Operation Manual

Startup
A31003-C1000-M102-9-76A9, 08/2018
30 OpenScape Desk Phone CP100/200/CP205/CP400/CP600/600E HFA, Administration Manual
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Quick Start
2.3.5 DHCP Resilience
Prerequisites
It is possible to sustain network connectivity in case of DHCP server failure. If DHCP lease re-
use is activated, the phone will keep its DHCP-based IP address even if the lease expires. To
prevent address conflicts, the phone will send ARP requests in 5 second intervals. Additionally,
it will send discovery messages periodically to obtain a new DHCP lease.
Step by Step
In the left column, select Network > IPv4 configuration. Select the check box to enable DHCP
lease reuse.