Example using routergroups:

<config>
	<definesets>
		<defineset name="Common Services">
			<application name="web">80/tcp,8080/tcp</application>
			<application name="secureweb">443/tcp</application>
			<application name="mailreading">110/tcp,143/tcp</application>
			<application name="windows">137-139/tcp,137-139/udp,42/tcp,135/tcp,445/tcp</application>
			<application name="dns">53/udp,53/tcp</application>
			<application name="netflow">2055/tcp,2055/udp</application>
			<services>22-23/tcp,25/tcp,102/tcp,119/tcp</services>
			<protocols>tcp,udp,icmp</protocols>
			<otherprotocols/>
			<otherservices/>
			<ftp/>
			<multicast/>
			<dscp/>
			<total/>
		</defineset>
	</definesets>
        <routergroups>
		<routergroup name="ROUTERS1">
			<router exporter="10.1.1.1" interface="10"/>
			<router exporter="10.1.1.1" interface="11"/>
			<router exporter="10.1.1.2" interface="10"/>
			<router exporter="10.1.1.2" interface="11"/>
		</routergroup>
		<routergroup name="ROUTERS1-LINE1">
			<router exporter="10.1.1.1" interface="10"/>
			<router exporter="10.1.1.2" interface="10"/>
		</routergroup>
		<routergroup name="ROUTERS1-LINE2">
			<router exporter="10.1.1.1" interface="11"/>
			<router exporter="10.1.1.2" interface="11"/>
		</routergroup>
		<routergroup name="ROUTERS2">
			<router exporter="10.2.2.2" interface="9"/>
			<router exporter="10.2.2.3" interface="9"/>
			<router exporter="10.2.2.4" interface="9"/>
			<router exporter="10.2.2.5" interface="9"/>
			<router exporter="10.2.2.2" interface="10"/>
			<router exporter="10.2.2.3" interface="10"/>
			<router exporter="10.2.2.4" interface="10"/>
			<router exporter="10.2.2.5" interface="10"/>
			<router exporter="10.2.2.2" interface="13"/>
			<router exporter="10.2.2.3" interface="13"/>
			<router exporter="10.2.2.4" interface="13"/>
			<router exporter="10.2.2.5" interface="13"/>
		</routergroup>
		<routergroup name="ROUTERS2-LINE1">
			<router exporter="10.2.2.2" interface="9"/>
			<router exporter="10.2.2.3" interface="9"/>
			<router exporter="10.2.2.4" interface="9"/>
        		<router exporter="10.2.2.5" interface="9"/>
		</routergroup>
		<routergroup name="ROUTERS2-LINE2">
			<router exporter="10.2.2.2" interface="10"/>
			<router exporter="10.2.2.3" interface="10"/>
			<router exporter="10.2.2.4" interface="10"/>
        		<router exporter="10.2.2.5" interface="10"/>
		</routergroup>
		<routergroup name="ROUTERS2-LINE3">
			<router exporter="10.2.2.2" interface="13"/>
			<router exporter="10.2.2.3" interface="13"/>
			<router exporter="10.2.2.4" interface="13"/>
        		<router exporter="10.2.2.5" interface="13"/>
		</routergroup>
	</routergroups>
	<directions>
		<direction name="ROUTERS1" routergroup="ROUTERS1">
			<set name="Common Services"/>
			<scoreboard every="1" latest="latest.html">
				<tuples>
					<tuple>srcip,dstip</tuple>
					<tuple>srcip,srcport,dstip,dstport</tuple>
					<tuple>srcport,dstport</tuple>
					<tuple>srcip,dstip,dstport</tuple>
					<tuple>srcip,srcport,dstip</tuple>
				</tuples>
				<report count="12" base="agghour" scorekeep="20" numkeep="100"/>
				<report count="72" base="agg6hour" scorekeep="20" numkeep="100"/>
			</scoreboard>
			<scoreboardother every="1" latest="latestother.html">
				<tuples>
					<tuple>srcip,dstip</tuple>
