In addition to being able to connect to devices, when the network is down Uplogix Local Managers continue to enforce security policies, log all changes and the results of those changes, and continuously monitor critical device statistics and user interactions.
Out-of-Band CategoriesUplogix uses two categories of out-of-band (OOB) methods to reach remote Local Managers:
- Phone home: When detecting an outage, the LM initiates a phone home connection automatically.
- Dial-in: A user manually connects to a remote LM via a secure dialer applet launched from the Uplogix Control Center (UCC.)
Here is a quick overview of how the various OOB methods work.
When the Uplogix Local Manager detects a network outage it will initiate an OOB connection in order to create an alternative path back to the NOC. A variety of technologies can be used to create the OOB connections including analog phone lines, cellular, DSL or alternate networks, and satellites.
The OOB connection allows the LM to resume communication to the Uplogix Control Center as well as other network monitoring tools.
Users will be alerted when the OOB connection is initiated and the UCC will display the LM’s new IP address. Users can connect to the OOB LM via SSH and will be authenticated as if the user were connecting via the in-band network.
A network administrator establishes a dial-in connection to the LM, usually due to an in-band connection failure. Then they log into the UCC and launch a secure dial-in applet for the desired LM. The applet runs on the user’s local workstation and establishes a TLS 1.0 encrypted serial connection to the LM over the OOB session.
If normal AAA passwords are not cached, the administrator will need to define a user and password in the UCC that will exist in case AAA server are not reachable. Once the administrator logs out of the LM, the encrypted connection between the user’s workstation and the LM is torn down.