dbfunk@icaen.uiowa.edu (David B. Funk) (12/09/88)
Does the Apollo version of /etc/ping use a non-standard icmp packet?
There are various machines on the internet that will not respond to
a ping from an Apollo but will respond to pings from other types
of machines on our campus (such as bsd VAXes, Suns, Encore, etc).
I know it is not a routing or connectivity problem because the remote
hosts will respond to a ftp or telnet connect request from the Apollos.
I don't think that it is a filtering problem in our gateway because
other remote hosts will respond to pings from the Apollos.
I would appreciate any suggestions as to what is going on or how to
fix it.
Specifics:
OS: SR9.7.x
tcp/ip v3.1
non-responding remote host: eddie.mit.edu (18.62.0.6)
responding remote host: umix.cc.umich.edu (35.1.1.10)
Dave Funk
University of Iowacoop@METO.UMD.EDU (James N. Cooper) (12/09/88)
Dave, I can ping eddie.mit.edu successfully using the same OS and TCP/IP versions that you have. Here is a sample /etc/ping eddie.mit.edu PING eddie.mit.edu: 56 data bytes 64 bytes from 18.62.0.6: icmp_seq=0. time=743. ms 64 bytes from 18.62.0.6: icmp_seq=1. time=783. ms Timed out (1 second) waiting for echo reply 64 bytes from 18.62.0.6: icmp_seq=2. time=1304. ms 64 bytes from 18.62.0.6: icmp_seq=3. time=1522. ms 64 bytes from 18.62.0.6: icmp_seq=4. time=624. ms 64 bytes from 18.62.0.6: icmp_seq=5. time=925. ms 64 bytes from 18.62.0.6: icmp_seq=6. time=547. ms 64 bytes from 18.62.0.6: icmp_seq=7. time=880. ms Timed out (1 second) waiting for echo reply Timed out (1 second) waiting for echo reply 64 bytes from 18.62.0.6: icmp_seq=8. time=2212. ms 64 bytes from 18.62.0.6: icmp_seq=9. time=2367. ms 64 bytes from 18.62.0.6: icmp_seq=10. time=2928. ms Timed out (1 second) waiting for echo reply 64 bytes from 18.62.0.6: icmp_seq=12. time=2611. ms ----eddie.mit.edu PING Statistics---- 16 packets transmitted, 12 packets received, 25% packet loss round-trip (ms) min/avg/max = 547/1453/2928 I can also ping umix.cc.umich.edu. Jim Cooper Dept of Meteorology University of Maryland coop@meto.umd.edu