Permanent — The IP address, obtained dynamically from the
•
switch, is owned by the client permanently (unless changes in the
network environment/connections take place, for any reason).
•
Dynamic — The IP address, obtained dynamically from the
switch, is owned by the client for a specified period of time. The
IP address is revoked at the end of this period, at which time the
client must request another IP address.
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Dell PowerConnect 55xx Systems User Guide