Cisco IEM-3300-8P 8-Port PoE Expansion Module

IEM-3300-8P: Cisco IEM-3300 eight-port PoE/PoE+ expansion module for IE3300 and IE3400

The IEM-3300-8P (spare order code IEM-3300-8P=) is an expansion module that adds eight Gigabit copper ports with PoE/PoE+ to a Cisco Catalyst IE3300 or IE3400 PoE base switch. Seven Star LLC supplies IEM-3300-8P in Oman and the GCC as an independent supplier based in Muscat, not affiliated with the manufacturer.

It is the smaller of the two PoE modules and the usual choice when a cabinet needs a few more powered ports without the extra width of a 16-port module. The datasheet shows that it increases the PoE budget of the system, from 240 W on the base to 360 W on IE3300 PoE bases with the Gigabit uplinks, and from 240 W to 480 W on the IE3400 PoE base.

Decoding the part number IEM-3300-8P

The module number follows the series naming. The table reads each element of IEM-3300-8P and shows the other values used across the IEM-3300 range.

IEM-3300-8P technical specifications

How the IEM-3300-8P behaves in the network

The module behaves as an extension of the base switch’s backplane: the ports are managed in the same software image, the same VLAN and security policy applies, and traffic between base and module ports is switched internally. There is no separate IP address or management plane for the module.

The module adds PoE ports and also carries part of the budget. The datasheet states that PoE modules can only be plugged into a PoE base, and that the total PoE budget of the system is limited by the external supply wattage. When the module is added to a base that already has eight PoE ports, the cabinet has sixteen powered ports sharing a budget of 360 W or 480 W, so port count rises faster than power.

Where IEM-3300-8P fits: compatible and related parts

The IEM-3300-8P works with the IE3300 PoE bases and with the IE3400 PoE base. For a larger cabinet, IEM-3300-16P= gives sixteen PoE ports in a wider body, and IEM-3400-8P= is the IE3400-generation eight-port PoE module. The datasheet notes that using IEM-3300 modules on an IE3400 base prevents the advanced SGT and SGACL security feature on that base, so a TrustSec design should use IEM-3400 modules.

Selection and ordering checklist for IEM-3300-8P

• Check the base: PoE modules need a PoE base switch, never a non-PoE base.
• Decide between IEM-3300-8P and IEM-3400-8P if the base is an IE3400 and TrustSec features are planned.
• Recalculate the DIN rail supply for the base, this module (14 W) and the connected PoE devices.
• Confirm cabinet rail length for the extra module width.
• Decide whether a 16-port module fits the port plan better.

Installation, commissioning and maintenance

The IEM-3300-8P attaches to the side of a compatible base switch on the same DIN rail and becomes part of one logical switch with the base. The datasheet notes that single-wide modules add 2 in to the system width and double-wide modules add 3 in, so measure the cabinet rail before ordering and leave room for the whole stack. Position the module on the side the base expects, and do not forget that a PoE module increases heat dissipation in the cabinet.

After installation, confirm in the switch software that the module is recognised and that its ports come up with the expected speed and PoE state. Keep the ports on the module in the same VLAN plan as the base ports, and document which ports are on the module, since field staff will see them numbered separately from the base. For maintenance, a module is a field replaceable unit: keep one spare per site type and check its port LEDs and counters during routine rounds.

Power the combined stack from a supply sized for the base, the module consumption listed in the datasheet and any PoE load. If the supply is undersized, the stack will not deliver its rated PoE budget, so recalculate whenever a module is added.

Typical applications in Oman and the GCC

The IEM-3300-8P suits cameras and access points that were added to an existing cabinet after commissioning. In an oil and gas plant it can extend a perimeter camera cabinet by eight powered ports without replacing the base switch.

In a power station or substation annex, the module lets one cabinet power IP phones, door controllers and wireless access points for a control building, while the base keeps its two fiber uplinks for the ring.

IEM-3300 expansion modules compared

Information to send with an RFQ for IEM-3300-8P

A short enquiry lets us confirm the exact part number, the software license and current availability without a second round of questions. Please include:

• Part number IEM-3300-8P and quantity, noting that the spare version of the part ends with an equals sign
• The base switch it will attach to (IE-3300 or IE-3400 model, license -E or -A)
• Base switch model and license, to confirm PoE capability
• Number of PoE devices and their class power
• Delivery location and the project date

Documents and quotation

A datasheet for the Cisco Catalyst IE3300 Rugged Series is attached on this page. It lists the hardware configurations, power inputs, software feature sets and compliance tables that the specification table above summarises.

Seven Star LLC supplies IEM-3300-8P in Oman and the GCC as an independent supplier based in Muscat, not affiliated with the manufacturer. Share your quantity, delivery location and project timeline, and we will reply with availability and lead time for the IEM-3300-8P.