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: