Recently we've experienced network problems at our site. We were getting
too many collisions. While investigating this problem I came across the
"spray" command.
I seem to have a problem with the spray command on the Alpha 3000 systems.
These systems are running Unix V3.2C. If I execute "spray" with no options
other than a hostname I loose many packets.
pgw6> spray pgw1
sending 1162 packets of lnth 86 to pgw1 ...
in 10.2 seconds elapsed time,
236 packets (20.31%) dropped by pgw1
Sent: 114 packets/sec, 9.6K bytes/sec
Rcvd: 91 packets/sec, 7.6K bytes/sec
pgw1> spray pgw6
sending 1162 packets of lnth 86 to pgw6 ...
in 10.1 seconds elapsed time,
437 packets (37.61%) dropped by pgw6
Sent: 114 packets/sec, 9.6K bytes/sec
Rcvd: 71 packets/sec, 6.0K bytes/sec
pgw1> spray clt (Not an Alpha)
sending 1162 packets of lnth 86 to clt ...
in 10.3 seconds elapsed time,
944 packets (81.24%) dropped by clt
Sent: 112 packets/sec, 9.5K bytes/sec
Rcvd: 21 packets/sec, 1.8K bytes/sec
---------------------------------------------------------------------
If I specify a "-i" I loose no packets. The "-i" option is not specified
in the man page for spray.
pgw6> spray -i pgw1
sending 1162 packets of lnth 86 to pgw1 ...
no packets dropped by pgw1
4027 packets/sec, 346389 bytes/sec
pgw1> spray -i pgw6
sending 1162 packets of lnth 86 to pgw6 ...
no packets dropped by pgw6
5244 packets/sec, 451054 bytes/sec
pgw1> spray -i clt (Not an Alpha)
sending 1162 packets of lnth 86 to clt ...
967 packets (83.219%) dropped by clt
1174 packets/sec, 101016 bytes/sec
I was hoping "spray" would help me identify a network problem. Any ideas?
Thanks,
Jack
jackb_at_pgw.picker.com
Received on Thu Nov 16 1995 - 16:54:00 NZDT