Identifying Physical Irf Ports On The Member Switches; Planning The Cabling Scheme - H3C S6890 Series Installation Manual

You can set up IRF links between S6890 switches as follows:
•
Use a QSFP28 module and fiber or a QSFP28 copper cable to connect QSFP28 ports for a
100-GE IRF physical connection.
•
Use a QSFP+ module and fiber or a QSFP+ copper cable to connect QSFP28 ports for a 40-GE
IRF physical connection.
•
Use an SFP+ module and fiber or an SFP+ copper cable to connect SFP+ ports for a 10-GE
IRF connection.
You can bind several ports to an IRF port for increased bandwidth and availability.

Identifying physical IRF ports on the member switches

Identify the QSFP28 and SFP+ ports for IRF connections on the member switches according to your
topology and connection scheme.
All the QSFP28 and SFP+ ports on the switch can be used for IRF connections.

Planning the cabling scheme

You can use QSFP28/QSFP+/SFP+ copper cables, or QSFP28/QSFP+/SFP+ transceiver modules
and fibers to connect the S6890 switches for IRF connections.
If the switches are all in one equipment room, use QSFP28/QSFP+/SFP+ copper cables for IRF
connections. If the switches are far away from one another, use QSFP28/QSFP+/SFP+ transceiver
modules and fibers for IRF connections.
For more information about available modules and cables, see
The following subsections describe several IRF connection schemes by using the QSFP28 copper
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 33 shows an example for connecting four IRF member switches in a rack. The switches in the
ring topology (see
Figure 33 Connecting the switches in one rack (S6890-54HF)
Figure 34) are in the same order as connected in the rack.
"Appendix C Ports and
27
LEDs."