					<tuple>srcip,srcport,dstip,dstport</tuple>
					<tuple>srcport,dstport</tuple>
					<tuple>srcip,dstip,dstport</tuple>
					<tuple>srcip,srcport,dstip</tuple>
				</tuples>
				<report count="12" base="agghour" scorekeep="20" numkeep="100"/>
				<report count="72" base="agg6hour" scorekeep="20" numkeep="100"/>
			</scoreboardother>
		</direction>
		<direction name="ROUTERS1-LINE1" routergroup="ROUTERS1-LINE1">
			<set name="Common Services"/>
			<scoreboard every="1" latest="latest.html">
				<tuples>
					<tuple>srcip,dstip</tuple>
					<tuple>srcip,srcport,dstip,dstport</tuple>
					<tuple>srcport,dstport</tuple>
					<tuple>srcip,dstip,dstport</tuple>
					<tuple>srcip,srcport,dstip</tuple>
				</tuples>
				<report count="12" base="agghour" scorekeep="20" numkeep="100"/>
				<report count="72" base="agg6hour" scorekeep="20" numkeep="100"/>
			</scoreboard>
			<scoreboardother every="1" latest="latestother.html">
				<tuples>
					<tuple>srcip,dstip</tuple>
					<tuple>srcip,srcport,dstip,dstport</tuple>
					<tuple>srcport,dstport</tuple>
					<tuple>srcip,dstip,dstport</tuple>
					<tuple>srcip,srcport,dstip</tuple>
				</tuples>
				<report count="12" base="agghour" scorekeep="20" numkeep="100"/>
				<report count="72" base="agg6hour" scorekeep="20" numkeep="100"/>
			</scoreboardother>
		</direction>
		<direction name="ROUTERS1-LINE2" routergroup="ROUTERS1-LINE2">
			<set name="Common Services"/>
		</direction>
		<direction name="ROUTERS2" routergroup="ROUTERS2">
			<set name="Common Services"/>
		</direction>
		<direction name="ROUTERS2-LINE1" routergroup="ROUTERS2-LINE1">
			<set name="Common Services"/>
		</direction>
		<direction name="ROUTERS2-LINE2" routergroup="ROUTERS2-LINE2">
			<set name="Common Services"/>
			<scoreboard every="1" latest="latest.html">
				<tuples>
					<tuple>srcip,dstip</tuple>
					<tuple>srcip,srcport,dstip,dstport</tuple>
					<tuple>srcport,dstport</tuple>
					<tuple>srcip,dstip,dstport</tuple>
					<tuple>srcip,srcport,dstip</tuple>
				</tuples>
				<report count="12" base="agghour" scorekeep="20" numkeep="100"/>
				<report count="72" base="agg6hour" scorekeep="20" numkeep="100"/>
			</scoreboard>
		</direction>
		<direction name="ROUTERS2-LINE3" routergroup="ROUTERS2-LINE3">
			<set name="Common Services"/>
		</direction>
		<direction name="other">
			<set name="Common Services"/>
			<scoreboard>
				<tuples>
					<tuple>srcip,dstip</tuple>
					<tuple>srcip,srcport,dstip,dstport</tuple>
					<tuple>srcport,dstport</tuple>
					<tuple>srcip,dstip,dstport</tuple>
					<tuple>srcip,srcport,dstip</tuple>
				</tuples>
				<report count="12" base="agghour" scorekeep="20" numkeep="100"/>
				<report count="72" base="agg6hour" scorekeep="20" numkeep="100"/>
			</scoreboard>
			<scoreboardother>
				<tuples>
					<tuple>srcip,dstip</tuple>
					<tuple>srcip,srcport,dstip,dstport</tuple>
					<tuple>srcport,dstport</tuple>
					<tuple>srcip,dstip,dstport</tuple>
					<tuple>srcip,srcport,dstip</tuple>
				</tuples>
				<report count="12" base="agghour" scorekeep="20" numkeep="100"/>
				<report count="72" base="agg6hour" scorekeep="20" numkeep="100"/>
			</scoreboardother>
		</direction>
	</directions>
	<rrddir>/var/flows/report/rrds</rrddir>
	<scoredir>/var/flows/score</scoredir>
	<sampletime>300</sampletime>
