Brocade Network OS Administrator’s Guide v4.1.1 - Manual (Page 429)

3. Enter the no shutdown command to enable the DCB interface.
switch(conf-if-te-0/1)# no shutdown
4. Enter the spanning-tree command to enable port fast on the DCB interface.
switch(conf-if-te-0/1)# spanning-tree portfast
Specifying the port priority (DCB)
From the DCB interface, use this command to specify the port priority. The range is from 0 through 240
in increments of 16. The default value is 128.
In addition, you may specify the spanning tree priority for a specific VLAN. If the VLAN parameter is not
provided, the priority value is applied globally for all per-VLAN instances. However, for the VLANs that
have been configured explicitly, the per-VLAN configuration takes precedence over the global
configuration.
On the Brocade VDX 8770, the VLAN value can be from 1 through 4086. VLAN IDs 4087 through 4094
are internally reserved VLAN IDs. On all other Brocade VDX switches, the VLAN value can be from 1
through 3962, as 3963 through 4094 are reserved.
To specify the port priority on the DCB interface, run the following steps in privileged EXEC mode.
1. Enter the configure terminal command to access global configuration mode.
2. Enter the interface command to specify the DCB interface type and slot/port number.
The gigabitethernet rbridge-id/slot/port operand is used only for the Brocade VDX 6710, Brocade
VDX 8770-4, and Brocade VDX 8770-8. The prompt for these ports is in the following format:
switch(config-if-gi-22/0/1)#.
switch(config)# interface tengigabitethernet 0/1
3. Enter the no shutdown command to enable the DCB interface.
switch(conf-if-te-0/1)# no shutdown
4. Enter the spanning-tree command to specify the port priority on the DCB interface.
switch(conf-if-te-0/1)# spanning-tree priority 32
5. Optional: Enter the spanning-tree command to specify the port priority for a specific VLAN.
switch(conf-if-te-0/1)# spanning-tree priority 32 vlan 10
Restricting the port from becoming a root port (DCB)
From the DCB interface, use this procedure to restrict a port from becoming a root port. The default is to
allow the DCB interface to become a root port. This procedure affects MSTP only.
To restrict the DCB interface from becoming a root port, run the following steps in privileged EXEC
mode.
1. Enter the configure terminal command to access global configuration mode.
2. Enter the interface command to specify the DCB interface type and slot/port number.
The gigabitethernet rbridge-id/slot/port operand is used only for the Brocade VDX 6710, Brocade
VDX 8770-4, and Brocade VDX 8770-8. The prompt for these ports is in the following format:
switch(config-if-gi-22/0/1)#.
switch(config)# interface tengigabitethernet 0/1
3. Enter the no shutdown command to enable the DCB interface.
switch(conf-if-te-0/1)# no shutdown
4. Enter the spanning-tree command to restrict the DCB interface from becoming a root port.
switch(conf-if-te-0/1)# spanning-tree restricted-role
Specifying the port priority (DCB)
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