Planning The Cabling Scheme - H3C S5850 Series Instruction Manual

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 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 about SFP+/QSFP+ cables and SFP+/QSFP+
transceiver modules, see ports in Hardware Information and Specifications.
The following subsections describe several H3C recommended IRF connection schemes, and all
these schemes use a ring topology.
IMPORTANT:
In these schemes, all physical IRF ports are located on the same side. If physical IRF ports are on
different sides, you must measure the distance between them to select an appropriate cable.
Connecting the IRF member switches in one rack
Use SFP+ cables to connect the IRF member switches (9 switches in this example) in a rack as
shown in Figure4-4. The switches in the ring topology (see Figure4-5) are in the same order as
connected in the rack.
Figure4-4 Connecting the switches in one rack
1
2
3
4
5
6
7
8
9
4-4