</config>

Example using Sites:

<config>
	<definesets>
		<defineset name="Common Services">
			<application name="web">80/tcp,8080/tcp</application>
			<application name="secureweb">443/tcp</application>
			<application name="mailreading">110/tcp,143/tcp</application>
			<application name="windows">137-139/tcp,137-139/udp,42/tcp,135/tcp,445/tcp</application>
			<application name="dns">53/udp,53/tcp</application>
			<services>22-23/tcp,25/tcp,102/tcp,119/tcp</services>
			<otherservices/>
			<ftp/>
			<total/>
		</defineset>
		<defineset name="Extra Services">
			<protocols>tcp,udp,icmp</protocols>
			<multicast/>
			<otherprotocols/>
			<dscp/>
		</defineset>
		<defineset name="Scoreboarding">
			<scoreboard every="1" latest="latest.html">
				<tuples>
					<tuple>srcip,dstip</tuple>
					<tuple>srcip,srcport,dstip,dstport</tuple>
					<tuple>srcport,dstport</tuple>
					<tuple>srcip,dstip,dstport</tuple>
					<tuple>srcip,srcport,dstip</tuple>
				</tuples>
				<report count="12" base="agghour" scorekeep="20" numkeep="100"/>
				<report count="72" base="agg6hour" scorekeep="20" numkeep="100"/>
			</scoreboard>
			<scoreboardother every="1" latest="latest.html">
				<tuples>
					<tuple>srcip,dstip</tuple>
					<tuple>srcip,srcport,dstip,dstport</tuple>
					<tuple>srcport,dstport</tuple>
					<tuple>srcip,dstip,dstport</tuple>
					<tuple>srcip,srcport,dstip</tuple>
				</tuples>
				<report count="12" base="agghour" scorekeep="20" numkeep="100"/>
				<report count="72" base="agg6hour" scorekeep="20" numkeep="100"/>
			</scoreboardother>
		</defineset>
	</definesets>
	<sites>
		<site name="Belgium" subnets="10.10.0.0/16"/>
		<site name="Holland" subnets="10.20.0.0/16"/>
		<site name="England" subnets="10.30.0.0/16"/>
		<site name="Germany" subnets="10.40.0.0/16"/>
		<site name="France" subnets="10.50.0.0/16"/>
		<site name="Internet" subnets="0.0.0.0/0"/>
	</sites>
	<routergroups>
		<routergroup name="routers1">
			<router exporter="10.1.2.2" interface="3"/>
			<router exporter="10.1.2.3" interface="4"/>
		</routergroup>
		<routergroup name="routers2">
			<router exporter="10.1.2.3" localsubnets="10.0.0.0/8"/>
		</routergroup>
		<routergroup name="routers3">
			<router exporter="10.1.2.3" interface="1"/>
		</routergroup>
		<routergroup name="routers4">
			<router exporter="10.1.2.3" interface="2"/>
		</routergroup>
	</routergroups>
	<all localsubnets="10.0.0.0/8" samplerate="1">
		<set name="Common Services"/>
		<set name="Extra Services"/>
		<set name="Scoreboarding"/>
	</all>
	<directions>
		<direction name="Belgium-Internet" from="Belgium" to="Internet" noto="Belgium">
			<set name="Common Services"/>
			<set name="Extra Services"/>
			<set name="Scoreboarding"/>
		</direction>
		<direction name="Holland-Internet" from="Holland" to="Internet" noto="Holland">
			<set name="Common Services"/>
			<set name="Scoreboarding"/>
		</direction>
		<direction name="Holland-Internet interface 1" from="Holland" to="Internet" noto="Holland" routergroup="routers3">
			<set name="Common Services"/>
			<set name="Scoreboarding"/>
		</direction>
		<direction name="Holland-Internet interface 2" from="Holland" to="Internet" noto="Holland" routergroup="routers4">
			<set name="Common Services"/>
		</direction>
