RE: MEDM screen go white

["Mark Rivers" <rivers@cars.uchicago.edu>]

A common problem with modern Linux systems is that they have a firewall turned on by default.  Make sure you don't have a firewall running, or if you do that it allows ports 5064 and 5065 for UDP and TCP.
 
Mark
 

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From: tech-talk-bounces@aps.anl.gov on behalf of zhangdemin99
Sent: Mon 12/8/2008 5:34 AM
To: tech-talk
Subject: MEDM screen go white


Dear all,
    I have one OPI with base3.14.9-prel on Red Hat 9, and one IOC with base3.14.9-prel on Red Hat
 Enterprise Linux WS 4. The IP of the IOC I set is 192.168.1.1, and the OPI is 192.168.1.2.
 after "ping" and "ifconfig", on IOC it gets: 

[root@localhost ~]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:0B:DB:C2:96:D8
          inet addr:192.168.1.1  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::20b:dbff:fec2:96d8/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:740 (740.0 b)  TX bytes:1330 (1.2 KiB)
          Interrupt:201
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:1706 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1706 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1978328 (1.8 MiB)  TX bytes:1978328 (1.8 MiB)

on OPI it gets:
[root@localhost root]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:11:09:08:A1:1E
          inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:272 errors:0 dropped:0 overruns:0 frame:0
          TX packets:149 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:27964 (27.3 Kb)  TX bytes:30118 (29.4 Kb)
          Interrupt:21 Base address:0xb000
 
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:11864 errors:0 dropped:0 overruns:0 frame:0
          TX packets:11864 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:757526 (739.7 Kb)  TX bytes:757526 (739.7 Kb)
   I set the Environment Variables EPICS_CA_ADDR_LIST=192.168.1.2 and EPICS_CA_AUTO_ADDR_LIST=NO
on the IOC. when running the IOC , the IOC can't work correctly ,it gets:
 
epics>../online_notify.c:CA beacon (send to "192.168.1.255:5065")error was "Connection refused"
   
  Then I set EPICS_CA_ADDR_LIST=192.168.1.1 and EPICS_CA_AUTO_ADDR_LIST=NO
on the OPI. After rebooting the IOC, there is no error message, but the MEDM screen go white. running
casr 10 on IOC, it gets:

epics> casr 10
Channel Access Server V4.11
No clients connected.
UDP Server:
UDP 0.0.0.0:0(): User="", V4.0, 0 Channels, Priority=0
        Task Id=0x92d4e70, Socket FD=7
        Secs since last send  16.46, Secs since last receive  16.46
        Unprocessed request bytes=16, Undelivered response bytes=0
        State=up
        180 bytes allocated
        Send Lock
epicsMutexId 0x92dad20 source ../caservertask.c line 699
        Put Notify Lock
epicsMutexId 0x9341e78 source ../caservertask.c line 700
        Address Queue Lock
epicsMutexId 0x9341eb0 source ../caservertask.c line 701
        Event Queue Lock
epicsMutexId 0x9341ee8 source ../caservertask.c line 702
        Block Semaphore
There are currently 1260 bytes on the server's free list
7 client(s), 0 channel(s), 0 event(s) (monitors) 0 putNotify(s)
0 small buffers (16384 bytes ea), and 0 jumbo buffers (16408 bytes ea)
The server's array size limit is 16408 bytes max
Channel Access Address List
192.168.1.255:5065
192.168.1.2:5065
epics>
 
appreciation for any suggestion
Best Wishes
                                                Demin Zhang
 


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