ICN Replacement

The following table navigates ICN replacement procedure and shows necessity of VRE OS Disk for VRE config

Table 1. ICN Replacement
Replacement Type	IB1 Software	IB2 Software	IB3 Software
ICN Replacement (From 4100 to 4100)	VRE OS Disk not Required	VRE OS Disk not Required	VRE OS Disk not Required
ICN Replacement (From 4100 to 4170)	Not Supported. Please install M4 software before this replacement.	VRE OS Disk not Required	VRE OS Disk not Required
ICN Replacement (From 4170 to 4170)	Not Supported	VRE OS Disk not Required	VRE OS Disk not Required
ICN Replacement (From 4100 to 4170 M2)	Not Supported	Not Supported	VRE OS Disk not Required
ICN Replacement (From 4170 to 4170 M2)	Not Supported	Not Supported	VRE OS Disk not Required
ICN Replacement (From 4170 M2 to 4170 M2)	Not Supported	Not Supported	VRE OS Disk not Required