Specifications
5-8 Cisco MGX 8220 Reference, Release 4.1
CESM Connections
BPX to BPX Segment
For the BPX segment, set up the connection in the same manner as that for FRSM. The connection
type should be specified as ABR, CBR, or VBR to match the connection type used at the connection
endpoint (for example, AUSM). The parameter values map directly from those specified at the
connection endpoint.
CESM Connections
Use the following procedure to setup a CESM connection.
Via the Command Line Interface (CLI)
Setting up a CESM connection is performed through the CLI. The procedure is to first add the line
using the add line command (addln) and then add and configure a channel using 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 a FRASM connection.
Via the Command Line Interface
Setting up a FRASM connection is performed through the Command Line Interface (CLI). There are
three basic types of connection which are:
• 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, refer to the “Frame Relay Access Service
Module” section in Chapter 4, “MGX 8220 Service Modules”.