Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 373)

Multi-Service IronWare Switching Configuration Guide 343
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SuperSpan™
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These commands configure two interfaces on the Brocade device as SuperSpan boundary
interfaces. Interface
1/1 is a boundary interface with customer 1. Interface 1/2 is a boundary interface with customer
2. Each boundary interface is associated with a number, which is the SuperSpan ID. The
SuperSpan ID identifies the instance of SuperSpan you are associating with the interface. Use the
same SuperSpan ID for each boundary interface with the same customer. Use a different
SuperSpan ID for each customer. For example, use SuperSpan ID 1 for all the boundary interfaces
with customer 1 and use SuperSpan ID 2 for all boundary interfaces with customer 2.
Syntax: [no] stp-boundary num
The num parameter specifies the SuperSpan ID. Possible values: 1 – 65535.
To configure the boundary interfaces on SP 2 in Figure 57 , enter the following commands.
Brocade(config)# interface 2/1
Brocade(config-if-e1000-2/1)# stp-boundary 1
Brocade(config)# interface 2/2
Brocade(config-if-e1000-2/2)# stp-boundary 2
Enabling SuperSpan
After you configure the SuperSpan boundary interfaces, enable SuperSpan. You can enable
SuperSpan globally or on an individual VLAN level. If you enable the feature globally, the feature is
enabled on all VLANs.
NOTE
If you enable the feature globally, then create a new VLAN, the new VLAN inherits the global
SuperSpan state. For example, if SuperSpan is globally enabled when you create a VLAN, SuperSpan
also is enabled in the new VLAN.
You also can change the length of the preforwarding state.
To globally enable SuperSpan, enter the following command.
Brocade(config)# super-span
Syntax: [no] super-span [preforward-delay secs]
The secs parameter specifies the length of the preforwarding state. You can specify from 3 – 15
seconds. The default is 5 seconds.
SuperSpan is enabled in all VLANs on the Brocade device. To disable SuperSpan in an individual
VLAN, enter commands such as the following.
Brocade(config)# vlan 10
Brocade(config-vlan-10)# no super-span
Syntax: [no] super-span