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You can provide the following IRF physical connections between
HPE FlexFabric 5940
switches:
•
10-GE IRF physical connection by connecting 10GBase-T Ethernet ports or SFP+ ports.
•
40-GE IRF physical connection by connecting QSFP+ ports.
•
100-GE IRF physical connection by connecting QSFP28 ports.
•
IRF physical connection by using a 40G QSFP+ to 4 x 10G SFP+ cable to connect a QSFP+
port and four SFP+ ports.
You can bind several ports to an IRF port for increased bandwidth and availability.
Identifying physical IRF ports on the member switches
Identify the 10GBase-T Ethernet ports, SFP+ ports, QSFP+, and QSFP28 ports to be used for IRF
connections on the member switches according to your topology and connection scheme.
All the 10GBase-T Ethernet ports, SFP+ ports, QSFP+ ports, and QSFP28 ports on the
HPE
FlexFabric 5940
switch can be used for IRF connections, except for QSFP28 ports on the
LSWM18CQMSEC interface module (JH957A).
Planning the cabling scheme
You can use twisted pair cables, SFP+/QSFP+/QSFP28 cables, or SFP+/QSFP+/QSFP28
transceiver modules and optical fibers to connect the switches for IRF connections. If the IRF
member switches are far away from one another, choose the SFP+/QSFP+/QSFP28 transceiver
modules and optical fibers. If the IRF member switches are all in one equipment room, choose
twisted pair cables or SFP+/QSFP/QSFP28 cables. For more information about available
transceiver modules and cables, see "
The following subsections describe several IRF connection schemes recommended by Hewlett
Packard Enterprise. All these schemes use a ring topology.
Connecting the IRF member switches in one rack
shows an example for connecting four IRF member switches in a rack by using QSFP+
cables and QSFP+ transceiver modules and optical fibers. The switches in the ring topology
(see
) are in the same order as connected in the rack.
Figure 51 Connecting the switches in one rack
