Dual WAN Out-of-Band Management for Juniper ACX2100 Series Industrial Routers

A Dual WAN Console Server can provide tech support personnel with additional options for Out-of-Band Management that aren’t generally available on console server products that include only one Ethernet Port. In addition to allowing remote access to console ports on routers and switches via both a primary, production network and a secondary, maintenance network, a Dual WAN Console server also simplifies the challenge of adding 3G/4G/LTE cellular broadband access and satellite broadband access to your out-of-band management solution.

An Out-of-Band Management solution provides IT personnel with an effective means to deal with problems at remote network equipment installations, even when normal network communication is down. By providing alternative channels for communication, an Out-of-Band Management solution allows NOC personnel to troubleshoot problems with remote devices in order to restore communication via the primary network without the costs and delays inevitably associated with a physical service call.

When the Out-of-Band Management solution includes a console server with two Ethernet Ports, (such as WTI’s DSM-E Series Dual WAN Console Servers,) a variety of different communication channels are available to access console port command functions on remote devices. For example, in addition to the dial-up access provided by conventional, single WAN console servers, a Dual WAN Console Server also allows out-of-band communication via secondary network, 3G/4G/LTE cellular broadband or satellite broadband. This provides a perfect fit for oil and gas industry applications where dial-up, POTS communication is often unavailable.


Your NOC is responsible for managing a series of refineries scattered across a wide geographical area. To cut the time required to respond to network emergencies at distant refineries, your IT support team needs to be able to access console port command functions on Juniper Industrial Routers and other networked elements at refineries via both a primary/production network and a secondary/maintenance network. In order to ensure that IT personnel will be able to communicate with devices at refineries during network outages, dial-up, out-of-band access to console port command functions on devices at refineries is also required.

Redundant Network Access plus Dial-Up Out-of-Band communication for Refinery Applications


A DSM-E Series Dual WAN Console Server is installed to provide support personnel with access to console port command functions at the remote network equipment site. The primary and secondary network cables are connected to the DSM-E’s primary and secondary 10/100/1000Base-T Ethernet Ports and a POTS line is connected to the DSM-E’s internal modem. The primary (production) network generally serves for in-band communication and the secondary (maintenance) network and dial-up connection provide out-of-band access.

When IT personnel at a centralized NOC need remote access to console ports on devices at the refinery, they can connect to the DSM-E Dual WAN Console Server via the primary or secondary 10/100/1000Base-T network; if network communication is down, your IT personnel can still access remote console ports via dial-up connection. If wireless communication is needed, then a 3G/4G/LTE WAN Gateway can be installed in place of the secondary network.


In addition to allowing in-band access to console port command functions on the router or switch, (such as Juniper’s ACX2100 Series Industrial Router,) via either primary network or secondary network and out-of-band access via dial-up, this configuration can also be used to provide remote access to other devices at the refinery. For example, if devices such as process controllers, leak detectors and intrusion detection systems are cable connected to the DSM-E Dual WAN Console Server, then remote support personnel can also access console port command functions on those devices.

When the DSM-E Dual WAN Console Server is deployed in an out-of-band management application, this also provides monitoring and alarm functions that can help to keep an eye on conditions and events at the remote site. The DSM-E includes a versatile assortment of alarms that can be used to track rack temperatures, power supply irregularities, unresponsive devices, lack of dial tone at the POTS line and other indications of potential trouble. In addition to providing notification when an alarm is triggered, the DSM-E can also create a log that records significant conditions and events, plus user account activity.


WTI’s DSM-E Series Dual WAN Console Servers provide the ideal out-of-band management solution for oil and gas industry applications and other network installations that demand high availability and minimal downtime. The presence of a second 10/100/1000Base-T Ethernet Port increases available out-of-band communication options by allowing the connection of a 3G/4G/LTE Wireless Gateway or Satellite Broadband Hub/Gateway in addition to a traditional network cable.

In addition to providing two 10/100/1000Base-T Ethernet Ports and support for dial-up communication, the DSM-E Dual WAN Console Server also includes state-of-the art security and authentication features to ensure that access to sensitive console port functions is well protected from unauthorized access. The DSM-E’s monitoring, alarm and event logging functions enable support personnel to track potentially significant events and conditions at remote sites, allowing your IT team to take a more proactive approach to management and anticipate future troubles rather than simply reacting to problems after they occur.