Match a compact four-port installation to the BRS20-4TX-2A feature set with Hirschmann BRS20-04009999-STCY99HHSEAXX.X.XX
Hirschmann BRS20-04009999-STCY99HHSEAXX.X.XX identifies the four-port BRS20-4TX-2A managed Fast Ethernet configuration. Alongside four 10/100BASE-TX RJ45 ports, the documented software functions include additional security and diagnostic capabilities. The hardware uses a PC-ABS housing, is specified for 0 to +60 °C operation and has a listed consumption of 5 W. This version should be selected by its full code and required feature set, rather than treated as interchangeable with every four-port BRS20 device.
Start the security review with the addressing plan
The catalog lists DHCP snooping, Dynamic ARP Inspection and IP Source Guard among the expanded security functions. Evaluate these with the network addressing scheme, including the treatment of statically addressed equipment and infrastructure connections. Before enforcing a policy, verify that authorized management access remains available. The configuration should reflect the actual devices and procedures at the site. A feature being supported does not mean it is enabled or already suitable for every connected controller or service workstation.
Define how the additional diagnostics will be used
Email notification, RSPAN and SFLOW appear in the documented diagnostics alongside cable testing, link monitoring and mirroring. Decide which monitoring systems or service procedures will consume that information. Establish a normal operating baseline and identify the events that require attention. This turns the available functions into a practical maintenance process. Retain the settings with Hirschmann BRS20-04009999-STCY99HHSEAXX.X.XX so that a future replacement or software review can preserve the monitoring behavior expected by the site.
Hirschmann product reference image. The pictured model may differ from the specified configuration.
Technical specifications
| Brand | Hirschmann |
|---|---|
| Catalog Type | BRS20-4TX-2A |
| Product code | BRS20-04009999-STCY99HHSEAXX.X.XX |
| Part Number | 942170103 |
| Port Type and Quantity | 4 Ports in total: 4x 10/100BASE TX / RJ45 |
| Operating Voltage | 2 x 12 VDC ... 24 VDC |
| Power Consumption | 5 W |
| Operating temperature | 0 to +60 °C |
| Housing | PC-ABS |
| Dimensions (WxHxD) | 57 mm x 138 mm x 115 mm |
| Weight | 380 g |
| Mount Type | DIN Rail |
| IP Protection Rating | IP30 |
Check authentication and software requirements explicitly
The expanded security list also includes LDAP, a TACACS+ client, time-based ACLs and MACSec support. Required functions should be written into the project specification and confirmed against the supplied software and peer equipment. In particular, supported encryption is not evidence that an encrypted link is active. Coordinate the required configuration before commissioning. Keep access-control and authentication requirements precise enough that the offered 2A configuration can be checked without relying on a broad description such as a secure switch.
Additional management and redundancy options
The 2A configuration lists an OPC-UA server among its management functions. Its redundancy list also includes MSTP, a Sub Ring Manager and MRP over Link Aggregation, in addition to the basic options. Treat any required function as an explicit engineering requirement and check its use with the surrounding equipment. HTTPS, SSHv2, SNMP and LLDP remain available management tools. Record the supplied software information and the functions accepted during commissioning so that later service work preserves the intended capabilities of this exact four-port configuration.
Compact hardware with a configuration-specific identity
The four-port unit measures 57 × 138 × 115 mm and weighs 380 g. Allocate space for cabling and service access in addition to the enclosure dimensions, and assess the IP30 protection in the context of the panel. Include all inter-switch connections in the four-port count. For quotation or replacement, provide Hirschmann BRS20-04009999-STCY99HHSEAXX.X.XX, part number 942170103 and the mandatory software functions. Preserve the approved configuration and software information after acceptance so the intended behavior can be reproduced.
Acceptance should cover the required features
Test the functions named in the project specification, not only basic packet forwarding. Confirm that authentication, monitoring and management work with the selected peer systems, then preserve the approved configuration and software details. Keep the test record linked to Hirschmann BRS20-04009999-STCY99HHSEAXX.X.XX and part number 942170103. This is particularly useful for a 2A replacement, where an identical number of ports does not establish an identical documented software feature set.
Configuration handling for the 2A variant
USB-C management support and XML-based configuration files are included in the configuration functions. Automatic configuration undo and remote backup when saving are also documented. Use a controlled record of accepted settings so that access-control changes and monitoring changes can be traced to the installed version. Before relying on a restoration procedure, check it with the actual supplied software and the site requirements. Label the approved file with the complete 2A Product code. Identify any service cable or adapter needed for local administration separately from the basic switch order. Keep a dated record of accepted configuration changes.
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