Cisco Systems IGX 8400 Trunk Statistics for Troubleshooting, PCR Policing Application Example

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Universal Switching Module Enhanced

Figure 4-10shows an application example enabled by the PCR minimum value feature. In the example, less than 19.2 kbps Frame and ATM connections are set up across two carrier Frame and ATM networks with the policing function enabled at the boundary of the two carrier networks. The PCR value of segment 2 is set to the new minimum PCR policing value supported by the NNI facing BXM. For the BXM cards where the minimum PCR values are lowered, over-provisioning of bandwidth for low speed connections (on segment 2) is reduced or eliminated.

Figure 4-10 PCR Policing Application Example

 

 

 

 

Segment 1

 

Segment 2

FR end device

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BPX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FRSM

 

BXM

 

BXM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Policing enabled

NNI

Public

<19.2 kbps FR/ATM SIW or NIW connections

FR end device

IGX

UFM

 

UXM-E

 

 

 

ATM/FR network

NNI

Policing enabled

FR or ATM server

31230

Note Firmware revision Model B must be used on all cards to avoid card mismatch.

Trunk Statistics for Troubleshooting

In Release 9.3, switch software separates the UXM-E trunk statistics into physical statistics and logical statistics. (This separation is a deviation from other schemes for trunk statistics management.) The commands in this section are useful primarily for troubleshooting.

The CLI commands cnfphyslnstats, dspphyslnstatscnf, and dspphyslnstathist apply to the statistics for physical lines within an IMA trunk. You can enable the physical line statistics by using cnfphyslnstats, display the configuration for statistics with dspphyslnstatcnf, and display the statistics themselves with dspphyslnstathist.

The logical trunk statistics includes Qbin statistics, VI statistics, and gateway statistics. To enable statistics using the Cisco WAN Manager, you must use the TFTP mechanism. To configure the logical trunk statistics through the CLI, use cnftrkstats. The dsptrkstatcnf command shows the configuration of the trunk statistics. To display the logical trunk statistics, use dsptrkstathist. These three commands primarily apply to debugging.

Software also supports statistics for trunk ports. Use the dspportstats command to display these statistics.

In summary, the following commands let you manage trunk statistics: cnfphyslnstats, cnftrkstats, dspphyslnstatcnf, dspphyslnstathist, dsptrkstatcnf, dsptrkstathist, and dspportstats.

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Contents Trunk Cards Trunk Interface Cards Trunk Front Cards Card Acronym Card NameTrunk Operating Modes Trunk Card MaintenanceLoopback Test Introduction to the UXM-E Trunk Mode Universal Switching Module EnhancedDetermining the UXM-E’s Mode of Operation Example Networks with UXM-EsUXM-E Trunk Features UXM-Es in a Network with Heterogeneous TrafficBack Cards for the UXM-E UXM-E InterfacesCard Name Card Description UXM-E Front Card Cabled UXM-E Redundancy Switchover to a Redundant UXM-EMaximum Number of UXM-Es UXM-E Status LEDs Fail Active Standby Status of CardCard Mismatch Cellbus Bandwidth UsageUXM-E as a Clock Source Planning for Cellbus Bandwidth Allocation OC3Calculating Cellbus Bandwidth Changes ATM Across a Public ATM NetworkTypes of Supported Traffic UXM-E in Trunk ModeRouting over Cell Trunks Only Traffic from FastPacket-Based Cards Traffic TypeTypes of Connections on a UXM-E Trunk Inverse Multiplexing over ATM on IGX TrunksAdding an IGX Feeder Adding and Removing IMA Group Links Line RedundancyRouting Feeder Connection Cell Endpoint a Endpoint B Type IMA ProtocolTwo-Segment Connections Gateway Type Routing Load TypeRT-VBR Gwtypenone Three-Segment ConnectionsFeeder Connection Cell Endpoint a Endpoint B Type ABR.FST GwtypenoneUXM-E Atfr Activation and Configuration of a UXM-E in Trunk ModeOC3 STM1 SMF 20Cisco IGX 8400 Series Reference BXM Alarms for Physical Lines and Logical TrunksSCR and PCR Policing at Less than 50 CPS on UXM-E IGX-UXM-ETrunk Statistics for Troubleshooting 10 PCR Policing Application ExampleSummary Statistics UXM-E Interface CardsConnector/Indicator Function Connectors and LEDs for SMF and MMF Back CardsOC-3/STM1 Back Cards 11 BC-UAI-4-155-SMF Faceplate T3 Back Cards 12 BC-UAI-2-155-SMF FaceplateConnectors/Indicator Function Connectors and LEDs for BC-UAI-6-T3 and BC-UAI-3-T3BC-UAI-6-T3 Faceplate E3 Back Cards 14 BC-UAI-3-T3 FaceplateConnectors and LEDs for BC-UAI-6-E3 and BC-UAI-3-E3 BC-UAI-6-E3 FaceplateT1 Back Cards 16 BC-UAI-3-E3 FaceplateBC-UAI-8-T1-DB-15 Faceplate E1 Back Cards 18 BC-UAI-4-T1-DB-15 FaceplateBC-UAI-8-E1 DB-15 Faceplate Port 21 BC-UAI-4-E1 DB-15 Faceplate 22 BC-UAI-4-E1 BNC Faceplate NTM Status Cable Redundancy for the NTMNetwork Trunk Module T1 Interface Card BC-T1 BC-T1 Faceplate Description23 BC-T1 Faceplate BC-T1 Connections and Status LEDsE1 Interface Back Card BC-E1 BC-E1 Connections and Status LEDs RX-TXSubrate Interface Card BC-SR Connection/Indicator Function BC-SR Connections and Status LEDsY1 Interface Back Card BC-Y1 RX MON BC-Y1 Connections and Status LEDsTX MON 46Cisco IGX 8400 Series Reference
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