4-47
Figure4-3 IRF fabric in ring topology
You can set up IRF links between S6850/S9850 switches as follows:
•
Use a QSFP28 module and fiber or a QSFP28 cable to connect QSFP28 ports for a 100-GE
IRF physical connection.
•
Use a QSFP+ module and fiber or a QSFP+ cable to connect QSFP28 ports for a 40-GE IRF
physical connection.
•
Use a QSFP+ module and fiber or a QSFP+ cable to connect QSFP+ ports for a 40-GE IRF
physical connection.
You can bind several ports to an IRF port for increased bandwidth and availability.
When you use a QSFP+ DAC cable to connect a pair of peer IRF physical interfaces on S6850 or
S9850 switch series, follow these restrictions and guidelines:
•
The peer interfaces must both be fixed ports or both be ports on expansion interface modules
that are the same model.
•
If one interface is a fixed QSFP28 port on the rear panel of an S6850-2C switch, the other
interface must also be a fixed QSFP28 port on the rear panel of an S6850-2C switch.
Identifying physical IRF ports on the member switches
Identify the physical ports for IRF connections on the member switches according to your topology
and connection scheme.
All the QSFP28 ports and QSFP+ ports on the switches (including those on the interface modules),
can be used for IRF connections, except for QSFP28 ports on LSWM18CQMSEC interface
modules.
1
2
3
IRF-port2
IRF-port2
1
2
3
IRF-port1
IRF-port2
IRF-port1
IRF-port1