Specifications

Chapter 3. Reference architectures 119
Figure 3-6 shows the Layer 1 architecture based on the information in Table 3-12 on
page 118.
Figure 3-6 BladeCenter - Layer 1 architecture
3.3.2 Layer 2 architecture
Access layer switches (ACC-3 and ACC-4) are stacked using a pair of connections on
external ports 9 and 10 (port25 and port26). ACC-3 is configured as a stack master.
The BladeCenter architecture is based on Per-VLAN Rapid Spanning Tree Protocol
(PVRSTP) running at all layers up to the aggregation layer.
AGG-2 port1 AGG-1 port1 40 Gbps DAC copper
(QSFP+)
AGG-2 port5 AGG-1 port5 40 Gbps DAC copper
(QSFP+)
Device #1 Interface device
#1
Device #2 Interface device
#2
Interface type Connector/Cable
type