Cisco D9054 Installation And Operation Manual page 222

Setting Up the IP Network,
6. The Encoder displays the MAC Address of the two IP ports and the
Management interface. These are read-only fields.
7. If relevant, enable Allow Import.
Allow Import is applicable in redundant IP streaming (SSM) applications.
Checking this box allows the IP source address to be changed when the settings
file is imported as part of a redundancy switch. This is helpful in the event that
the main encoder fails as the backup encoder will appear as the main encoder
(with the same IP address) to downstream equipment. This does not require
resetting of the encoder(s).
8. Click Apply.
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D9054 HDTV Encoder Intstallation and Operation Guide 4038938 Rev A