NETGEAR S3300 User Manual page 353

Note: Bridge priority values are multiples of 4096.
If you do not specify a root bridge and all switches have the same Bridge Priority value,
the switch with the lowest MAC address is elected as the root bridge (see
Configuration on page 160).
5. From the CST Port Configuration screen, select ports g1–g8 and select Enable from the
STP Status list.
For more information about this step, see
6. Click the Apply button.
7. Select ports g1–g5 (edge ports), and select Enable from the Fast Link menu.
Since the edge ports are not at risk for network loops, ports with Fast Link enabled
transition directly to the Forwarding state.
8. Click the Apply button.
You can use the CST Port Status screen to view spanning tree information about each
port.
9. From the MST Configuration screen, create a MST instances with the following settings:
• MST ID. 1
• Priority. Use the default (32768)
• VLAN ID. 300
For more information about this step, see
10. Click the Add button.
11. Create a second MST instance with the following settings
• MST ID. 2
• Priority. 49152
• VLAN ID. 500
12. Click the Add button.
In this example, assume that Switch 1 has become the Root bridge for the MST instance 1,
and Switch 2 has become the Root bridge for MST instance 2. Switch 3 has hosts in the
Sales department (ports g1, g2, and g3) and in the HR department (ports g4 and g5).
Switches 1 and 2 also have hosts in the Sales and Human Resources departments. The
hosts connected from Switch 2 use VLAN 500, MST instance 2 to communicate with the
hosts on Switch 3 directly. Likewise, hosts of Switch 1 use VLAN 300, MST instance 1 to
communicate with the hosts on Switch 3 directly.
The hosts use different instances of MSTP to effectively use the links across the switch. The
same concept can be extended to other switches and more instances of MSTP.
S3300 Smart Managed Pro Switch
CST Port Configuration
MST Configuration
Configuration Examples
353
CST
on page 161.
on page 165.