Installation guide

32
• On the HP 5900AF-48G-4XG-2QSFP+ and 5900AF-48G-4XG-2QSFP+ TAA switches, SFP+ ports
numbered 49, 50, 51, and 52 form one group.
• On the HP 5900AF-48XGT-4QSFP+ and HP 5900AF-48XGT-4QSFP+ TAA switches, the 1/10-GE
ports are grouped by port number in ascending order, starting from one. Every four 1/10-GE ports
form one group.
A common practice is to use one 1/10-GE port or SFP+ port group for IRF connections, and bind every
two 1/10-GE port or SFP+ ports in the group to an IRF port for increased bandwidth and availability.
Planning the cabling scheme
Follow the cabling schemes described in Table 9 to connect IRF member switches.
Table 9 Cabling schemes
Switch model Cabling scheme Remarks
• HP 5920AF-24XG
• HP 5920AF-24XG TAA
• HP 5900AF-48XG-4QSFP+
• HP 5900AF-48XG-4QSFP+ TAA
• HP 5900CP-48XG-4QSFP+
• HP 5900CP-48XG-4QSFP+ TAA
• HP 5900CP-48XG-4QSFP+8Gb FC
B-F
• HP 5900AF-48G-4XG-2QSFP+
• HP 5900AF-48G-4XG-2QSFP+ TAA
• SFP+/QSFP+ DAC cables
• SFP+/QSFP+ transceiver
modules and fibers
If the IRF member switches
are far away from one
another, choose the
SFP+/QSFP+ transceiver
modules with optical fibers.
If the IRF member switches
are all in one equipment
room, choose twisted
pair/SFP+/QSFP+ DAC
cables. For more
information about available
SFP+/QSFP+ DAC cables
and transceiver modules,
see "SFP+ port" and
"QSFP+ port."
• HP 5900AF-48XGT-4QSFP+
• HP 5900AF-48XGT-4QSFP+ TAA
• Twisted pair cables
• QSFP+ DAC cables
• QSFP+ transceiver modules and
fibers
The following subsections describe several HP recommended IRF connection schemes, and all these
schemes use a ring topology.
Connecting the IRF member switches in one rack
Use SFP+ DAC cables to connect the IRF member switches (four switches in this example) in a rack as
shown in Figure 30. T
he switches in the ring topology (as shown in Figure 31) are in the same order as
connected in the rack.