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Cisco VISM Installation and Configuration Guide
Release 3.0, Part Number OL-2521-01 Rev. D0, June 2004
Chapter4 Configuring VISM Features
Configuring Additional VISM Features
MGX 8000 Series Implementation Enhancements
The following enhancements are supported with this release to you with additional implementation of
your MGX 8000 Series switch:
•Additional VBR Enhancements
•Expanded Clock Source Selection
•Private Network-to-Network Interface Priority Routing
•Additional SPVC Connection Management Capabilities
•192 T1/248 E1 DS0 Support with High Complexity Codecs on VISM-PR
•Channel Alarm Enhancement
•VISM TDM Line Statistics Collection

Additional VBR Enhancements

Setting connections between a VISM-PR card and a RPM-PR card in your MGX 8000 Series switch
chassis requires you to use the new VBR (NRT) 3 connection type. Use the modified addcon or cn fcon
commands to configure this connection type. In addition, the following new connection service types
can be configured with the modified commands in this release:
•VBR (RT) 2
•VBR (RT) 3
•VBR (NRT) 2

Expanded Clock Source Selection

This release supports an expanded clock source selection, which allows you to con figure any VISM-PR
card line as the clock source. You cannot delete a VISM-PR line that is configured as the clock source;
you must configure a different line as the clock source and then you can delete the original clock source
line. The previously released CLI commands allow you to use this feature.
Note This feature requires you to use a PXM1E or PXM45 in your M GX 80 00 Ser ies sw itch ch ass is.

Private Network-to-Network Interface Priority Routing

This release supports the Private Network-to-Network Interface (PNNI) routing priority feature. This
feature allows you to specify connections with a routing prior it y. The PNNI controlle r uses y our
configuration selections to route the higher priority connections before routing the lower priority
connections. Use the cnfpncon command to configure a routing priority for a specified connection.
Note This feature requires you to use a PXM1E or PXM45 in your M GX 80 00 Ser ies sw itch ch ass is.