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Hirschmann industrial networking portfolio image. Confirm the exact 942170008 configuration in the quotation.

The first trap: “Gigabit everywhere” is not the same as “no bottleneck”

Eight Gigabit interfaces increase per-port capacity, but traffic still converges. If multiple cameras, historians or high-rate controllers transmit through one upstream path, that path can become the real constraint. Before replacing a Fast Ethernet switch, map traffic direction, peak load, multicast behavior and oversubscription—not just cable speed.

A good migration asks four questions: Which ports generate bursts? Which port carries the aggregate? Is the application sensitive to latency or packet loss? Can the peer device really negotiate 1000BASE-T reliably on the installed cabling?

Verified configuration at a glance

Current manufacturer data also lists TSN 802.1Qbv support on interfaces 1/1–1/3. Confirm the current datasheet, firmware, approvals and exact application before purchase.

TSN is a system design, not a checkbox

Time-Sensitive Networking can help schedule critical traffic, but deterministic behavior depends on the complete path: end devices, time synchronization, queue configuration, traffic classes and every bridge between source and destination. Buying a TSN-capable switch is an important building block; it is not a substitute for an engineered schedule and validation test.

Five brownfield checks before upgrading from Fast Ethernet

1. Cabling: certify the installed copper channel for the intended Gigabit performance and industrial noise environment.

2. Peer ports: confirm speed, duplex and auto-negotiation behavior on older PLCs, drives and HMIs.

3. Traffic baseline: measure multicast, broadcast and burst traffic before the cutover.

4. Topology: identify the aggregate uplink and ensure it is not simply moving the bottleneck.

5. Configuration backup: record VLANs, QoS, redundancy, security and management settings before replacement.

When BRS40-8TX is the right fit—and when it is not

Choose 942170008 when the cabinet needs eight managed copper Gigabit ports, compact DIN-rail installation and no immediate fiber interface. If the design requires fiber uplinks, compare BRS40-8TX/4SFP or BRS30 variants rather than adding an unplanned media converter. If only Fast Ethernet is required and bandwidth growth is unlikely, a BRS20 configuration may be more aligned with the application.

Seven details for an accurate RFQ

1. Quote all three identifiers: BRS40-8TX, BRS40-00089999-STCY99HHSESXX.X.XX and 942170008.

2. State quantity, destination country and required delivery date.

3. List connected device types and required port speeds.

4. Describe VLAN, QoS, redundancy and TSN expectations.

5. Confirm power architecture, grounding and cabinet temperature.

6. Identify approvals or industry-specific compliance requirements.

7. Provide firmware, configuration-transfer and spare-unit expectations.

Frequently asked questions

Is BRS40-00089999-STCY99HHSESXX.X.XX the same item as 942170008?

Yes. Include the commercial model, full configuration and order number together in every RFQ to reduce identification errors.

Does BRS40-8TX include fiber ports?

No. This exact version provides eight copper RJ45 ports. Select a BRS variant with SFP slots when fiber uplinks are required.

Will 100 Mbit/s devices work on the Gigabit ports?

The ports are specified as 10/100/1000BASE-TX. Still verify the peer device, auto-negotiation, cable quality and project configuration.

Do you supply other Hirschmann BOBCAT BRS models?

Yes. The following requested models are currently hot-selling; availability and delivery are confirmed at RFQ time.

Hot-selling Hirschmann BOBCAT BRS portfolio

Hirschmann and BOBCAT are trademarks of their respective owner. Product names and numbers are used for identification. Final specifications, compatibility, availability and supply are governed by the confirmed quotation.