Would there be an outage if we modify the DHCP scope of an IP Subnet ...

[sanjay.nadarajah]

Hi,

I would need to modify the DHCP scope of an IP subnet for a voice subnet to add a DHCP option to it.

I would like to check that when I make the changes on the DHCP scope, would the phones connected to this subnet

have a slight downtime during the change ?

I tend to think there 'will not be' any downtime since I am not touching the DHCP lease obtained and expired for the scope.

What are your thoughts ?

Thank you,

Cheers,

- SN -

[Jon Marshall · Accepted solution]

sanjay.nadarajah wrote:
Hi,
I would need to modify the DHCP scope of an IP subnet for a voice subnet to add a DHCP option to it. 
I would like to check that when I make the changes on the DHCP scope, would the phones connected to this subnet 
have a slight downtime during the change ? 
I tend to think there 'will not be' any downtime since I am not touching the DHCP lease obtained and expired for the scope.
What are your thoughts ?
Thank you,
Cheers,
- SN -

SN

There should be no outage because as you rightly say the phones will already have received an IP with a lease.  However obviously the phones will need to renew their DHCP address to get the new option.

Jon