Maintenance Manual

Viewing and deleting existing IP routes
Configured routes are listed below the Add IP route section in a separate section each for IPv4 and IPv6. For each
route, the following details are shown:
■ Destination: The IP address or address block that the route applies to.
■ Gateway: The IP address of the gateway where matching packets will be routed through. This can be - if
the destination is in the local subnets, the IP address of a default gateway of a particular network interface, or
the IP address of a user specified gateway.
■ Port: Physical network interface that matching packets will be sent through.
■ Type: Whether the route has been configured automatically as a consequence of other settings, or added by
the user as described above.
The default route is configured automatically in correspondence with the Default gateway preference field (see Port
preferences) and cannot be deleted. Any packets not covered by manually configured routes will be routed according
to this route.
Manually configured routes may be deleted by selecting the appropriate check box and clicking Delete selected.
Routes Behavior with Disabled Ports
If you disable the Ethernet port that is currently specifying the default gateway, then there is no default gateway and
the only destinations that are reachable are those that are either on the same subnet as the enabled Ethernet port or
are covered by an explicit route that uses that port.
Similarly, if you disable the Ethernet port that is used by an explicit route, then destinations that are covered by that
route cease to be reachable.
Note: Be very careful when changing routing as it is possible make the MCU unreachable from your PC (or any device
used to connect to the web interface). You need to ensure that at all times one of the following is true:
■ The MCU has an enabled interface on the same subnet as the PC.
■ The MCU has an explicit route that includes the PC's address and goes through an enabled interface.
■ The MCU does not have an explicit route that includes the PC's address but does have a default route through
an enabled interface that reaches the PC.
Related Topics
■ Configuring DNS settings
■ Configuring network settings
■ Configuring IP services
■ Configuring SNMP settings
■ Upgrading and backing up the MCU
■ Network connectivity testing
Configuring IP Services
To configure IP services, go to Network>Services.
Use this page to control the type of services that may be accessed via Ethernet ports A and B. For example, if one
Ethernet port is connected to a network outside your organization's firewall, you can restrict the level of access that
external users are entitled to on that port by, for example, enabling HTTPS for IPv4 and IPv6.
To prevent accidental lock-outs, the system does not allow you to disable the service that is currently being used to
administer the MCU. For example, if you are configuring the gateway over HTTP and coming in on Port A, then the
option to change the HTTP service for Port A will be unavailable in the interface.
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