diff --git a/configure/CONFIG_ENV b/configure/CONFIG_ENV
index 4fad13bcf..2fae58374 100644
--- a/configure/CONFIG_ENV
+++ b/configure/CONFIG_ENV
@@ -24,22 +24,32 @@
 #   Augment beacon/search dest ip addr list
 #   from white space separated ip addresses in this
 #   environment variable. "Quote" if more than one addr.
+#
 # EPICS_CA_AUTO_ADDR_LIST 
 #   YES = augment beacon/search dest ip
 #   addr list from network interfaces found; NO = only use
 #   EPICS_CA_ADDR_LIST to create this list.
+#
 # EPICS_CA_CONN_TMO 
 #   after not seeing a server beacon for this number
 #   of seconds the clients will send an echo request over
 #   tcp/ip to verify the connection.
+#
 # EPICS_CA_REPEATER_PORT CA repeater port number.
+#
 # EPICS_CA_SERVER_PORT CA server port number.
+#
+# EPICS_CA_MAX_ARRAY_BYTES
+#   This parameter specifies the size (in bytes) of the largest array 
+#   that the CA server will transport.
+#
 
 EPICS_CA_ADDR_LIST=""
 EPICS_CA_AUTO_ADDR_LIST=YES
 EPICS_CA_CONN_TMO=30.0
 EPICS_CA_REPEATER_PORT=5065
 EPICS_CA_SERVER_PORT=5064
+EPICS_CA_MAX_ARRAY_BYTES=16384
 
 #
 # These parameters are only used by the CA server library
@@ -111,40 +121,39 @@ EPICS_CA_SERVER_PORT=5064
 #   --------------------------------------------------
 #
 #   o Make sure that the broadcast addresses are identical on the
-#   server's host and on the client's host. This can be checked with
-#   "netstat -i" or "ifconfig -a".
+#   server's host and on the client's host. This can be checked 
+#   on UNIX with "netstat -i" or "ifconfig -a"; on vxWorks with
+#   ifShow; and on windows with ipconfig.
 #   
 #   o Make sure that the client and server are using the same UDP
 #   port. Check the server's port by running "netstat -a | grep nnn"
 #   where nnn is the port number involved. If you do not set 
-#   EPICS_CA_SERVER_PORT or EPICS_CAS_SERVER_PORT 
-#   then the default port will be 5064.
+#   EPICS_CA_SERVER_PORT or EPICS_CAS_SERVER_PORT then the default port 
+#   will be 5064.
 #   
 #   o Two servers can run on the same host with the same server port number
 #   if the following restrictions are understood (good luck). If the host has a
 #   modern IP kernel it is possible to have two servers on the same UDP port.
 #   It is not possible for two servers to run on the same host using the same 
-#   TCP IP server port. If the CA server library detects that a 2nd server is attempting
-#   to start on the same port as an existing CA server then both servers will use the 
-#   same UDP port if it is a modern IP kernel, and the 2nd server will
-#   be allocated a new TCP port. In this situation the clients will still be
-#   configured to use the same port number for both servers. The clients
-#   will find the 2nd server via the shared UDP port, and transparently
-#   connect to the 2nd server's allocated TCP port. Be aware that If there are 
-#   two server's running on the same host on the same UDP port then they will 
-#   both receive all UDP search requests sent as broadcasts, but will unfortunately (due to 
-#   what I consider to be a real weakness of most IP kernel implementations) only one 
-#   of the servers will typically receive UDP search requests sent to unicast addresses (i.e. 
-#   a specific host's ip address). 
+#   TCP IP server port. If the CA server library detects that a 2nd server is 
+#   attempting to start on the same port as an existing CA server then both 
+#   servers will use the same UDP port if it is a modern IP kernel, and the 2nd 
+#   server will be allocated a new TCP port. In this situation the clients will 
+#   still be configured to use the same port number for both servers. The clients
+#   will find the 2nd server via the shared UDP port, and transparently connect 
+#   to the 2nd server's allocated TCP port. Be aware that If there are two server's 
+#   running on the same host on the same UDP port then they will both receive all 
+#   UDP search requests sent as broadcasts, but will unfortunately (due to a common
+#   weakness of most IP kernel implementations) only one of the servers will 
+#   typically receive UDP search requests sent to unicast addresses (i.e. a specific 
+#   host's ip address). 
 #
 
-
 EPICS_CA_BEACON_PERIOD=15.0
 EPICS_CAS_INTF_ADDR_LIST=""
 EPICS_CAS_BEACON_ADDR_LIST=""
 EPICS_CAS_SERVER_PORT=
 
-
 # Log Server:
 # EPICS_IOC_LOG_PORT Log server port number etc.
 EPICS_IOC_LOG_PORT=7004
diff --git a/src/libCom/env/envDefs.h b/src/libCom/env/envDefs.h
index d3c013c4e..b260ec54a 100644
--- a/src/libCom/env/envDefs.h
+++ b/src/libCom/env/envDefs.h
@@ -80,6 +80,7 @@ epicsShareExtern READONLY ENV_PARAM EPICS_CA_BEACON_PERIOD;
 epicsShareExtern READONLY ENV_PARAM EPICS_CA_AUTO_ADDR_LIST;
 epicsShareExtern READONLY ENV_PARAM EPICS_CA_REPEATER_PORT;
 epicsShareExtern READONLY ENV_PARAM EPICS_CA_SERVER_PORT;
+epicsShareExtern READONLY ENV_PARAM EPICS_CA_MAX_ARRAY_BYTES;
 epicsShareExtern READONLY ENV_PARAM EPICS_CAS_INTF_ADDR_LIST;
 epicsShareExtern READONLY ENV_PARAM EPICS_CAS_BEACON_ADDR_LIST; 
 epicsShareExtern READONLY ENV_PARAM EPICS_CAS_SERVER_PORT;
@@ -92,12 +93,9 @@ epicsShareExtern READONLY ENV_PARAM EPICS_IOC_LOG_FILE_NAME;
 epicsShareExtern READONLY ENV_PARAM EPICS_IOC_LOG_FILE_COMMAND;
 epicsShareExtern READONLY ENV_PARAM EPICS_CMD_PROTO_PORT;
 epicsShareExtern READONLY ENV_PARAM EPICS_AR_PORT;
-#define EPICS_ENV_VARIABLE_COUNT 18
+#define EPICS_ENV_VARIABLE_COUNT 19
 
 /*
- * N elements added here to satisfy microsoft development tools
- * (includes room for nill termination)
- *
  * bldEnvData looks for "epicsShareExtern ENV_PARAM" so
  * this always needs to be divided into two lines
  */