Cisco Systems IGX 8400 Series manual Inverse Multiplexing over ATM on Trunks, Dspcds

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Setting Up a UXM-E

The following is the command sequence for bringing up the trunk. You must bring up the trunk before you add connections. For detailed command descriptions, see the command references.

Step 1 To verify the correct card locations in both the local and remote nodes, enter:

dspcds

Step 2 Configure the cellbus bandwidth allocation for the card if you do not plan to rely on automatic increases from switch software. Use the superuser command cnfbusbw on the CLI to see the current allocation and increase the allocation.

Note Cisco recommends that you not allow oversubscription. Refer to the Cisco IGX 8400 Series Reference for the description of cellbus bandwidth allocation and the Cisco WAN Switching SuperUser Command Reference for a description of cnfbusbw. Any user can view the current cellbus bandwidth allocation by using the dspbusbw command.

Step 3 Activate the trunk by using uptrk. Execute this command on the nodes at both ends of the trunk. On the CLI, use the vt command to reach the far-end node to execute commands. The only trunk cards you can connect to a UXM-E trunk are another UXM-E trunk card or a BXM in trunk mode. The syntax of the single-port trunk specification is slot.port.

To specify an IMA trunk through the CLI, enter uptrk slot.first_line –last_line. The line numbers must be contiguous.

Step 4 At each end, configure trunk parameters as required by using cnftrk. Each type of trunk comes up with a default configuration, but you can alter the configuration with cnftrk. Refer to the cnftrk description in the Cisco WAN Switching Command Reference for the parameters that apply to each interface.

Step 5 Use addtrk to add the trunk. Adding the trunk makes it a usable resource, so you can subsequently add connections through Cisco WAN Manager or the CLI (addcon). Add the trunk at only one node. If, after you add the trunk, you later determine that changes to the trunk parameters are necessary, you can change certain parameters with cnftrk without taking the trunk out of service.

Step 6 Optionally, you can configure a UXM-E trunk as a clock source. Enter:

cnfclksrc

Step 7 Configure the cellbus bandwidth allocation with cnfbusbw if you plan to activate many ports or carry a large number of connections on the UXM-E trunk. Use dspbusbw or cnfbusbw to check cellbus usage and changes in bandwidth requirements for the UXM-E. For information on cellbus bandwidth needs, see the Cisco IGX 8400 Series Reference.

Step 8 To configure physical and logical trunk statistics, use cnfphyslnstats and cnftrkstats, respectively. See the Cisco IGX 8400 Series Reference regarding UXM-E trunk statistics.

Inverse Multiplexing over ATM on Trunks

An IMA lets you group physical T1 or E1 lines to form a logical trunk. A logical trunk consisting of more than one T1 or E1 line supports connections with data rates that are much higher than the T1 or E1 rate. System software lets you specify IMA so that one or more physical lines within the logical trunk can serve as backup if a line fails. IMA characteristics are as follows:

•All physical ports of an IMA trunk use the same line configuration.

Card Installation and Node Startup 3-11

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Contents Preparing the Cards Card Installation and Node StartupPreparing the Cards IGX 8410 Cards, Front View IGX 8410 Cards, Back View IGX 8420 Card Shelf, Front View IGX 8430 Back View Inserting Modules Inserting the Cards Hssi Making Signal ConnectionsBringing Up a UXM-E Trunk Connecting TrunksSetting Up a UXM-E Cable Management Dspcds Inverse Multiplexing over ATM on TrunksAdding Links to an IMA Feeder Group Adding an IMA Feeder TrunkRemoving Links from an IMA Feeder Group UXM-E Inverse Multiplexing ATM IMA LinesConnecting an NTM E1 or Subrate Trunk Connecting an NTM T1 or Y1 TrunkBringing Up a UXM-E in UNI or NNI Port Mode Connecting a CVM to a T1 or J1 Line Installing Voice CardsTDM Transport on the CVM Connecting a CVM to an E1 Line or a Subrate TrunkConnecting a UVM to T1 Lines Pass-Through and Standard External UVM T1 Cabling Connecting a UVM to E1 Lines Pass-Through and Standard External UVM E1 Cabling Connecting a UVM to J1 Lines 10 Pass-Through and Standard External UVM J1 Cabling 11 SDI and LDI Faceplates Making Serial Data ConnectionsConfiguring the Port Modes of the HDM Back Cards HDM and LDM Redundancy Configuring the Mode of an LDI Port13 Connecting a DTE or DCE Adapter Cable to an LDI Cable Redundancy on the UFMs Maximum Connections Per Port with Signalling ProtocolsSetting Up Frame Relay on a UFM Making Frame Relay Connections14 Y-Cable Redundancy with Single and Dual-Port Cabling Setting Up Frame Relay Ports and Connections UFM Connecting UFM CablingDeleting a Frame Relay Port Setting Up Frame Relay on an FRMCommands for T1/E1 Frame Relay Port Mode Selection for V.35 Frame Relay Card Redundancy 15 Setting the Port Mode DTE/DCE on an FRISetting Up Frame Relay Ports and Connections FRM Making Alarm Relay Output Connections 36Cisco IGX 8400 Series Installation and Configuration Attaching Peripherals Connecting a Single Network Management StationMaking External Clock Connections 16 Connecting the Control Terminal 17 LAN Connection to SCM LAN Connection for the Network Management StationConfiguring the LAN Port D2.cb1 LAN superuser IGX 42Cisco IGX 8400 Series Installation and Configuration Connecting a Network Management Station to Multiple Networks 20 Connecting a Network Printer Connecting the Printer21 Connecting Modems to an IGX Node Connecting a ModemInitial Startup of the IGX Connecting the Power Supply MonitorFail screen looks like this NPM Startup Diagnostic TestInspecting Status Lights Card Self TestIGX Configuration Summary Checking the Power Supplies AC Systems50Cisco IGX 8400 Series Installation and Configuration Interworking Connections in a Tiered Network Configuring an IGX Switch to Be an Interface ShelfConverting a Routing Node to an Interface Shelf Adding Connections in a Tiered Network through the CLI
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