User Manual

M4300 Intelligent Edge Series Fully Managed Stackable Switches
Configuration Examples User Manual711
Perform the following procedures on each switch to configure MSTP:
1. Use the VLAN Configuration page to create VLANs 300 and 500 (see
Configure Basic
VLAN Settings on page 181).
2. Use the VLAN Membership page to include ports 1/0/1–1/0/8 as tagged (T) or untagged (U)
members of VLAN 300 and VLAN 500 (see
Configure Basic VLAN Settings on
page 181).
3. From the STP Configuration page, enable the Spanning
Tree State option (see Configure
Advanced STP Settings on page 216).
Use the default values for the rest of the STP configuration settings. By default, the STP
Operation mode is MSTP and the Configuration Name is the switch MAC address.
4. From the CST Configuration page, set the Bridge Priority value for each of the three
switches to force Switch 1 to be the root bridge:
• Switch 1: 4096
• Switch 2: 12288
• Switch 3: 20480
Note: Bridge priority values are multiples of 4096.
If you do not specify a root bridge and all switches are assigned the same bridge priority
value, the switch with the lowest MAC address is elected as the root bridge (see
Configure CST Settings on page 219).
5. From the CST Port Configuration page, select ports 1/0/1–1/0/8 and select Enable from the
STP Status menu (see
Configure CST Port Settings on page 221).
6. Click the Apply button.
7. Select ports 1/0/1–1/0/5 (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 page to view spanning tree information about each
port.
9. From the MST Configuration page, create a MST instances with the following settings:
• MST ID: 1
• Priority: Use the default (32768)
• VLAN ID: 300
For more information, see
Configure MST Settings on page 225.
10. Click the Add button.