Identifying Physical Irf Ports On The Member Switches; Planning The Cabling Scheme - HP 5920 Switch Series Installation Manual

Figure 34 IRF fabric in ring topology
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IRF-port2

Identifying physical IRF ports on the member switches

Identify the SFP+ or QSFP+ ports to be used for IRF connections on the member switches according to
your topology and connection scheme.
All the SFP+ and QSFP+ ports on the HP 5900AF-48XG-4QSFP+, 5900AF-48XG-4QSFP+ TAA,
5900CP-48XG-4QSFP+, 5900CP-48XG-4QSFP+8Gb FC B-F, and 5900AF-48G-4XG-2QSFP+ switches,
all the 1/10-GE Ethernet ports and QSFP+ ports on the HP 5900AF-48XGT-4QSFP+ switch, and all the
SFP+ ports on the HP 5920AF-24XG and 5920AF-24XG TAA switches can be used for IRF connections.
Follow these guidelines when you identify 1/10-GE Ethernet ports and SFP+ ports to be used for IRF
connections:
• On the HP 5920AF-24XG, 5920AF-24XG TAA, 5900CP-48XG-4QSFP+,
5900CP-48XG-4QSFP+8Gb FC B-F, 5900AF-48XG-4QSFP+, and 5900AF-48XG-4QSFP+ TAA
switches, the SFP+ ports are grouped by port number in ascending order, starting from one. Every
four SFP+ ports form one group.
On the HP 5900AF-48G-4XG-2QSFP+ switch, SFP+ ports numbered 49, 50, 51, and 52 form one
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group.
On the HP 5900AF-48XGT-4QSFP+ switch, the 1/10-GE Ethernet ports are grouped by port
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number in ascending order, starting from one. Every four 1/10-GE Ethernet ports form one group.
All 1/10-GE Ethernet ports and SFP+ ports in the same group must be used for the same purpose
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(physical IRF ports or service ports, but not both).
A common practice is to use one 1/10-GE Ethernet port or SFP+ port group for IRF connections, and
bind every two 1/10-GE Ethernet port or SFP+ ports in the group to an IRF port for increased bandwidth
and availability.

Planning the cabling scheme

For the HP 5920AF-24XG, 5920AF-24XG TAA, 5900AF-48XG-4QSFP+, 5900AF-48XG-4QSFP+ TAA,
5900CP-48XG-4QSFP+, 5900CP-48XG-4QSFP+8Gb FC B-F, and 5900AF-48G-4XG-2QSFP+ switches,
use SFP+/QSFP+ cables or SFP+/QSFP+ transceiver modules and fibers to connect the IRF member
IRF-port1 IRF-port2
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IRF-port1
IRF-port2
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IRF-port1
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