Specifications
5-5
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 3 Enter the dsplns <logical slot> command to verify that the appropriate line is up and to display all
available lines on an SRM. Replace logical slot with the slot number of the SRM for which you are
displaying lines.
The Line State column shows whether a line is up or down as shown in the following example:
PXM1E_SJ.8.PXM.a > dsplns 31
Medium Medium VT
Sonet Line Line Line Frame Line VT Maping APS
Line State Type Lpbk Scramble Type Type Type Enabled
------------- ----- --------- ---- -------- ------ --------- ------ -------
31.1 Up sonetSts3 NoLo Enable ShortS vt15/vc11 asynch Disabl
The line state, which is either Up or Down, represents the administrative intent for the line. For example,
a line is reported as Down until you bring it up. Once you bring up the line, the line state remains Up
until you bring it down with the dnln command.
The alarm state indicates whether the line is communicating with another device. When the alarm state
is Clear, the devices at each end of the line have established physical layer communications. ATM
connectivity is later established when logical interfaces are configured on the line.
Configuring Lines on an SRM Card
All line types are brought up with a default configuration. If the default configuration matches the CPE
to which SRM will connect, no configuration is required. The following sections describe how to display
the configuration for SONET/SDH and T3 lines, and how to configure these lines when changes are
required.
Configuring a SONET/SDH Line
The following procedure describes how to view a SONET/SDH line configuration, and how to configure
the line on an SRME or SRME/B card.
Step 1 Establish a configuration session using a user name with GROUP1 privileges or higher.
Step 2 To display the current configuration of an SRME line, enter the dspln command as follows:
PXM1E_SJ.8.PXM.a > dspln -sonet X.1
If you are configuring a MGX 8850 (PXM1E/PXM45) switch, replace X with 15 for an SRME in the
upper bay, or 31 for an SRME in the lower bay. If you are configuring a MGX 8830 switch, replace X
with 7. SRME provides one line, so the line number is always one as shown in the following example:
PXM1E_SJ.8.PXM.a > dspln -sonet 31.1
Line Number : 31.1
Admin Status : Up
Loopback : NoLoop APS enabled : Disable
Frame Scrambling : Enable RDI-V Type : one bit
Xmt Clock source : localTiming RDI-P Type : one bit
Line Type : sonetSts3 VT Type : vt15/vc11
Medium Type(SONET/SDH) : SONET VT Mapping Type : asynchronous
Medium Time Elapsed : 508 VT Framing Type : N/A
Medium Valid Intervals : 0 VT Signalling Mode : N/A
Medium Line Type : ShortSMF VT Grouping Type : N/A
Step 3 To configure a SONET or SDH line, enter the cnfln command as follows: