Troubleshooting The Static Routes Table; Network Address Translation Support - AudioCodes Mediant 4000 SBC User Manual

CHAPTER 13 Network

Troubleshooting the Static Routes Table

When adding a new static route to the Static Routes table, the added rule passes a validation test.
If errors are found, the static route is rejected and not added to the table. Failed static route
validations may result in limited connectivity (or no connectivity) to the destinations specified in the
incorrect static route. For any error found in the Static Routes table or failure to configure a static
route, the device sends a notification message to the Syslog server reporting the problem.
Common static routing configuration errors may include the following:
■ The IP address specified in the 'Gateway' field is unreachable from the IP network interface
associated with the static route.
■ The same destination has been configured in two different static routing rules.
■ More than 30 static routes have been configured.
If a static route is required to access OAMP applications (for remote management, for
example) and the route is not configured correctly, the route is not added and the device
is not accessible remotely. To restore connectivity, the device must be accessed
locally from the OAMP subnet and the required routes be configured.

Network Address Translation Support

Network Address Translation (NAT) is a mechanism that maps internal IP addresses (and ports)
used within a private network to global IP addresses and vice versa, providing transparent routing
to end hosts. The primary advantages of NAT include (1) reduction in the number of global IP
addresses required in a private network (global IP addresses are only used to connect to the
Internet) and (2) better network security by hiding the internal architecture.
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Mediant 4000 SBC | User's Manual