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

Figure 39 IRF fabric in ring topology
1
2
3
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.
The HP 5920 and 5900 series switches do not have any IRF port binding restriction. You can bind any
SFP+ or QSFP+ port on the switch chassis to any IRF port.

Planning the cabling scheme

Use SFP+/QSFP+ cables or SFP+/QSFP+ transceiver modules and fibers to connect the IRF member
switches. If the IRF member switches are far away from one another, choose the SFP+/QSFP+ transceiver
modules with optical fibers. If the IRF member switches are all in one equipment room, choose
SFP+/QSFP+ cables. For more information available SFP+/QSFP+ cables and transceiver modules, see
"SFP+ port" and "QSFP+ port."
The following subsections describe several HP recommended IRF connection schemes, and all these
schemes use a ring topology.
Connecting the IRF member switches in one rack
Use short-haul and long-haul SFP+ cables to connect the IRF member switches (four switches in this
example) in a rack as shown in
same order as connected in the rack.
IRF-port1 IRF-port2
1
IRF-port1
IRF-port2
2
Figure
IRF-port1
3
40. The switches in the ring topology (see
35
Figure 41) are in the