Specifications

120 Implementing IBM System Networking 10Gb Ethernet Switches
VLANs
Table 3-13 shows VLANs used in the topology and the member ports of those VLANs.
Table 3-13 VLANs and port assignment
Spanning Tree Protocol
The STP mode that we use in our topology is Per-VLAN Rapid Spanning Tree Protocol
(PVRSTP). Table 3-14 shows the STP priorities for our different VLANs.
Table 3-14 STP bridge priorities
Port1:14 and port2:14 on access switches (ACC-3-1 and ACC-3-2) are configured as Fast
Forward ports.
To prevent unwanted topology changes, caused by plugging another switch into topology,
configure BPDU Guard on all ports on ACC-3-1 and ACC-3-2 switches other than those ports
used in the topology.
3.3.3 Layer 3 architecture
This section describes the IPv4 and IPv6 addressing plan and the complete Layer 3
architecture that are part of both Top-of-Rack and BladeCenter implementations.
VLAN number VLAN name Description Member ports
VLAN4095 Mgmt VLAN Management
VLAN
ACC-3, port15 (MGT1)
ACC-3-2, port15 (MGT1)
VLAN30 Server 3 VLAN VLAN for Server
farm 3
ACC-3, port 1:14 (untagged)
ACC-3, port 1:17 (tagged)
ACC-3, port 1:18 (tagged)
ACC-3-2, port 2:14 (untagged)
ACC-3-2, port 2:17 (tagged)
ACC-3-2, port 2:18 (tagged)
AGG-1, port1 (tagged)
AGG-1, port5 (tagged)
AGG-1, port21 (tagged)
AGG-1, port22 (tagged)
AGG-2, port1 (tagged)
AGG-2, port5 (tagged)
AGG-2, port21 (tagged)
AGG-2, port22 (tagged)
VLAN (STG) Priority on
ACC-3
Priority on
AGG-1
Priority on
AGG-2
30 (30) Default (61470) 0 4096