Configure the Resiliency
List (MiNet Fallback Addresses)
When a MiNET 53xx device powers on or reboots, it will attempt
to reach a TFTP server to obtain new firmware. Once connected to a TFTP
server, the set downloads and installs new software if required. When
the download attempt is complete, the set then attempts to connect to
an MBG, searching for nodes as follows:
Resiliency List—If the
device has previously connected to MBG and received the Resiliency
List (programmed using this procedure), it will search the list from
top to bottom to obtain a connection.
Teleworker IP—If the device
has a Teleworker IP address (programmed by pressing 7 key on bootup
on most phones), it will use it to obtain a connection.
DHCP—If all other connection
methods fail, the device will attempt to obtain a connection from
DHCP.
The Resiliency List of MiNET fallback addresses is optional.
If you do not configure it, the devices will use the values they have
been programmed with or obtain an address from DHCP.
The Resiliency List supports the following features:
Up to four node addresses can be configured.
Node addresses can be in IPv4 or IPv6 format.
Node addresses can be for any
MBG, not just local MBGs. However, in a clustered environment, the
addresses should be for nodes in the device's own cluster zone.
Devices search the list from top to bottom (first to
fourth node) until a connection is made.
This feature is useful if you need to configure failover addresses.
For example, if your enterprise is switching service providers, program
a Resiliency List that contains MBG's current IP address plus the one
that you will be using with the new provider. Then reset
the devices in order to have them download these values. When the switchover
to the new service provider occurs, the devices will attempt to connect
to the original address and fail, and then try to connect to the new address
and succeed. After completing this process, you can remove the original
address from the Resiliency List.
Note:
When changes are made to the resiliency list on
MBG, the sets will receive the updates to store in FLASH memory
the next time they reboot.
The Resiliency List is only available for use by
53xx Series MiVoice IP Phones with FLASH memory. Other device
types cannot make use
of the Resiliency List.
In a clustered environment, Mitel recommends populating
the Resiliency List with nodes in the device's own cluster zone.
If the cluster is spread across a subnet boundary, include nodes
from each subnet to prevent a single point of failure.
The Resiliency List can be used without clustering.
To configure the Resiliency List:
On the MBG main page, click the Network
tab and click MiNet fallback addresses.
For each of the four “boot” MBG IP addresses, do the
following: