Black Box Pro Switching System 4 Network Backup Switches Auto failover and manual recovery

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Chapter 5: Operation

To be able to perform the auto bypass and auto recovery switching functions, the switch issues ICMP echo request (PING) packets from its Ethernet network interface in order to determine if a path exists to an IP address specified during configuration of the switch automatic switching feature. If the “normal” network path connections between the switch and the device being moni- tored go down for any reason, the switch will no longer be able to PING the specified IP address, and will then automatically switch from the “normal” connection state (all COMMON ports connected to their respective B ports) to the “bypass” or “failover” connection state (all COMMON ports are connected to their respective A ports) by internally executing a “SET SYSTEM A” command. Once the problems on the primary path have been corrected, the user can issue a “SET SYSTEM B” command to cause the switch to switch from the failover connection state back to the normal connection state. Or if auto recovery is enabled, the switch will automatically re-connect the normal path connections (by internally executing a “SET SYSTEM B” command) when it is again able to PING the user specified IP address. When using the auto recovery feature, make sure the Ethernet network port on the switch is connected to the user’s network so that the normal path is continuously being monitored even when the backup path has been selected. Otherwise, the switch could repeatedly switch (flap) back and forth between the failed primary path and the functioning backup path. See the following diagrams for examples of auto switching configurations.

Figure 5-1. Auto failover and manual recovery.

NOTE: The switch monitors the WAN connections by PINGing the far side router through the primary WAN link. If the primary WAN link fails, the switch auto switches to the backup WAN link. Auto recovery is disabled in this configuration to prevent flapping.

Figure 5-2. Auto failover and auto recovery.

NOTE: The switch monitors the WAN connections by PINGing the far side router through the primary WAN link. If the primary WAN link fails, the switch auto switches to the backup WAN link. When the primary WAN link is available again, the switch auto switches back to the primary WAN path.

The monitorip address and monitormac address parameters used by the automatic switching feature on the switch can be configured to allow the switch to monitor connectivity to any device within or outside of the switch’s subnet. After you have entered the monitorip address, you can either manually enter the monitormac address or allow the switch to determine it automatically.

NBS008A

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Contents Pro Switching System 4 Network Backup Switches Trademarks Used in this Manual Trademarks Used in this ManualFCC and IC RFI Statements NOM Statement Table of Contents Specifications SpecificationsOverview Introduction OverviewWhat’s Included Available ModelsBack panel components Hardware DescriptionNBS008MA, NBSALL8, NBSALL8MGR, NBS016A, NBS016MA 16 17 Front Panel of NBS004A, NBS004MANBS006A, NBS006MA NBS006A, NBS006MA front panel components Front Panel of NBS006A, NBS006MAFront Panel of NBS008A, NBS008MA, NBSALL8, NBSALL8MGR Front Panel of NBS016A, NBS016MA Configuration ConfigurationDIP switch SW1 and SW2 settings RJ-11 GANG-OUT port pin assignment Installation InstallationOperation Manual SwitchingOperation Example Port 12 in rack 3 has port address Programming Programming Tips for Using the RS-232 Terminal CommandsBackground Getset Pingreply ON/OFF Getset Snmpenable ON/OFF R6000 Console CommandsGetset Alerttype TRAP/SYSLOG Getset Monitormac X X X X X X X = HEX CharsAuto failover and manual recovery Operation Ethernet Network Interface Setup Ethernet Network Interface Setup GET Version Console CommandsConsole Commands GET ALLSET Rack N AB GET Power NSET System AB GET Rack NSET Ipaddress GET Ipaddress SET Snmpenable Onoff GET SnmpenableSET Webenable Onoff GET Webenable GET WebpasswordGET Telnettimeout GET WebtimeoutSET Telnetenable Onoff GET Telnetenable GET TelnetpasswordSET Monitorfailcount N GET Monitorfailcount SET Authenticationtrap Onoff GET AuthenticationtrapSET Monitormac X X X X X GET Monitormac SET Monitorinterval N GET MonitorintervalSET Manager N SET Adminip NGET Adminip N GET AlerttypeGetset Webenable ON/OFF ResetSET Defaults R6000 Console Commands GETSET Save settings for next startupRestart use after Save Web Interface Web InterfaceWeb Interface MIB Path Summary and Trap Definitions MIB Path Summary and Trap DefinitionsAbRackKeyStat-1.3.6.1.4.1.9477.1.4.2.1.3.RackIndex AbRackGangPort-1.3.6.1.4.1.9477.1.4.2.1.2.RackIndexMIB Path Summary and Trap Definitions MIB Path Summary and Trap Definitions Syslog Messages Syslog MessagesSyslog Messages Blackbox.com Black Box Tech Support FREE! Live /7

NBS008A, Pro Switching System 4 Network Backup Switches specifications

The Black Box Pro Switching System 4 Network Backup Switches, specifically the NBS008A model, represents a cutting-edge solution for network resilience and management. This advanced device is designed to enhance network reliability by providing a seamless way to switch between primary and backup network links, ensuring continuous connectivity for critical applications.

One of the standout features of the NBS008A is its automatic failover capability. In the event of a link failure, the system swiftly transitions to a secondary connection without requiring manual intervention. This is crucial for businesses that rely on uptime, as it minimizes downtime and ensures that operations remain uninterrupted.

The device also supports a variety of network protocols, making it versatile for different network environments. It is compatible with Ethernet and other common standards, providing flexibility for integration into existing infrastructure. The NBS008A is equipped with multiple ports, allowing for connection to various devices and networks, and enabling redundancy across critical pathways.

In terms of management, the Black Box Pro Switching System features an intuitive user interface. Administrators can easily monitor the status of all connected links, configure settings, and access diagnostic tools to troubleshoot issues. This ease of use is essential for maintaining optimal network performance and quickly identifying any potential problems.

Moreover, the NBS008A incorporates advanced security features. It supports encryption and authentication protocols that protect against unauthorized access, ensuring that sensitive data is safeguarded during transmission. This security aspect is particularly important in today’s environment, where cyber threats are prevalent and organizations must prioritize data integrity.

The build quality of the NBS008A is robust, designed to withstand harsh operational conditions while maintaining high performance. Its compact form factor and rack-mountable design make it an efficient choice for various settings, whether in a data center or a smaller office environment.

Additionally, the NBS008A supports various network speeds, accommodating both legacy systems and modern high-speed networks. With its rich feature set, robust security measures, and reliable performance, the Black Box Pro Switching System 4 Network Backup Switches, NBS008A, is an invaluable asset for organizations seeking to enhance their network's reliability and efficiency.
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