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Refer to "Supported transceivers and cables" on page 65 for a list of qualified transceivers for blade
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ports.
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The following table defines the eight-port Fibre Channel port groups for configuring trunk groups or
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"trunks." Color coding on the physical blade identifies the port groups. On the blade, ports belonging to
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the same port group are indicated with the same color border beneath the port on the blade label. Ports
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belonging to the same ASIC are indicated by a border with a similar color tone.
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Table 26. Port groups for configuring
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trunks
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Port number
Port group
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0– 7
0
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8–15
1
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16–23
2
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24–31
3
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32–39
4
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40–47
5
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48-55
6
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56-63
7
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Following are the requirements for forming trunk groups:
v All ports in a trunk group must belong to the same port group. For example, to form an 8-port trunk
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select all eight ports from port group 0 or port group 1. You cannot use ports from each port group for
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the trunk.
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v You can use from 1–8 ports in a port group to form a trunk.
v All ports in a trunk must be running at the same speed.
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v All ports in a trunk must be configured for the same distance.
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v All ports in a trunk must have the same QoS and FEC settings.
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v Trunk groups must be created between Brocade switches (or Brocade adapters in the case of F_Port
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trunking). Brocade trunking is proprietary and is not supported on M-EOS or third-party switches.
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v There must be a direct connection between participating switches.
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Extension blade overview
The SX6 Extension blade is intended as an extension platform to support Fibre Channel (FC), FICON, and
IP based storage data flows. IBM Extension enables you to use the existing IP wide area network (WAN)
infrastructure to connect Fibre Channel and IP fabrics. Extension supports applications such as remote
data replication (RDR), centralized backup, and data migration over very long distances that are
impractical or very costly using native Fibre Channel or IP connections. Extension tunnels, built on a
physical connection between two extension switches or blades, allow Fibre Channel and IP I/O to pass
through the IP WAN. The SX6 Extension blade can connect with an SX6 blade in another SAN256B-6 or
with a 7840 Extension Switch.
Port and extension blades can be mixed in device slots 3, 4, 7, and 8, but CR32-4 blades must be installed
in slots 5 and 6. You can install a maximum of four SX6 blades in the device.
The SX6 blade have the following external ports:
v 16 Fibre Channel (FC) SFP+ ports that support Fibre Channel Routing Services and connection to FC
devices for the IBM Extension feature. These ports support 32 Gbps transceivers operating at 8, 16, or
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SAN256B-6 Installation, Service, and User Guide
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