ZyXEL Communications PES-1014 User Manual
Page 64
PES-1014 User’s Guide
10-2
STP
Figure 10-2 Spanning Tree Configuration (Bridge)
Table 10-1 Spanning Tree Configuration (Bridge) Description
FIELD
DESCRIPTION
EXAMPLE
Spanning
Tree
Protocol
state
Select Enable to activate or Disable to deactivate the Spanning Tree Protocol.
Enabling the STP also enables the default VLAN. Disabling the default VLAN also
disables the STP, and vice versa.
Disable
(default)
Bridge
Priority
(0.65535)
Bridge priority decides whether a bridge in a multi-bridge network is a root bridge
or not, a lower numbered bridge priority induces more chance of the switch
becoming the root bridge. Bridge Priority can be set from 0 to 65535.
32768
(default)
Root Bridge
Priority
This is the bridge priority of the root bridge on this network.
32768
Designated
Root
This is an identifier to differentiate different roots in the spanning tree. It is used
as the root identifier in all BPDU packets originating from this node. A designated
root consists of the Root Bridge Priority combined with the Root Bridge MAC
Address.
Root Bridge
MAC
Address
This is the MAC address of the root bridge of the network.
00-50-00-
10-10-28
Root Port
This read-only field shows the port that offers the lowest cost path from this bridge
to the root bridge.
0
Root Path
Cost
This read-only field contains the lowest cost for connecting this bridge to the root
bridge through the root port.
0
Bridge Hello
Time (1..10)
sec
The time interval between BPDU packets in STP, all of the bridges will send the
BPDU packet to elect the root bridge periodically. The root bridge will keep
sending the packets to make sure it is still the root bridge after it has been
elected. Bridge Hello Time can be set from 1 to 10 seconds, the default value is
set at 2 seconds.
2
Bridge Max
Age (6..40)
sec
Bridges will begin to send BPDU packets for electing a new Root Bridge if they
receive no BPDU packets from the Root Bridge for longer than the time period in
Bridge Max Age. Bridge Max Age ranges from 6 to 40 seconds, the default
value is 20 seconds.
20
Forward
Delay
(4..30) sec
Forward Delay determines how long the switch waits before changing its STP
status from listening/learning to learning/forwarding.
You can modify the Forward Delay time to fit your network topology. Larger
15
(default)