Planning The Cabling Scheme - HP FlexFabric 5950 Series Installation Manual

range, the ports are grouped by port number in order, starting from the lowest number. Each
group contains four ports.
•
On an LSWM124TG2H (JH450A) module, the ports numbered 1 to 24 are grouped by port
number in order, starting from the lowest number. Each group contains four ports.
•
On an LSWM116Q module (JH405A), the ports are grouped by port number in order, starting
from 1. Each group contains two ports.
•
The four 25-GE breakout interfaces of a 100-GE port are in one port group. To split a 100-GE
port, use the using twenty-fivegige command.
•
Except the LSWM116Q module, if you use a 40-GE or 100-GE port that is not split for IRF links,
no grouping restrictions exist.

Planning the cabling scheme

You can use QSFP28/QSFP28 to SFP28/QSFP+/SFP28 cables, or QSFP28/QSFP+/SFP28
transceiver modules and fibers to connect the HPE switches for IRF connections.
If the switches are all in one equipment room, choose QSFP28/QSFP28 to SFP28/QSFP+/ SFP28
cables for IRF connections. If the switches are far away from one another, choose
QSFP28/QSFP+/SFP28 transceiver modules and fibers for IRF connections.
For more information about cables, see
The following subsections describe several IRF connection schemes by using the QSFP28 cables
and QSFP28 transceiver modules and fibers. As a best practice, use the ring topology for IRF
connections.
Connecting the IRF member switches in one rack
Figure 48 shows an example for connecting four IRF member switches in a rack. The switches in the
ring topology (see
Figure 48 Connecting the switches in one rack
1
2
3
4
"Appendix C Ports and
Figure 49) are in the same order as connected in the rack.
LEDs."
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