Reboot when changing Unity iscsi port subnet mask while service is running?

Model : Unity300H

I want to change only the subnetmask as in the example below.
ex)

service@(none) spa:~> uemcli /net/if -type iscsi show -output csv
Storage system address: 127.0.0.1
Storage system port: 443
HTTPS connection

"ID","Type","NAS server","Port","VLAN ID","IP address","Subnet mask","Gateway","IPv4 mode","IPv4 address","IPv4 subnet mask","IPv4 gateway","IPv6 mode","IPv6 address","IPv6 gateway","SP","Preferred

"if_8","iscsi","","spb_eth4","","1.1.1.2","255.255.255.0","1.1.1.5","","1.1.1.2","255.255.255.0","1.1.1.5","","","","spb",""
"if_7","iscsi","","spa_eth4","","1.1.1.1","255.255.255.0","1.1.1.5","","1.1.1.1","255.255.255.0","1.1.1.5","","","","spa",""

 

First question) Is it ok to change like this?

spa > uemcli /net/if -id if_8 set -netmask 255.255.0.0

spb > uemcli /net/if -id if_7 set -netmask 255.255.0.0

 

Second question) If only the subnetmask is changed, will a reboot occur?