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Figure 45 shows an example of VLANs that span multiple BladeCenter T units. In
this example, Layer 2 VLANs span the BladeCenter T units within each rack. Layer
3 subnets separate the VLANs into segments.
MAC
1a
1
1b
2a
2
2b
3a
3
3b
4a
4
4b
5a
5
5b
6a
6
6b
7a
7
7b
8a
8
8b
MAC
1a
1
1b
2a
2
2b
3a
3
3b
4a
4
4b
5a
5
5b
6a
6
6b
7a
7
7b
8a
8
8b
MAC
1a
1
1b
2a
2
2b
3a
3
3b
4a
4
4b
5a
5
5b
6a
6
6b
7a
7
7b
8a
8
8b
MAC
1a
1
1b
2a
2
2b
3a
3
3b
4a
4
4b
5a
5
5b
6a
6
6b
7a
7
7b
8a
8
8b
Figure 45. VLAN configuration example for multiple BladeCenter T units
Multicasting
To configure multicasting, determine the settings to be used for IGMP snooping and
the entries to be included in the multicast forwarding table.
Port mirroring
The switch module provides the capability of copying frames that were transmitted
and received on a source port and redirecting the copies to another target port. The
82
BladeCenter T Types 8720 and 8730: Planning and Installation Guide
L3-7 Switch
L2+ Switch
L2+ Switch
Switch A
Mgmt
Mod
Switch B
Switch A
Mgmt
Mod
Switch B
Switch A
Mgmt
Mod
Switch B
Switch A
Mgmt
Mod
Switch B
L2+ Switch
L2+ Switch
MAC
1a
1
1b
2a
2
2b
3a
3
3b
4a
4
4b
5a
5
5b
6a
6
6b
7a
7
7b
8a
8
8b
MAC
1a
1
1b
2a
2
2b
3a
3
3b
4a
4
4b
5a
5
5b
6a
6
6b
7a
7
7b
8a
8
8b
MAC
1a
1
1b
2a
2
2b
3a
3
3b
4a
4
4b
5a
5
5b
6a
6
6b
7a
7
7b
8a
8
8b
MAC
1a
1
1b
2a
2
2b
3a
3
3b
4a
4
4b
5a
5
5b
6a
6
6b
7a
7
7b
8a
8
8b
Switch A
Mgmt
Mod
Switch B
Switch A
Mgmt
Mod
Switch B
Switch A
Mgmt
Mod
Switch B
Switch A
Mgmt
Mod
Switch B
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