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Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Chapter
FRASM Connections
Via the Command-Line Interface
Setting up a CESM connection is performed through the command-line interface (CLI). The procedure
is to first add the line entering the add line command (addln) and then add and configure a channel
entering the add channel (addchan) command. In the addchan command the channel number, the cell
delay variation, the cell loss integration period, and buffer size are all specified. The command sequence
is
1. addln <line #>
2. addchan “chan_num CDV CellLossIntegPeriod bufsize”
chan_num -- value ranging from 16 to 19
16 - line 1, 17 - line 2, 18 - line 3, 19 - line 4
CDV -- Cell delay variation: Range 1000-65535 microseconds
CellLossIntegPeriod -- Cell loss integration period:
Range 1000-65535 milliseconds
bufsize -- egress bufsize: Min value: 0.6*CDV-T1, 0.7*CDV-E1.
Max value: 65535, 0 to auto-compute
Example:
addln 1
addchan
16 10000 2500 0
FRASM Connections
Use the following procedures to setup an FRASM connection.
Via the Command-Line Interface
Setting up an FRASM connection is performed through the CLI. There are three basic types of
connections.
• FRAS BNN connections, which are used to support connections that require an SNA/SDLC
interface at one end of the connection and a Frame Relay interface at the other.
• STUN connections, which are used to support connections that require SNA/SDLC interfaces at
both ends of the connection.
• BTUN connections, which are used to support connections that require 3270/bisynch interfaces at
both ends of the connection.
For more information about these types of connections, see Chapter 4, “MGX 8220 Service Modules,”
“Frame Relay Access Service Module” section.
For all three types of connections, the procedure is to first establish a physical line for the connection
entering the add line command (addln) in which the physical back card port is specified and then to
establish and configure ports on that line entering the add port (addport) command for each port.
In the addport command, the port number, line number, line speed, time slot, the port type, the
encoding type, and the interface type are specified.
To complete the connection, additional commands are used that are specific to the type of connection
being set up (FRAS BNN, STUN, or BSTUN).