IBM SAN512B-6, Инструкция по установке, обслуживанию и эксплуатации

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Each numbered QSFP port on the blade provides four 32 Gbps FC ports to obtain a
total link speed of 128 Gbps. The following table shows the mappings from the
numbered QSFP ports on the face of the core blade to the individual FC port
numbers.
Table 18. External port to
slotShow
port mapping for core blades
External port
number
FC port numbers
External port
number
FC port numbers
0 0-3 8 32-35
1 4-7 9 36-39
2 8-11 10 40-43
3 12-15 11 44-47
4 16-19 12 48-51
5 20-23 13 52-55
6 24-27 14 56-59
7 28-31 15 60-63
ICL trunking groups
Multiple switches can be connected through inter-chassis links (ICLs) between
4x32-Gbps QSFPs on core routing blades installed in these devices. Each QSFP
connection between two devices provides 128 Gbps bandwidth. Trunking
optimizes the use of ICL bandwidth by allowing a group of links to merge into a
single logical link, called a trunk. Traffic is distributed dynamically and in order
over this trunk, achieving greater performance with fewer links. Within the trunk,
multiple physical ports appear as a single port, thus simplifying management.
Trunking also improves system reliability by maintaining in-order delivery of data
and avoiding I/O retries if one link within the trunk fails.
Each QSFP provides four 32 Gbps FC ports. Since each port within a QSFP
terminates on a different ASIC within each core blade, an ICL trunk cannot be
formed using the individual FC ports within the same QSFP. A trunk has to be
formed from individual FC ports in different QSFP ports. These QSFP ports must
reside in the same trunk group. To form an ICL trunk between two devices, a
minimum of two QSFPs within a port trunk group on a core blade installed in one
device must be connected to a pair of QSFPs within a trunk group on a core blade
in another device using ICLs.
Each CR32-8 blade on theSAN512B-6 has four ICL trunking groups consisting of
the following QSFP ports.
v 0, 1, 8, and 9
v 2, 3, 10, and 11
v
4, 5, 12, and 13
v 6, 7, 14, and 15
Ports belonging to the same trunking groups are indicated with the same color
border under the ports on the blade faceplate. These colors are also applied to the
port map labels on each blade faceplate to indicate ports belonging to the same
trunking groups.
Chapter 8. Core Routing Blades
119