Sample Msti Configuration - OmniSwitch os6900 Network Configuration Manual

Configuring Spanning Tree Parameters

Sample MSTI Configuration

By default, the Spanning Tree software is active on all switches and operating in the per-VLAN mode
using 802.1w RSTP. A loop-free network topology is automatically calculated based on default 802.1w
RSTP switch, bridge, and port parameter values.
Using Multiple Spanning Tree (MST) requires configuration changes to the default Spanning Tree values
(mode and protocol) as well as defining specific MSTP parameters and instances.
The following steps provide a tutorial for setting up a sample MSTP configuration, as shown in the
diagram below:
CIST-0
MSTI-1
1
Change the Spanning Tree operating mode, if necessary, on Switch A and Switch B from per-VLAN to
flat mode using the spantree mode
-> spantree mode flat
Note that defining an MSTP configuration requires the use of explicit Spanning Tree commands,
which are available in both the flat and per-VLAN mode. As a result, this step is optional. See
Spanning Tree Configuration Commands" on page 6-25
2
Change the Spanning Tree protocol to MSTP using the
-> spantree protocol mstp
3
Create VLANs 100, 200, 300, and 400 using the
-> vlan 100
-> vlan 150
-> vlan 200
-> vlan 250
4
Assign switch ports to VLANs, as shown in the above diagram, using the
command. For example, the following commands assign ports 3/1, 4/2, 4/8, and 2/12 to VLANs 100, 150,
200, and 250 on Switch A:
-> vlan 100 members port 3/1 untagged
-> vlan 150 members port 4/2 untagged
-> vlan 200 members port 4/8 untagged
-> vlan 250 members port 2/12 untagged
OmniSwitch AOS Release 7 Network Configuration Guide
3/1
VLAN 100
4/2
VLAN 150
4/8
VLAN 200
2/12
VLAN 250
Switch A
Flat Mode MSTP Quick Steps Example
command. For example:
2/1
VLAN 100
5/1
||
VLAN 150
5/2
||
VLAN 200
3/6
||
VLAN 250
Switch B
for more information.
spantree protocol
vlan command. For example:
June 2013
Sample MSTI Configuration
CIST-0
MSTI-1
"Using
command. For example:
vlan members untagged
page 6-49