Planning The Cabling Scheme - HP 5120 EI Series Installation Manual

Table 12 Physical IRF port requirements
Switch chassis
5120 EI switches
(excluding the 5120-24G
EI and the 5120-48G EI)
5120 SI switches

Planning the cabling scheme

Planning the cabling scheme for a 5120 EI IRF fabric
If 2-port interface cards are used and the IRF links are not aggregate, follow these guidelines on
connecting two neighboring 5120 EI switches:
You can connect the interface card in slot 1 (MOD 1) on a member switch to the MOD 1 or MOD
•
2 card on its neighboring switch.
Connect the left port on one interface card to the right port on the other interface card, as shown in
•
Figure
Figure 81 Use 2-port interface cards to set up single-link IRF connection
Candidate physical
IRF ports
Ports on the expansion
interface cards on the
rear panel
All network ports
81.
Requirements
•
You must order interface cards separately. For
long-distance connections, use XFP or SFP+
transceiver modules and fibers. For short-distance
connections, use CX4 or SFP+ cables. For more
information, see
5120 EI switches)" and
transceiver modules and SFP+/CX4 cables (only
for the 5120 EI
•
Ports assigned to the same IRF port must be on the
same interface card.
•
All 5120 EI switches in a ring topology and the
non-edge switches in a daisy chain topology must
have at least one two-port interface card or two
one-port interface cards.
HP recommends that you use Gigabit SFP ports and
HP A3600 Switch SFP Stacking Kit cables for IRF
connection.
For more information, see
and SFP Stacking Kit (only for the 5120 SI
57
"Interface cards (only for the
"SFP/SFP+/XFP
switches)."
"SFP transceiver modules
switches)."