"Between simulators" ...?
So you are running two simulators, and if I understand all of your text
correctly, you have the same MAC address on both of them?
In that case, I would indeed expect for each one, to on average only get
a 50% success rate on ping packets.
Johnny
On 2016-08-23 19:12, David Coolbear wrote:
I have simh running on a Linux host. When I installed simh (compiled
from source) the host was running OpenSUSE 13.1. It subsequently was
upgraded to 13.2. The Linux host has two NICs - one of them is dedicated
to simh. The host os loads the kernel module for the NIC and admins it
up, but does not configure an IP address. Both NICs are cabled into a
gig-e switch and the switch is cabled into a cable modem.
When the host was running OpenSUSE 13.1, networking on simh worked
perfectly. I'm not certain, but I suspect that it also worked perfectly
under 13.2. I recently ran both the PDP11 simulator and the VAX
simulator. Both of these had about 50% packet loss when pinging between
simulators or between the Linux host and either simulator.
The pertinent portion of the simh initialization file looks like this:
set xq mac=08-00-2B-AA-BB-CC
at xq enp4s1
Where the host's Etherent device is /dev/enp4s1.
Versions look like this:
Host OS = OpenSUSE 13.2
simh version = V3.9-0
libpcap1-32bit-1.6.2-1.2.x86_64
libpcap1-1.6.2-1.2.x86_64
libpcap-devel-32bit-1.6.2-1.2.x86_64
libpcap-devel-1.6.2-1.2.x86_64
The pdp11 simulator starts up normally...
PDP-11 simulator V3.9-0
libpcap version 1.6.2
Eth: opened OS device enp4s1
Disabling CR
73Boot from ra(0,0,0) at 0172150
:
...and networking does work a bit, but shows heavy packet loss...
# /etc/netstart
Assuming NETWORKING system ...
add host spdp11: gateway localhost
add net default: gateway 192.168.1.1
# ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1): 56 data bytes
64 bytes from 192.168.1.1 <http://192.168.1.1>: icmp_seq=1 ttl=64
time=933.352 ms
64 bytes from 192.168.1.1 <http://192.168.1.1>: icmp_seq=2 ttl=64
time=266.672 ms
64 bytes from 192.168.1.1 <http://192.168.1.1>: icmp_seq=3 ttl=64
time=250.005 ms
^C
--- 192.168.1.1 ping statistics ---
5 packets transmitted, 3 packets received, 40% packet loss
round-trip min/avg/max = 250.005/0/933.352 ms
#
Any ideas why this would be?
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