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<== Date ==> | <== Thread ==> |
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Subject: | Re: problem connecting serial device with moxa 5150A |
From: | Matt Newville <[email protected]> |
To: | Mark Rivers <[email protected]> |
Cc: | "[email protected]" <[email protected]> |
Date: | Tue, 24 Jan 2017 09:29:42 -0600 |
I'm trying to help Sunny to connect from Linux to a serial port on a Moxa box. It is not working, and I am stumped, so any ideas are welcome.
From Windows he can telnet to it:
> when I telnet from windows
> telnet 192.168.127.254 4001
> It prompts a blank screen and for other IP or ports like 192.168.127.254 5064, 192.168.127.34 4732 etc. it simply says host not available so I think port 4001 should be good.
When he connects it to Linux he can ping it:
ping 192.168.127.254
PING 192.168.127.254 (192.168.127.254) 56(84) bytes of data.
64 bytes from 192.168.127.254<http://192.168.127.254 >: icmp_seq=1 ttl=255 time=1.69 ms
64 bytes from 192.168.127.254<http://192.168.127.254 >: icmp_seq=2 ttl=255 time=0.797 ms
64 bytes from 192.168.127.254<http://192.168.127.254 >: icmp_seq=3 ttl=255 time=0.753 ms
ifconfig looks OK:
eth0 Link encap:Ethernet HWaddr D8:CB:8A:9C:61:96
inet addr:192.168.127.0 Bcast:192.168.127.255 Mask:255.255.255.0
inet6 addr: fe80::dacb:8aff:fe9c:6196/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:16 errors:0 dropped:0 overruns:0 frame:0
TX packets:63 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1454 (1.4 Kb) TX bytes:10799 (10.5 Kb)
arp looks good:
sbin/arp
Address HWtype HWaddress Flags Mask Iface
10.128.0.254 ether 00:00:5e:00:01:83 C eth1
10.128.0.99 ether 00:04:96:6d:67:7f C eth1
10.128.0.253 ether 00:04:96:15:5e:70 C eth1
10.128.0.238 ether 00:04:96:27:50:63 C eth1
10.128.0.244 ether 00:04:96:34:ea:f2 C eth1
10.128.0.252 ether 00:04:96:28:24:ce C eth1
10.128.0.237 ether 00:04:96:51:a8:8b C eth1
192.168.127.254 ether 00:90:e8:4e:6e:4e C eth0
10.128.0.251 ether 00:04:96:16:c7:50 C eth1
10.128.0.249 ether 00:04:96:05:7a:13 C eth1
10.128.0.247 ether 00:04:96:36:54:da C eth1
10.128.0.246 ether 00:04:96:21:d6:10 C eth1
The firewall is disabled:
systemctl status SuSEfirewall2.service
SuSEfirewall2 phase 2
Loaded: loaded (/usr/lib/systemd/system/SuSEfirewall2.service; disabled)
Active: inactive (dead)
But when he tries to telnet from the Linux box it times out:
telnet 192.168.127.254 4001
Trying 192.168.127.254...
telnet: connect to address 192.168.127.254<http://192.168.127.254 >: Connection timed out
Any ideas what could be causing this?
Thanks,
Mark