7.6.1.0 - Force10 Networks

enable MSTP globally
By default, Multiple Spanning Tree Protocol is not enabled in FTOS. To enable MSTP globally in FTOS,
use these commands in the following sequence in CONFIGURATION mode:
Step Command Syntax Command Mode Usage
1 protocol spanning-tree mstp CONFIGURATION Enter the MSTP mode
2
no disable PROTOCOL MSTP Enable Multiple Spanning Tree Protocol
MSTP runs on all the enabled ports in the VLANs and those running in Layer-2 mode unless you have
explicitly disabled the command with no spanning-tree keywords in the port configuration. By default,
FTOS assigns all VLANs to instance 0.
To view the Multiple Spanning Tree Instance (MSTI) and the interfaces in that instance, use the show
spanning-tree msti instance-number command or the show spanning-tree msti instance-number
brief command. The following examples show the show spanning-tree msti command for instances 0
and 1.
Force10#show spanning-tree msti 0
MSTI 0 VLANs mapped 1-100, 111-4094
Bridge Identifier has priority 32768, Address 0001.e800.0a5c
Configured hello time 2, max age 20, forward delay 15, max hops 20
Current root has priority 32768, Address 0001.e800.0a5c
Number of topology changes 0, last change occurred 47765
Port 58 (GigabitEthernet 1/0) is designated Forwarding
Port path cost 0, Port priority 128, Port Identifier 128.58
Designated root has priority 32768, address 0001.e800.0a:5c
Designated bridge has priority 32768, address 0001.e800.0a:5c
Designated port id is 128.58, designated path cost
Number of transitions to forwarding state 1
BPDU (Mrecords): sent 305, received 0
The port is not in the portfast mode
Port 64 (GigabitEthernet 1/6) is designated Forwarding
Port path cost 0, Port priority 128, Port Identifier 128.64
Designated root has priority 32768, address 0001.e800.0a:5c
Designated bridge has priority 32768, address 0001.e800.0a:5c
Designated port id is 128.64, designated path cost
Number of transitions to forwarding state 1
BPDU (Mrecords): sent 307, received 39
The port is not in the portfast mode
Port 70 (GigabitEthernet 1/12) is designated Forwarding
Port path cost 0, Port priority 128, Port Identifier 128.70
Designated root has priority 32768, address 0001.e800.0a:5c
Designated bridge has priority 32768, address 0001.e800.0a:5c
Designated port id is 128.70, designated path cost
Number of transitions to forwarding state 1
BPDU (Mrecords): sent 307, received 341
The port is not in the portfast mode
Figure 277 show spanning-tree msti 0 Command Example
368 MSTP