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Summary
merger is a tool to merge multiple traffic streams. It merges multiple input
traffic streams in a FIFO/Drop tail queue.
The input to the tool consists of several traffic trace files. The output is
written to a traffic trace file.
Execution
merger <Number of input ports> <Buffer size of output port in kBytes> <
Transmission rate of output port in Mb/s>
Input traffic trace file format
- Name: res<ipport>.in
- Format: timestamp pktid srcaddr srcport dstaddr dstport
size
pktid: Unique number identifying each
packet of a trace file.
ipport: Input port that the packet
arrived on.
timestamp: Arrival time of packet to
queue.
Output traffic trace file format
- Name: res0.out
- Format: timestamp ipport:pktid srcaddr srcport dstaddr
dstport size
timestamp: Time when the packet
reaches the end of the output link.
ipport: Input port that the packet
arrived on.
*NOTE: the timestamp in the output file reflects when the
packet reaches the end of the output link. i.e. the timestamp is the time when
the router FINISHES outputting the packet
Authors
This code is primarily by
Purushotham Kamath <pkamath@ISI.EDU>
with contributions by
Kun-chan Lan
Sean McPherson
Gautam Thatte
It has been used in the following papers:
Purushotham Kamath, Kun-chan Lan, John Heidemann, Joe Bannister, and Joe
Touch. Generation of High Bandwidth Network Traffic Traces. In Proceedings
of the International Symposium on Modeling, Analysis and Simulation of Computer
and Telecommunication Systems, pp. 401-410. Fort Worth, Texas, USA, USC/Information
Sciences Institute, IEEE. October, 2002. <http://www.isi.edu/~johnh/PAPERS/Kamath02a.html>.
Example - Taken from Test Suite
TEST 01
Input packets occur back-to-back ... 10 Mbps input and output bitrates
Input Trace File
1.000000 2 1677277 1942 1677256 80 1500
1.001200 4 1677277 1942 1677256 80 40
1.001232 6 1677277 1942 1677256 80 40
1.001264 8 1677277 1942 1677256 80 800
1.001904 10 1677277 1942 1677256 80 1500
1.003104 12 1677277 1942 1677256 80 40
1.003136 14 1677277 1942 1677256 80 1500
1.004336 16 1677277 1942 1677256 80 800
1.004976 18 1677277 1942 1677256 80 40
1.005008 20 1677277 1942 1677256 80 40
Output Trace File
1.001200000000 0:2 1677277 1942 1677256 80 1500
1.001232000000 0:4 1677277 1942 1677256 80 40
1.001264000000 0:6 1677277 1942 1677256 80 40
1.001904000000 0:8 1677277 1942 1677256 80 800
1.003104000000 0:10 1677277 1942 1677256 80 1500
1.003136000000 0:12 1677277 1942 1677256 80 40
1.004336000000 0:14 1677277 1942 1677256 80 1500
1.004976000000 0:16 1677277 1942 1677256 80 800
1.005008000000 0:18 1677277 1942 1677256 80 40
1.005040000000 0:20 1677277 1942 1677256 80 40
TEST 07
Both input line speeds at 5 Mbps each, and *slightly staggered* packets
(have included random time increments into the second stream to cause
overlapping)
output line speed set at 5 Mbps.
Input Trace Files
((stream01))
1.000000 1 1677277 1942 1677256 80 1500
1.004800 3 1677277 1942 1677256 80 40
1.004928 5 1677277 1942 1677256 80 40
1.005056 7 1677277 1942 1677256 80 800
1.007616 9 1677277 1942 1677256 80 1500
1.012416 11 1677277 1942 1677256 80 40
1.012544 13 1677277 1942 1677256 80 1500
((stream02))
1.002000 2 1677277 1942 1677256 80 1500
1.004850 4 1677277 1942 1677256 80 40
1.004950 6 1677277 1942 1677256 80 40
1.005750 8 1677277 1942 1677256 80 800
1.009016 10 1677277 1942 1677256 80 1500
1.012450 12 1677277 1942 1677256 80 40
1.014000 14 1677277 1942 1677256 80 1500
Output Trace File
1.002400000000 0:1 1677277 1942 1677256 80 1500
1.004800000000 1:2 1677277 1942 1677256 80 1500
1.004864000000 0:3 1677277 1942 1677256 80 40
1.004928000000 1:4 1677277 1942 1677256 80 40
1.004992000000 0:5 1677277 1942 1677256 80 40
1.005056000000 1:6 1677277 1942 1677256 80 40
1.006336000000 0:7 1677277 1942 1677256 80 800
1.007616000000 1:8 1677277 1942 1677256 80 800
1.010016000000 0:9 1677277 1942 1677256 80 1500
1.012416000000 1:10 1677277 1942 1677256 80 1500
1.012480000000 0:11 1677277 1942 1677256 80 40
1.012544000000 1:12 1677277 1942 1677256 80 40
1.014944000000 0:13 1677277 1942 1677256 80 1500
1.017344000000 1:14 1677277 1942 1677256 80 1500
Matlab plot of the input traces and the combined output trace
