ZyXEL Communications RGS Series, User Manual

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5.3.44 Spanning Tree – Bridge Settings
This page allows you to configure STP system settings. The settings are used by all STP Bridge instances in the
Switch.
Object Description
Basic Settings
Protocol Version The MSTP / RSTP / STP protocol version setting. Valid values are
STP
,
RSTP
and
MSTP
.
Bridge Priority
Controls the bridge priority. Lower numeric values have better priority. The bridge
priority plus the MSTI instance number, concatenated with the 6-byte MAC address of
the switch forms a
Bridge Identifier .
For
MSTP
operation, this is the priority of the CIST. Otherwise, this is the priority of the
STP/RSTP bridge
Forward Delay The delay used by STP Bridges to transit Root and Designated Ports to Forwarding
(used in STP compatible mode). Valid values are in the range 4 to 30 seconds.
Max Age The maximum age of the information transmitted by the Bridge when it is the Root
Bridge. Valid values are in the range 6 to 40 seconds
Maximum Hop Count
This defines the initial value of remaining Hops for MSTI information generated at the
boundary of an MSTI region. It defines how many bridges a root bridge can distribute
its BPDU information to. Valid values are in the range 6 to 40 hops.