Cisco WS-C4507R User Manual

© 2004 Cisco Systems, Inc. All rights reserved. Printed in USA.
Presentation_ID.scr
1
© 2004 Cisco Systems, Inc. All rights reserved.
RST-3508
9805_05_2004_c2
CISCO CATALYST 4000 AND 4500
TROUBLESHOOTING
SESSION RST-3508
222
© 2004 Cisco Systems, Inc. All rights reserved.
RST-3508
9805_05_2004_c2
Troubleshooting
• Connectivity
• Performance
• Unexpected feature behavior
Which then impacts connectivity and/or
performance

Cisco WS-C4507R Specifications

General

Brand	Cisco
Model	WS-C4507R
Category	Network Router
Language	English

Summary

Cisco Catalyst 4000/4500 Troubleshooting Introduction

Troubleshooting Topics Overview

Cisco Catalyst 4500 IOS Supervisor Options

Catalyst 4500 Supervisor Engine Key Differences

Disaster Recovery for Network Boot

Supervisor Redundancy Overview

Supervisor Redundancy (4507R/4510R) Details

Explains Route Processor Redundancy (RPR) and active/standby supervisor roles.

Supervisor Switchover Process

Power Supply Redundancy

HSRP Redundancy

Port Channel Redundancy

Channel Troubleshooting Commands

High CPU Usage on Supervisor II

Cisco IOS Supervisor CPU Usage

CPU Troubleshooting Commands for Cisco IOS

Lists commands to diagnose and monitor CPU utilization on IOS supervisors.

High CPU Usage and QoS Interaction

CPU Statistics and Troubleshooting Fields

Show Platform CPU Statistics Fields

Details the fields and data presented in CPU statistics commands.

Monitoring CPU on Cisco Catalyst 4500

L2 Forwarding Tables for Reachability

Interface Error Counters Overview

Interface Error Counters (Continued)

Port Troubleshooting Commands for Connectivity

Useful commands to diagnose and resolve port connectivity issues.

Port Troubleshooting Commands for Performance

Port Troubleshooting Commands for Connectivity and Performance

Trunk Troubleshooting

Spanning Tree Support Overview

Spanning Tree Support Details

Unicast Packet Forwarding Concepts

Checking Hardware FIB Table

Checking Software Routing Table

Checking Hardware FIB Table Details

Checking ARP Table for Next Hop Neighbor

Checking Adjacency Table (HW)

Multicast Packet Forwarding Introduction

Multicast Group and Router Check

Catalyst 4500 IOS Multicast Features

Checking IGMP Group Membership

Checking Multicast MAC Address

Cisco IOS Multicast Routing Table Check

Checking MFIB Table (HW)

Different Types of ACLs

ACL Hardware Programming

Cisco IOS Supervisor ACL TCAM Details

Applying RACL/PACL

ACL Main Issues

ACL High CPU Issues

Discusses how denied traffic and logging ACEs can impact CPU usage.

ACL TCAM Usage

Security ACL Feature TCAM

When ACLs Are Misbehaving

Catalyst 4500 QoS Capabilities

QoS on Supervisor I/II (Catalyst OS)

Supervisor II QoS Configuration

Cisco IOS QoS Flow Summary

Tx Queuing and Scheduling

Scheduling: Shaping

Scheduling: Sharing

QoS Issues and Port Trust State

Packet Classification and Marking

QoS TCAM Usage and Optimization

COS/DSCP Mapping

Classification/TOS Re-Write Summary

Policing on Supervisor II+/IV/V

Policing Issues and Utilization

Policing Configuration Check

Policing Burst Size

Policed DSCP Mapping

Packet Transmit Queuing

Input/Output Policer Rules Summary

Dynamic Buffer Limiting (DBL)

Enabling QoS and DBL on Cisco IOS Supervisors

DBL Troubleshooting