Brocade Communications Systems 53-1001761-01 User Manual

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Converged Enhanced Ethernet Administrator’s Guide
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53-1001761-01
Configuring STP, RSTP, or MSTP on CEE interface ports
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DRAFT: BROCADE CONFIDENTIAL
4. Enter the spanning-tree command to specify the restrictions for an MSTP instance on a CEE 
interface.
switch(conf-if-te-0/1)#spanning-tree instance 5 cost 3550 restricted-tcn 
Specifying a link type
From the CEE interface, use this command to specify a link type. Specifying the point-to-point 
keyword enables rapid spanning tree transitions to the forwarding state. Specifying the shared 
keyword disables spanning tree rapid transitions. The default setting is point-to-point.
To specify a link type on a CEE interface, perform the following steps from Privileged EXEC mode.
1. Enter the configure terminal command to access global configuration mode.
2. Enter the interface command to specify the CEE interface type and slot/port number. 
switch(config)#interface tengigabitethernet 0/1
3. Enter the no shutdown command to enable the CEE interface.
4. Enter the spanning-tree command to specify the link type on the CEE interface.
switch(conf-if-te-0/1)#spanning-tree link-type shared
Enabling port fast (STP)
From the CEE interface, use this command to enable port fast on an interface to allow the interface 
to quickly transition to the forwarding state. Port fast immediately puts the interface into the 
forwarding state without having to wait for the standard forward time. 
NOTE
If you enable the portfast bpdu-guard option on an interface and the interface receives a BPDU, the 
software disables the interface and puts the interface in the ERR_DISABLE state.
Use the spanning-tree edgeport command for MSTP and RSTP (see 
To enable port fast on the CEE interface for STP, perform the following steps from Privileged EXEC 
mode.
1. Enter the configure terminal command to access global configuration mode.
2. Enter the interface command to specify the CEE interface type and slot/port number. 
switch(config)#interface tengigabitethernet 0/1
3. Enter the no shutdown command to enable the CEE interface.
4. Enter the spanning-tree command to enable port fast on the CEE interface.
switch(conf-if-te-0/1)#spanning-tree portfast 
Specifying the port priority
From the CEE interface, use this command to specify the port priority. The range is 0 through 240 
in increments of 16. The default is 128.