How to use llttest and lltping to test LLT heartbeat network

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Article ID: 100022853

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llttest
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The llttest command is similar to shell scripting, once, you enter the initial llttest command with port number and optional arguments, you will run subsequent commands from a ">" prompt.
 
From the sending host:
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bash-3.00# llttest -p 20 -v
 
> transmit -n  -c 1000
sending 1000 messages of size 128 to node 0
1000 <-- 1000 messages sent
 

From the receiving host:
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bash-3.00# llttest -p 20 -v
 
> receive -c 1000
receiving 1000 messages of size 128
1000<-- successfully received 1000 messages
 
 

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lltping
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To use this tool, firstly, check /etc/llthosts to determine node ID(s) for the nodes involved in the test.
 
On node 1, run below command to ping from node1 from node0
bash-3.00# lltping -s -T -p 20&
 
Then on node 0, run below command
bash-3.00# lltping -c 1 -T -p 20 -v
 
Sample Output:
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lltping: opening LLT dev: /dev/llt port: 20
lltping: mynodeid: 0
lltping: send_recv_ping to node=1, pkts=20
lltping: send pkt=0
lltping: sending a msg to node 1
lltping: pkt=0, rtt=(0s 769us), tx=(0s 246us) rx=(0s 523us)
lltping: send pkt=1
lltping: sending a msg to node 1
lltping: pkt=1, rtt=(0s 276us), tx=(0s 208us) rx=(0s 68us)
lltping: send pkt=2
lltping: sending a msg to node 1
lltping: pkt=2, rtt=(0s 297us), tx=(0s 225us) rx=(0s 72us)
lltping: send pkt=3
lltping: sending a msg to node 1
lltping: pkt=3, rtt=(0s 291us), tx=(0s 202us) rx=(0s 89us)
lltping: send pkt=4
lltping: sending a msg to node 1
lltping: pkt=4, rtt=(0s 276us), tx=(0s 204us) rx=(0s 72us)
lltping: send pkt=5
lltping: sending a msg to node 1
...truncated.......
 

 

 

 

 
 

 

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How to use llttest and lltping to test LLT heartbeat network
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