Cisco Systems IGX 8400 Trunk Statistics for Troubleshooting

4-22 Cisco IGX 8400 Series Reference

Universal Switching Module Enhanced

Figure 4-10 shows 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

ATMnetworks with the policing function enabled at the boundary of the two carrier networks. The

PCR valueof 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

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. Youcan 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. Todisplay 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.

FR end device

FR or

ATM server

FRSM BXM

BPX

IGX

BXM

UFM UXM-E

Public

ATM/FR network

Policing enabled

31230

NNI

< 19.2 kbps FR/ATM SIW

or NIW connections

Segment 1 Segment 2