The information sources that the User-ID agents query do not
count towards the maximum of ten
hops in the sequence.
However, Windows-based User-ID agents that forward mapping information
to firewalls do count. Therefore, in this example, redistribution
from the European region to all the data center firewalls requires
only three hops, while redistribution from the North American region requires
four hops. Also in this example, the top layer has two hops: the
first to aggregate information in one data center firewall and the
second to share the information with other data center firewalls.