perfSONAR User Q&A and Other Discussion

["Lang, Michael" <>]

Hello,

 

I’m having some trouble running tests with a perfSONAR node that has multiple interfaces.  The node in question has three interfaces on it:

 

ps2-management.net.uconn.edu (default interface, host traffic)

ps2-throughput.net.uconn.edu (10G interface, bandwidth/throughput testing)

ps2-latency.net.uconn.edu (1G interface, latency testing)

 

There is no problem with bandwidth testing, for example if I do:

 

/usr/bin/bwctl -T iperf3 -t 10 -v -c perfsonar-hartford.cen.ct.gov -s ps2-throughput.net.uconn.edu

 

The correct endpoints run the test.

 

The problem I have is with bwtraceroute and bwping.  If I run tests specifying ps2-throughput.net.uconn.edu as an endpoint like this:

 

/usr/bin/bwtraceroute -T tracepath -c perfsonar-hartford.cen.ct.gov -s ps2-throughput.net.uconn.edu

 

or

 

bwping -T owamp -i 0.1 -N 100 -c perfsonar-storrs.cen.ct.gov -s ps2-throughput.net.uconn.edu

 

the test will run but it selects the default interface p2-management.net.uconn.edu as an endpoint in the test.  If I try to correct it with:

 

/usr/bin/bwtraceroute -T tracepath -c perfsonar-hartford.cen.ct.gov -s ps2-throughput.net.uconn.edu -B ps2-throughput.net.uconn.edu

 

or

 

bwping -T owamp -i 0.1 -N 100 -c perfsonar-storrs.cen.ct.gov -s ps2-throughput.net.uconn.edu -B ps2-throughput.net.uconn.edu

 

the test runs with the same incorrect endpoints and prints the additional message:

 

bwtraceroute: getaddrinfo(): Network is unreachable

bwping: getaddrinfo(): Network is unreachable

 

Anyone know what I’m doing wrong or how to fix this?  Thanks in advance.

 

-          Mike