Specifications

5-7
Cisco MGX 8800/8900 Series Software Configuration Guide
Release 5.1, Part Number OL-6482-01, Rev. A0, January 25, 2005
Chapter 5 Preparing SRM Cards for Communications
Setting Up SRM Lines
Step 4 To verify your configuration changes, enter the dspln -sonet <X.1> command. Replace X with the slot
number of the SRM you are configuring.
Configuring T3 Lines
The following procedure describes how to configure T3 lines on SRM-3T3/C cards and on SRME/B
cards with T3 interfaces.
Step 1 Establish a configuration session using a user name with GROUP1 privileges or higher.
Step 2 If you do not know the line number you want to configure, enter the dsplns command to display a list
of the lines.
mgx8830b.1.PXM.a > dsplns <logical slot>
Remember that you cannot configure a line until you have brought it up as described in the section,
“Bringing Up Lines.”
In the following example, the user displays the line numbers for the SRM in slot 7.
-tt The TributaryType selects a tributary type for either SONET or SDH. SONET references
virtual tributary (VT) types, and SDH references virtual container (VC) types. Select the
tributary type that supports the line type used by the service modules using this
SONET/SDH line:
• T1 lines (VT15/VC11) = 1
• E1 lines (VT2/VC12) = 2
Note E1 lines (VT2/VC12) are supported only when the -slt option is set to 2 to select
SDH.
-tm The tributary mapping type can be configured as asynchronous or byte-synchronous. Type
a “1” or “2.”
• Asynchronous = 1
• Byte-synchronous (T1 tributary type only) = 2
Default: asynchronous
-tf The tributary framing type is either superframe or extended superframe. This option
applies only when the tributary mapping is byte-synchronous (-tm 2). Replace
TributaryFramingType with 2 to specify Superframe, or 3 to specify extended superframe.
-st The signaling transport mode applies only if you have selected byte-synchronous tributary
mapping (-tm 2). Replace SignallingTranportMode with either a 2 to specify transfer
mode, or a 3 to specify clear mode.
With transfer mode, the framing bit is transferred to the VT header.
With clear mode, the signaling bit is transferred to the VT header.
-tg The tributary grouping type applies to SDH. Replace TributaryGroupingType with a 2 to
specify AU3, or a 3 to specify AU4.
Table 5-1 Parameters for SONET Line Configuration (continued)
Parameter Description