[hosts]
h1: _ ccnx:/,s1
h2: _ ccnx:/,s1
h3: _ ccnx:/,s1
h4: _ ccnx:/,s1
h5: _ ccnx:/,s1
h6: _ ccnx:/,s1
h7: _ ccnx:/,s1
h8: _ ccnx:/,s1
r1: _
r2: _
r3: _ 
r4: _
r5: _
r6: _
r7: _
r8: _
[routers]
s1: ccnx:/,s2
s2: ccnx:/,s3
s3: ccnx:/s/1,r1 ccnx:/s/2,r2 ccnx:/s/3,r3 ccnx:/s/4,r4 ccnx:/s/5,r5 ccnx:/s/6,r6 ccnx:/s/7,r7 ccnx:/s/8,r8
[links]
h1:s1
h2:s1
h3:s1
h4:s1
h5:s1
h6:s1
h7:s1
h8:s1
s1:s2
s2:s3
r1:s3
r2:s3
r3:s3
r4:s3
r5:s3
r6:s3
r7:s3
r8:s3