Medias Mediatrix 1204, Справочное руководство

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Firmware Download Reference Manual (SIP Version)
Mediatrix 1204 63
In this case, the Mediatrix 1204 tries to contact the primary image server. As it is not available, the Mediatrix
1204 retries for two minutes. It contacts the secondary server after that period and starts the firmware
download.
Firmware Downgrade
It is possible to downgrade a Mediatrix 1204 from the current version (for instance, v5.0rx.x) to an older version
(for instance, v4.4rx.x).
X
To perform a firmware downgrade:
1. Create, in a common folder under the TFTP root path, the current (for instance, v5.0) and older (for
instance, v4.4) applications folders.
2. Re-update the Mediatrix 1204 with the current application.
The Mediatrix 1204 runs the current firmware version (v5.0rx.x).
3. Perform the firmware downgrade to the older application (v4.4rx.x) as described in “Firmware
Download Procedure” on page 59 .
Emergency Firmware Procedure
If the firmware download is suddenly interrupted, it may not be complete. Without any protection against this
situation, the Mediatrix 1204 is not functional.
A transfer may be interrupted for the following reasons:
An electrical shortage.
The user of the Mediatrix 1204 can accidentally power off the unit.
Depending on the moment when the firmware download has been interrupted, the emergency firmware
procedure (also called rescue application) can automatically start a new firmware download to repair the
firmware if it has been corrupted by the interruption. However, there is a small but critical time frame during
which unrecoverable errors could happen. This is why it is very important that the unit is not turned off during
firmware downloads.
Using the Emergency Firmware
When the emergency firmware procedure starts, the following steps apply:
1. The Mediatrix 1204 tries to initiate the firmware download with the primary firmware server.
2. If the firmware download fails with the primary firmware server, the Mediatrix 1204 tries to initiate
the firmware download with the secondary firmware server.
3. If the primary and the secondary servers cannot be reached, the Mediatrix 1204 tries two default
servers: 192.168.0.10 and then 192.168.0.2.
If, for some reason, it is impossible to rescue the unit by using the primary and secondary servers,
setting up a server at one of these addresses within the correct subnet will provide an ultimate way
to rescue the unit. However, if these addresses cannot be reached from the unit’s subnet, the
default gateway must provide appropriate routing to them.
4. If the firmware download also fails with the two default servers, the Mediatrix 1204 idles for one
minute.
5. After this one minute, the Mediatrix 1204 tries to initiate the firmware download again.
6. If the firmware download fails again with the primary, secondary, and default firmware servers, the
Mediatrix 1204 idles for two minutes before attempting to initiate the firmware download.
Note:
When using the Mediatrix 1204, Mediatrix recommends to disable the Spanning Tree Protocol on the
network to which the unit is connected.
Note:
If you perform a default reset on the Mediatrix 1204, you must download the current version into the
unit before performing the firmware downgrade procedure.