CUCM and DHCP interaction

Answered Question
Jun 22nd, 2010
User Badges:

I've two questions about interaction between CUCM and DHCP server.


1. In a network with a CUCM, IP-Phones and a DHCP server:

  • if the DHCP server goes down, does the IP-Phones work?
  • if the DHCP server is replaced with another DHCP server, are there changes in the CUCM or in IP-Phones configuration?


2. Is there any interaction between DHCP server and CUCM?


Thanks

Correct Answer by Jonathan Schulenberg about 7 years 1 month ago
if the DHCP server goes down, does the IP-Phones work?

Yes until their lease expires. Then no.


if the DHCP server is replaced with another DHCP server, are there 
changes in the CUCM or in IP-Phones configuration?

No; however, there may be changes needed on the switches (ip helper) if the DHCP server is not in the local subnet.


Is there any interaction between DHCP server and CUCM?

Hopefully not. CUCM is capable of receiving it's IP addresses from DHCP but this is not recommended.

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
Loading.
Correct Answer
Jonathan Schulenberg Tue, 06/22/2010 - 07:49
User Badges:
  • Super Bronze, 10000 points or more
  • Cisco Designated VIP,

    2017 IP Telephony

if the DHCP server goes down, does the IP-Phones work?

Yes until their lease expires. Then no.


if the DHCP server is replaced with another DHCP server, are there 
changes in the CUCM or in IP-Phones configuration?

No; however, there may be changes needed on the switches (ip helper) if the DHCP server is not in the local subnet.


Is there any interaction between DHCP server and CUCM?

Hopefully not. CUCM is capable of receiving it's IP addresses from DHCP but this is not recommended.

Actions

This Discussion

Related Content