Troubleshooting guide

9-2
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 9 Troubleshooting CES Connections and Network Clocking
Performing Basic Checks
Performing Basic Checks
This procedure outlines the steps for performing basic interface checks of the CES circuit configuration.
Always check the following when a CES circuit fails to function:
• For hard PVCs, do the VPI and VCI numbers match those assigned by the service provider?
• For shaped VP tunnels, is the configured transmission rate within the range contracted with the
service provider?
At the ATM switch router, use the following commands to check the CES configuration:
Follow these steps to troubleshoot the CES configuration:
Step 1 Use the show ces circuit command to display the VPI and VCI configuration:
Switch# show ces circuit interface cbr 3/1/0 1
Circuit: Name CBR3/1/0:1, Circuit-state ADMIN_UP / oper-state UP Interface CBR3
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 1
Channels used by this circuit: 1
Cell-Rate: 172, Bit-Rate 64000
cas OFF, cell_header 0x100 (vci = 16)
Configured CDV 2000 usecs, Measured CDV unavailable
De-jitter: UnderFlow unavailable, OverFlow unavaliable
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcLoc, maxQueueDepth 81, startDequeueDepth 64
Partial Fill: 47, Structured Data Transfer 1
HardPVC
src: CBR3/1/0 vpi 0, vci 16
Dst: ATM1/1/1 vpi 1, vci 101
Step 2 Check the Dst field to confirm that the VPI and VCI values match those assigned by the service provider.
If not, reconfigure the CBR interface using the ces pvc command.
Step 3 Use the show atm vp command to display the connection traffic table index configuration for the shaped
VP tunnel:
Switch# show atm vp interface atm 1/1/1 1
Interface: ATM1/1/1, Type: oc3suni
VPI = 1
Status: SHAPED TUNNEL
Time-since-last-status-change: 13:59:23
Connection-type: PVP
Cast-type: point-to-point
Usage-Parameter-Control (UPC): pass
Wrr weight: 2
Number of OAM-configured connections: 0
OAM-configuration: disabled
Command Purpose
show ces circuit interface cbr card/subcard/port
circuit-id
Confirms the configuration on the CES
interface.
show atm vp interface atm card/subcard/port vpi Confirms the configuration of the shaped
VP tunnel.
show dcu leds Confirms the status of the CES port
LEDs.