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GS700TS Smart Switch Software Administration Manual
4-33 Configuring Switching Settings
v1.0, June 2009
• Forward Delay (Sec) – Displays the device Forward Delay Time. The Forward Delay
Time is the amount of time in seconds a bridge remains in a listening and learning state
before forwarding packets. The default is 15 seconds.
• Hello Time (Sec) – Displays the device Hello Time. The Hello Time indicates the amount
of time in seconds a Root Bridge waits between configuration messages. The default is 2
seconds.
• CST Regional Root – Displays the Common STP regional bridge priority and MAC
address.
2. Select Enable or Disable in the Spanning Tree State provided field.
3. Select STP, RSTP or MSTP in the STP Operation Mode provided field.
4. If STP or STP operation mode were selected, Enter a Configuration Name, a Configuration
Revision Level in the provided fields.
5. Select an Bridge Protocol Data Unit (BPDU) packet option from the BPDU Handling field.
This field is available only when STP is disabled.
6. Click APPLY to update the device.
CST Configuration
The Common Spanning Tree (CST) describes the topology connecting STP/RSTP Bridges and
MSTP regions.
To configure CST on the device:
1. Click Switching > STP > Advanced > CST Configuration. The CST Configuration screen
displays: