Cisco Systems IGX 8400 manual Trunk Operating Modes, Trunk Card Maintenance, Loopback Test

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Common Alarms, Controls, and Indicators

Trunk Operating Modes

IGX trunk cards operate in either simple gateway or cell forwarding mode. Simple gateway supports service interworking, which lets Frame Relay connections terminate at ATM endpoints. For a description of simple and complex gateways, service and network interworking, tiered networks, trunks, ATM protocols, and cell and header formats, refer to the Cisco Systems Overview.

Trunk Card Maintenance

Trunk cards require no maintenance except for replacement after a confirmed failure.

Loopback Test

A trunk loopback test runs when an ATM trunk detects an integrated alarm. The loopback test indicates if the line or the card is faulty. A loopback test “pass” means the line is faulty, so a line alarm is subsequently indicated. A loopback test “fail” means the card is faulty. If the card is faulty, a switch occurs to an available Y-cable equipped redundant card.

Common Alarms, Controls, and Indicators

Front cards and back cards have faceplates with indicator LEDs. Most cards have both a green Active LED and a red Fail LED at the bottom of the faceplate. For definitions of the port status LEDs on a back card, refer to the section that describes the back card. Table 4-3describes the common card status indicators for LEDs.

Note In slots where no back card exists, a blank faceplate must reside to block Electromagnetic

Interference (EMI) and Radio Frequency Interference (RFI) and to ensure correct air flow.

Table 4-3

Common Card Status Indicators

 

 

 

Indicators

Status

Meaning

 

 

 

Fail

ON Steady

Indicates an error occurred. First, reset the card with the resetcd f

 

 

command. If the LED comes on again, call the TAC.

 

 

 

Fail

Blinking

On an NPM in a redundant system, this combination indicates that

 

 

the card is being updated.

 

 

 

Active

ON steady

When steadily on, this combination indicates the card is active and

 

 

carrying traffic or processing data.

 

 

 

Active

ON momentarily

When momentarily on, indicates the card executed a self-test.

 

 

 

BOTH

OFF

Indicates the card is either part of a redundant pair and is in standby

 

 

or is not being used at all.

 

 

 

BOTH

ON

Indicates the card failed but remains active because no standby card

 

 

is available. One or more lines failed, but others remain active.

 

 

 

Trunk Cards 4-3

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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
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