
port of this bridge. The second, higher-value part is the port priority, which is
specified by the Administrator (default value: 128). It also applies here that
the port with the smallest number for the port identifier has the highest
priority.
MSB LSB
Priority Port number
Figure 30: Port Identifier
UM Redundancy Configuration L2E
63
Release 7.1 12/2011