Re: [Ospf-manet] new software snapshot

[Richard Ogier <rich.ogier at earthlink.net>]

I used the new GTNetS code to simulate OSPF-MDR with 100 nodes and
range = 250, using 1-connected adjacencies and min-cost LSAs.
I probably should be more patient in reporting results, but I am excited
about these results and maybe it will get others to try out the simulation
software.  The statistics output is shown below.  I like the overhead and
delivery ratio.  It would be nice to compare this to OR/SP, but they do not
yet have partial-topology LSAs.

This simulation took about 2 hours to run.  Note the values of the 
parameters
RxmtInterval, BackupWaitInterval, and AckInterval, which are the preferred
values for OSPF-MDR.  Note that the biggest contributor to overhead is 
Hello packets
(full Hellos were used), but differential Hellos can be used to reduce this.

Richard

./random_waypoint_manet-opt wireless_interface=2 wireless_flooding=2 
HelloInterval=2 DeadInterval=6 RxmtInterval=7 AckInterval=1000 
BackupWaitInterval=500 AdjConnectivity=1 LSAFullness=1 num_nodes=100 
radio_range=250 velocity=10 start_time=1800 stop_time=2700

Neighbor statistics (at physical layer):
--------------------------------------------------
Number of nodes: 100
Neighbor threshold distance (m): 250.00
Average neighbor density (neighbors/# of nodes):  0.63
Average neighbor changes/time (changes/sec/node): 0.46

OSPFv3 Statistics
          | Packets          Bytes         Kbps
----------------------------------------------------
Hello       |   45000      14372984      127.76
LSAck       |   69004       9851264       87.57
LSR         |     375         21060        0.19
DBDESC      |    9095       8633920       76.75
LSU         |   26405       6760080       60.09
 LSUfld    |     19279       5240508       46.58
 LSUuni    |      7126       1519572       13.51
   LSUcol  |          39         17776        0.16
   LSUrxmt |        6565       1384588       12.31
   LSUdbex |         374         89744        0.80
   LSUstale|         148         27464        0.24
           |
Total       |  149879      39639308      352.35

OSPF Network Characteristics
--------------------------------------------------
OSPF 2way_neighbors/node: 62.40
OSPF 2way_neighbor_changes/node/sec: 1.08
avg_sec/OSPF 2way neighbor_life: 126.44
OSPF adjacencies/node: 2.60
OSPF adjacency_changes/node/sec: 0.03
avg_LSAsOutSync: 0.10
Secs per router-LSA origination:  20.59

Flooding Statistics
--------------------------------------------------
relaysel/node: 3.87
avg_sec/relaysel_life: 47.65
suppressed_LSAs: 358601
relay_flood_LSAs: 25239
nonrelay_flood_LSAs: 1751

User Traffic Analysis
--------------------------------------------------
UDP sends: 8897 pkts, 604996 bytes
UDP receives: 8560 pkts, 582080 bytes
UDP forwards: 3714 pkts, 252552 bytes

Delivery Ratio:  0.962
--------------------------------------------------



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