- - total number {Y} of service chains ``{Y}ch``,
- - total number of chains being reconfigured ``1ach``,
- - total number of vhost-user interfaces forwarding packets on VPP with {Y}
- chains and {X} VMs per chain ``{2XY}vh`` (2 interfaces per {X} VMs per {Y}
- chains),
- - total number {XY} of VNF VMs forwarding packets ``{XY}vm`` and finally
+ - total number {Y} of initial service chains ``{Y}ch``,
+ - total number of additional chains being reconfigured ``1ach``,
+ - total number of initial vhost-user interfaces forwarding packets
+ on VPP with {Y} chains and {X} VMs per chain ``{2XY}vh``
+ (2 interfaces per {X} VMs per {Y} chains),
+ - total number {XY} of (both initial and final) VNF VMs forwarding packets
+ ``{XY}vm`` and finally