157 lines
6.4 KiB
Plaintext
157 lines
6.4 KiB
Plaintext
# $Id$
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# Author: Andrew Johnson
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# Date: 20 April 1995
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#
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# Experimental Physics and Industrial Control System (EPICS)
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#
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# CONFIG_ENV - EPICS Environment Parameter configuration file
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#
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# This file is interpreted by the Bourne Shell, so spaces are
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# not allowed around the '=' signs or in unquoted values.
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# Makefile variables are not defined here.
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#
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# Note: This file is read by base/src/libCom/bldEnvdata.pl,
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# so the variable definitions in here should be kept 'simple':
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# VAR=VALUE
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# each one on a single line.
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#
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# Default environment settings
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# Channel Access:
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# EPICS_CA_ADDR_LIST
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# Augment beacon/search dest ip addr list
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# from white space separated ip addresses in this
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# environment variable. "Quote" if more than one addr.
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# EPICS_CA_AUTO_ADDR_LIST
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# YES = augment beacon/search dest ip
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# addr list from network interfaces found; NO = only use
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# EPICS_CA_ADDR_LIST to create this list.
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# EPICS_CA_CONN_TMO
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# after not seeing a server beacon for this number
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# of seconds the clients will send an echo request over
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# tcp/ip to verify the connection.
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# EPICS_CA_REPEATER_PORT CA repeater port number.
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# EPICS_CA_SERVER_PORT CA server port number.
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EPICS_CA_ADDR_LIST=""
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EPICS_CA_AUTO_ADDR_LIST=YES
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EPICS_CA_CONN_TMO=30.0
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EPICS_CA_REPEATER_PORT=5065
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EPICS_CA_SERVER_PORT=5064
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#
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# These parameters are only used by the CA server library
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#
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# EPICS_CA_BEACON_PERIOD
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# The quiescent sec between server beacons.
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#
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# EPICS_CAS_INTF_ADDR_LIST
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# This specifies a list of IP addresses identifying
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# a limited set of network interfaces for server communication.
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#
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# Specifically, this parameter specifies the interfaces from
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# which the server will accept TCP/IP connections. It also
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# specifies that UDP search messages addressed to both
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# the IP addresses in EPICS_CAS_INTF_ADDR_LIST and also to
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# the broadcast addresses of corresponding LAN interfaces
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# will be accepted by the server. If this parameter is empty
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# then all UDP search messages and TCP connection requests
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# addressed to the host are accepted.
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#
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# If EPICS_CA_AUTO_ADDR_LIST is NO, then the beacon address list
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# is not auto configured.
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#
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# If EPICS_CA_AUTO_ADDR_LIST is YES and EPICS_CAS_INTF_ADDR_LIST
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# has _not_ been specified then beacons are sent to the broadcast
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# addresses of all LAN interfaces and the destination addresses of
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# all point-to-point serial interfaces.
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#
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# If EPICS_CA_AUTO_ADDR_LIST is YES and EPICS_CAS_INTF_ADDR_LIST
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# _has_ been specified then beacons are sent to the broadcast address
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# of each LAN interface corresponding to an IP address in
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# EPICS_CAS_INTF_ADDR_LIST or the destination address of
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# a point-to-point serial interfaces corresponding to an IP
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# address in EPICS_CAS_INTF_ADDR_LIST.
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#
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# Beacons may be sent to additional hand configured addresses
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# (see the notes below under EPICS_CAS_BEACON_ADDR_LIST).
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#
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# EPICS_CAS_BEACON_ADDR_LIST
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# If this parameter is specified, or if EPICS_CAS_INTF_ADDR_LIST
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# isnt empty, then this parameter is used by the server library to
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# augment the list of addresses beacons are sent to. Otherwise
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# EPICS_CA_ADDR_LIST is used to augment the list of addresses
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# beacons are sent to.
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#
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# EPICS_CAS_SERVER_PORT
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# If this parameter is specified then it
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# and not EPICS_CA_SERVER_PORT is used to determine the server's
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# port number. It is possible to have multiple servers on the
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# same host on the same EPICS_CAS_SERVER_PORT port if the IP
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# kernel is modern (if it has multicast enhancements). In this
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# situation all servers will share the same user specified
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# UDP port number and will be assigned unique TCP port numbers.
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#
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# The fact that the servers may not be using the user specified
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# port number for TCP will be nearly transparent to EPICS
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# 3.13 or higher clients that will be locating the servers
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# using the user specified UDP port number, but will be connecting
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# to the servers using whatever TCP port has been assigned.
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# Unfortunately, a severe limitation exists in most IP
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# kernels: if multiple servers are listening for search requests
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# addressed to the same UDP port then they will all receive a copy
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# of each UDP message received by the IP kernel that has a broadcast
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# destination address. Unfortunately, in many IP kernel
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# implementations only one of the servers will receive UDP
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# messages with a single host (unicast) destination address.
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#
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# If experiencing trouble getting clients to connect
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# --------------------------------------------------
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#
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# o Make sure that the broadcast addresses are identical on the
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# server's host and on the client's host. This can be checked with
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# "netstat -i" or "ifconfig -a".
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#
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# o Make sure that the client and server are using the same UDP
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# port. Check the server's port by running "netstat -a | grep nnn"
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# where nnn is the port number involved. If you do not set
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# EPICS_CA_SERVER_PORT or EPICS_CAS_SERVER_PORT
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# then the default port will be 5064.
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#
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# o Two servers can run on the same host with the same server port number
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# if the following restrictions are understood (good luck). If the host has a
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# modern IP kernel it is possible to have two servers on the same UDP port.
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# It is not possible for two servers to run on the same host using the same
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# TCP IP server port. If the CA server library detects that a 2nd server is attempting
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# to start on the same port as an existing CA server then both servers will use the
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# same UDP port if it is a modern IP kernel, and the 2nd server will
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# be allocated a new TCP port. In this situation the clients will still be
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# configured to use the same port number for both servers. The clients
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# will find the 2nd server via the shared UDP port, and transparently
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# connect to the 2nd server's allocated TCP port. Be aware that If there are
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# two server's running on the same host on the same UDP port then they will
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# both receive all UDP search requests sent as broadcasts, but will unfortunately (due to
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# what I consider to be a real weakness of most IP kernel implementations) only one
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# of the servers will typically receive UDP search requests sent to unicast addresses (i.e.
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# a specific host's ip address).
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#
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EPICS_CA_BEACON_PERIOD=15.0
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EPICS_CAS_INTF_ADDR_LIST=""
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EPICS_CAS_BEACON_ADDR_LIST=""
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EPICS_CAS_SERVER_PORT=
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# Log Server:
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# EPICS_IOC_LOG_PORT Log server port number etc.
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EPICS_IOC_LOG_PORT=7004
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# Other services:
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EPICS_CMD_PROTO_PORT=
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EPICS_AR_PORT=7002
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