Brocade BigIron RX Series Configuration Guide - Manual (Page 433)

BigIron RX Series Configuration Guide 355
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SuperSpan™
12
FIGURE 39 Customer and SP using single STP
In this setup, both the customer and SP networks are running a single spanning tree at Layer 2.
The traffic from VLAN 10 and 20 will be carried, or aggregated by VLAN 100 at the SP network as in
the previous scenario. Loop-free, non-blocking topology is still separately maintained by the
customer's single spanning tree and the SP's single spanning tree.
Configuring SuperSpan
To configure a device for SuperSpan:
• Configure each interface on the device that is connected to customer equipment as a
boundary interface. This step enables the interface to convert the destination MAC address in
the customer's BPDUs.
The software requires you to specify a SuperSpan customer ID when configuring the boundary
interface. Use an ID from 1 – 65535. The customer ID uniquely identifies the customer. Use
the same customer ID for each SP interface with the same customer. When tunneling BPDUs
through the Brocade network, the devices use the customer ID to ensure that BPDUs are
forwarded only to the customer's devices, and not to other customers' devices.
• Globally enable SuperSpan. This step enables the Preforwarding state.
Configuring a boundary interface
To configure the boundary interfaces on SP 1 in , enter the following commands.
BigIron RX(config)# interface ethernet 1/1
BigIron RX(config-if-e1000-1/1)# stp-boundary 1
BigIron RX(config)# interface etehrnet 1/2
BigIron RX(config-if-e1000-1/2)# stp-boundary 2
tagged to multiple vlan
stp-boundary
untagged to vlan 100 (Super Aggregated VLAN)
Customer
Region
Provider
Region
Root bridge for VLAN xx
1/1
2/1
2/2
3/1
2/1
2/2
R R
R
xx
single
span
single
span