		<direction name="Holland-Internet subnet" from="Holland" to="Internet" noto="Holland" routergroup="routers2">
			<set name="Common Services"/>
		</direction>
		<direction name="Engeland-Germany" from="England" to="Germany">
			<set name="Common Services"/>
		</direction>
		<direction name="Engeland-France" from="England" to="France">
			<set name="Common Services"/>
		</direction>
		<direction name="Engeland-Internet" from="England" to="Internet" noto="England">
			<set name="Common Services"/>
		</direction>
		<direction name="Duitsland-Internet" from="Germany" to="Internet" noto="Germany">
			<set name="Common Services"/>
		</direction>
		<direction name="France-Internet" from="France" to="Internet" noto="France">
			<set name="Common Services"/>
			<set name="Extra Services"/>
		</direction>
		<direction name="France-Germany" from="France" to="Germany">
			<set name="Common Services"/>
			<set name="Extra Services"/>
		</direction>
		<direction name="Holland-Germany" from="Holland" to="Germany">
			<set name="Common Services"/>
			<set name="Extra Services"/>
			<set name="Scoreboarding"/>
		</direction>
		<direction name="Holland-France" from="Holland" to="France">
			<set name="Common Services"/>
			<set name="Extra Services"/>
			<set name="Scoreboarding"/>
		</direction>
		<direction name="Belgium-Germany" from="Belgium" to="Germany">
			<set name="Common Services"/>
			<set name="Extra Services"/>
			<scoreboard>
				<tuples>
					<tuple>srcip,dstip</tuple>
				</tuples>
				<report count="12" base="agghour"/>
				<report count="72" base="agg6hour"/>
			</scoreboard>
			<scoreboardother>
				<tuples>
					<tuple>srcip,dstip</tuple>
				</tuples>
				<report count="12" base="agghour"/>
				<report count="72" base="agg6hour"/>
			</scoreboardother>
		</direction>
		<direction name="NotFromHolland-Belgium" nofrom="Holland" to="Belgium">
			<application name="web">80/tcp,8080/tcp</application>
			<application name="secureweb">443/tcp</application>
			<application name="mailreading">110/tcp,143/tcp</application>
			<application name="windows">137-139/tcp,137-139/udp,42/tcp,135/tcp,445/tcp</application>
			<application name="dns">53/udp,53/tcp</application>
			<services>22-23/tcp,25/tcp,102/tcp,119/tcp</services>
			<protocols>tcp,udp,icmp</protocols>
			<multicast/>
			<tos/>
			<ftp/>
			<total/>
			<scoreboard>
				<tuples>
					<tuple>srcip,dstip</tuple>
				</tuples>
				<report count="12" base="agghour"/>
				<report count="72" base="agg6hour"/>
			</scoreboard>
		</direction>
		<direction name="Routers1" routergroup="routers1">
			<set name="Common Services"/>
			<set name="Extra Services"/>
			<scoreboard>
				<tuples>
					<tuple>srcport,dstport</tuple>
				</tuples>
				<report count="12" base="agghour"/>
				<report count="72" base="agg6hour"/>
			</scoreboard>
		</direction>
		<direction name="Routers2" routergroup="routers2">
			<set name="Common Services"/>
			<set name="Extra Services"/>
			<scoreboard>
				<tuples>
					<tuple>srcip,dstip</tuple>
					<tuple>srcport,dstport</tuple>
				</tuples>
				<report count="12" base="agghour"/>
				<report count="72" base="agg6hour"/>
			</scoreboard>
		</direction>
	</directions>
	<rrddir>/var/flows/reports/rrds</rrddir>
	<scoredir>/var/flows/score</scoredir>
	<sampletime>300</sampletime>
</config>