Specifies the board number. FCCS is a fault-tolerant support system that allows backup ports to assume the functions of failed ports. For example, if port 0 fails for any reason, another port may be configured to assume the duties of the failed port. The keyword FCCS identifies this feature and must be followed by the list of fail-safe port numbers and a time increment, described below. This feature is optional. An FCCS port can also be an SOC (Switch On Close) port, meaning that the port will switch when it is closed. And as with FCCS, the port will switch if it fails. This feature is optional. Portno is a list of port numbers, separated by commas, specifying the primary ports you want protected by backup ports. FCCS boards have either 4 primary and 4 backup ports, or 8 primary and 8 backup ports. The valid port numbers are 0 through 3 for the 4-port version, and 0 through 7 for the 8-port version. Each of the ports has a switched connector. If the board fails for any reason, the traffic on these ports is automatically routed through the switched connector. These connectors must be cabled to secondary ports on the other FCCS connector panels. The secondary ports are numbered 8 through 11 on the 4-port version and 8 through 15 on the 8-port version. Only the primary ports need be designated in the FCCS configuration line, however all ports must be identified as described in the PORT Line section below. Specifies the time period for the sentinel relay timer. Each board resets its sentinel timer after the specified time period. If the board fails, and therefore can't set the timer, then control is passed automatically to another board, which continues the current processing. This feature ensures PerpetualProcessing and is transparent to the user. The valid range of values in milliseconds is from 50 to 5950 in 50 millisecond increments.

Specifies the protocol you want associated with the board specified in the previous MPCC line. Specifies the protocol-dependent protocol attributes. X.25 and SNA have ten (10) arguments, ASYNC has just one (1) argument, and BISYNC has no arguments.

.cu X.25 Dependent Attributes

Note: You must be familiar with the X.25 CCITT Yellow Book (1980) in order to understand the following values.

Specifies the maximum frame size in bytes. Specifies the retry count. Specifies the retry timer in milliseconds. Specifies the response delay timer in milliseconds. Specifies the inactive link timer in milliseconds. Specifies the idle channel timer in milliseconds. Specifies the Level 2 window size. Specifies the destination type in the XID command. It must be a number from 1-5:

 1 = AXE
 2 = CTSS
 3 = DEX
 4 = DMS
 5 = WESCOM

Specifies the destination identity in the XID command. It can be three to nine ASCII characters. Specifies the additional information in the XID command. It can be any ASCII string up to 20 characters long.

.cu ASYNC and 32PORT Dependent Attribute

Specifies the size of the transmit/receive buffers in bytes.

Specifies the port number of the previously specified board. Specifies the protocol. You must state the same protocol as you stated in the preceding PROTOCOL line. Specifies the protocol-dependent port attributes. X.25 has fourteen (14) arguments. ASYNC, 32PORT and BISYNC have none. SNA has 14 fixed arguments.

.cu X.25 Dependent Arguments

Note: You must be familiar with the X.25 CCITT Yellow Book (1980) in order to understand the following values.

Specifies the number of transmit buffers allocated for I frames. Specifies the number of transmit buffers allocated for S/U frames. Specifies the number of receive buffers allocated for I frames. Specifies the number of receive buffers allocated for S/U frames. Specifies the Level 1 transmit timeout. This argument should be 0 so that Level 1 calculates timeout from the baud rate. Specifies the modem control value for rts. Valid values are 1 which equals assert, 2 which equals drop, and 3 which equals auto. Specifies the modem control value for dtr. Valid values are 1 which equals assert, and 2 which equals drop. Specifies the line state between transmissions. Valid values are 0 which specifies a flag fill, and 1 which specifies a mark fill. Specifies the port configuration. A 1 makes the port a DCE, while a 3 makes the port a DTE. Specifies the data link receive mask. This argument must be 3. Specifies the number of data link retries after a transmit timeout. This argument should be zero since upper levels of X25 do retries. Specifies the baud rate of a transmission. All standard rates are supported. Some common rate values are 0 equals a modem, 13 equals 9600, and 26 equals 56KB. See the header file mp_port.h for other values. Specifies the physical data encoding. A 0 indicates NRZ, and a 1 indicates NRZI. Specifies the data link receive trace mode. This argument must be 0.

MPCC:0
PROTOCOL:X25:272:2:6000:1000:30000:20000:8:2:ccice1:remote
PORT:0:X25:8:16:8:16:0:1:1:0:1:3:0:0:0:0
PORT:1:X25:8:16:8:16:0:1:1:0:3:3:0:0:0:0

MPCC:1
PROTOCOL:ASYNC:128
PORT:0:ASYNC
PORT:1:ASYNC

MPCC:2
PROTOCOL:32PORT:128
PORT:0:32PORT
PORT:1:32PORT

MPCC:3
PROTOCOL:BISYNC
PORT:0:BISYNC
PORT:1:BISYNC

MPCC:4
PROTOCOL:SNA:272:4:800:200:20000:20000:8:2:acey:deucy
PORT:0:SNA:8:10:10:24:5:3:1:0:193:193:1:0:0:0
PORT:1:SNA:8:10:10:24:5:3:1:0:193:193:1:0:0:0