Cisco Systems IGX 8400 manual Adding an IGX Feeder

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Universal Switching Module Enhanced

IMA characteristics are as follows:

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

The node maintains a set of retained links for the IMA trunk to keep it active. The IMA trunk does not fail unless the number of active trunks is less than the user-specified number of retained links.

The IMA trunk can provide a clock source or clock path (see cnftrk command). The first (the lowest numbered) available physical line is used. If this line fails, the next available line within the IMA provides the clock source or clock path.

Full support for individual physical line alarms and statistics.

To specify the range of ports for an IMA trunk, you can use either Cisco WAN Manager or the command-line interface (CLI). To define an IMA trunk on the CLI, use the uptrk command:

uptrk slot.start_port-end_port

For example, you could enter uptrk 8.1–4. Subsequently, you would refer to this logical trunk by using only the slot number and first port number—8.1 in this example—when you use other commands, such as addtrk, deltrk, cnftrk, and so on. Commands for viewing IMA information also include dspportstats, dspphyslns, dsptrkcnf, dspfdr, dspnode, and dspphyslnstathist.

Adding an IGX Feeder

The IMA feeder node feature provides redundancy in case one of the physical lines on an IMA trunk fails. This reduces the chance of a single point of failure when a single feeder trunk is out of service. In addition, this feature allows you to configure the services on a feeder node instead of a routing node.

Figure 4-5shows an example of an IGX feeder topology.

Figure 4-5 Sample IGX Feeder Topology

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Currently supported on the IGX, a Service Expansion Shelf (SES) can function as a feeder node connected to an IGX routing node using a UXM-E OC-3 interface. The UXM-E feeder node feature adds the capability to support the UXM-E interface and the IGX as a feeder node. The routing node can be an IGX or a BPX/BXM-T3, BPX/BXM-E3, or BNI. The UXM-E interface type T1/E1, nxT1/E1, T3/E3, and OC-3, SMF/MMF Extra Long Reach can be used to connect an IGX feeder node to the IGX/BPX routing node.

Note For a summary of commands you use to bring up an IGX node, refer to the section “IGX Configuration Summary” in Cisco IGX 8400 Series Installation and Configuration .

Trunk Cards 4-15

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Contents Trunk Cards Trunk Front Cards Card Acronym Card Name Trunk Interface CardsTrunk Card Maintenance Trunk Operating ModesLoopback Test Universal Switching Module Enhanced Introduction to the UXM-E Trunk ModeExample Networks with UXM-Es Determining the UXM-E’s Mode of OperationUXM-Es in a Network with Heterogeneous Traffic UXM-E Trunk FeaturesUXM-E Interfaces Back Cards for the UXM-ECard Name Card Description UXM-E Front Card UXM-E Status LEDs Fail Active Standby Status of Card Switchover to a Redundant UXM-EMaximum Number of UXM-Es Cabled UXM-E RedundancyCellbus Bandwidth Usage Card MismatchUXM-E as a Clock Source OC3 Planning for Cellbus Bandwidth AllocationATM Across a Public ATM Network Calculating Cellbus Bandwidth ChangesTraffic from FastPacket-Based Cards Traffic Type UXM-E in Trunk ModeRouting over Cell Trunks Only Types of Supported TrafficInverse Multiplexing over ATM on IGX Trunks Types of Connections on a UXM-E TrunkAdding an IGX Feeder Line Redundancy Adding and Removing IMA Group LinksGateway Type Routing Load Type IMA ProtocolTwo-Segment Connections Routing Feeder Connection Cell Endpoint a Endpoint B TypeABR.FST Gwtypenone Three-Segment ConnectionsFeeder Connection Cell Endpoint a Endpoint B Type RT-VBR GwtypenoneActivation and Configuration of a UXM-E in Trunk Mode UXM-E AtfrOC3 STM1 SMF 20Cisco IGX 8400 Series Reference IGX-UXM-E Alarms for Physical Lines and Logical TrunksSCR and PCR Policing at Less than 50 CPS on UXM-E BXM10 PCR Policing Application Example Trunk Statistics for TroubleshootingUXM-E Interface Cards Summary StatisticsConnectors and LEDs for SMF and MMF Back Cards Connector/Indicator FunctionOC-3/STM1 Back Cards 11 BC-UAI-4-155-SMF Faceplate 12 BC-UAI-2-155-SMF Faceplate T3 Back CardsConnectors and LEDs for BC-UAI-6-T3 and BC-UAI-3-T3 Connectors/Indicator FunctionBC-UAI-6-T3 Faceplate 14 BC-UAI-3-T3 Faceplate E3 Back CardsBC-UAI-6-E3 Faceplate Connectors and LEDs for BC-UAI-6-E3 and BC-UAI-3-E316 BC-UAI-3-E3 Faceplate T1 Back CardsBC-UAI-8-T1-DB-15 Faceplate 18 BC-UAI-4-T1-DB-15 Faceplate E1 Back CardsBC-UAI-8-E1 DB-15 Faceplate Port 21 BC-UAI-4-E1 DB-15 Faceplate 22 BC-UAI-4-E1 BNC Faceplate Cable Redundancy for the NTM NTM StatusNetwork Trunk Module BC-T1 Faceplate Description T1 Interface Card BC-T1BC-T1 Connections and Status LEDs 23 BC-T1 FaceplateE1 Interface Back Card BC-E1 RX-TX BC-E1 Connections and Status LEDsSubrate Interface Card BC-SR BC-SR Connections and Status LEDs Connection/Indicator FunctionY1 Interface Back Card BC-Y1 BC-Y1 Connections and Status LEDs RX MONTX MON 46Cisco IGX 8400 Series Reference