HP A5120 EI Series Installation Guide

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Table 11 shows the physical ports that can be used for IRF connection, and the restrictions on port use.
Table 11 Physical IRF port requirements
Switch chassis
Candidate physical
IRF ports
Requirements
A5120 EI switches
(excluding the A5120-
24G EI and the A5120-
48G EI)
Ports on the expansion
interface cards on the
rear panel
 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 "Interface cards
(A5120 EI switches only)" and "SFP/SFP+/XFP
transceiver modules and SFP+/CX4 cables
(A5120 EI switches only)."
 Ports assigned to the same IRF port must be on
the same interface card.
 All A5120 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.
A5120 SI switches
All network ports
HP recommends that you use Gigabit SFP ports and
HP A3600 Switch SFP Stacking Kit cables for IRF
connection.
For more information, see "SFP transceiver modules
and SFP Stacking Kit (only for the A5120 SI
switches)."
Planning the cabling scheme
Planning the cabling scheme for an A5120 EI IRF fabric
If 2-port interface cards are used and the IRF links are not aggregate, follow these guidelines on
connecting two neighboring A5120 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 43.

HP A5120 EI Series Specifications

General

Brand	HP
Model	A5120 EI Series
Category	Switch
Language	English