Software Configuration Guide
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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide Cisco IOS Release 12.1(20)EA2 May 2004 Corporate Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 526-4100 Customer Order Number: DOC-7811380= Text Part Number: 78-11380-10
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide Cisco IOS Release 12.1(20)EA2 May 2004 Corporate Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 526-4100 Customer Order Number: DOC-7811380= Text Part Number: 78-11380-10
Software Configuration Guide
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... SUPPLIERS ARE PROVIDED "AS IS" WITH ALL FAULTS. All other trademarks mentioned in the United States and certain other company. (0403R) Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide Copyright © 2001-2004 Cisco Systems, Inc. THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH...
... SUPPLIERS ARE PROVIDED "AS IS" WITH ALL FAULTS. All other trademarks mentioned in the United States and certain other company. (0403R) Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide Copyright © 2001-2004 Cisco Systems, Inc. THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH...
Software Configuration Guide
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... Design Concepts for Using the Switch 1-10 Small to Medium-Sized Network Configuration 1-13 Collapsed Backbone and Switch Cluster Configuration 1-14 Hotel Network Configuration 1-15 Service-Provider Central-Office Configuration 1-18 Large Campus Configuration 1-19 Multidwelling Network Using Catalyst 2950 Switches 1-20 Long-Distance, High-Bandwidth Transport Configuration 1-22 Where to Go Next 1-22 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide iii
... Design Concepts for Using the Switch 1-10 Small to Medium-Sized Network Configuration 1-13 Collapsed Backbone and Switch Cluster Configuration 1-14 Hotel Network Configuration 1-15 Service-Provider Central-Office Configuration 1-18 Large Campus Configuration 1-19 Multidwelling Network Using Catalyst 2950 Switches 1-20 Long-Distance, High-Bandwidth Transport Configuration 1-22 Where to Go Next 1-22 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide iii
Software Configuration Guide
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... E R Using the Command-Line Interface 2-1 Cisco IOS Command Modes 2-1 Getting Help 2-3 Abbreviating ...Switch Alarm Configuration 3-4 Configuring the Power Supply Alarm 3-5 Setting the Power Mode 3-5 Setting the Power Supply Alarm Options 3-5 Configuring the Switch Temperature Alarms 3-6 Setting a Secondary Temperature Threshold for the Switch 3-6 Associating the Temperature Alarms to a Relay 3-7 Configuring the FCS Bit Error Rate Alarm 3-7 Setting the FCS Error Threshold 3-8 Setting the FCS Error Hysteresis Threshold 3-8 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide...
... E R Using the Command-Line Interface 2-1 Cisco IOS Command Modes 2-1 Getting Help 2-3 Abbreviating ...Switch Alarm Configuration 3-4 Configuring the Power Supply Alarm 3-5 Setting the Power Mode 3-5 Setting the Power Supply Alarm Options 3-5 Configuring the Switch Temperature Alarms 3-6 Setting a Secondary Temperature Threshold for the Switch 3-6 Associating the Temperature Alarms to a Relay 3-7 Configuring the FCS Bit Error Rate Alarm 3-7 Setting the FCS Error Threshold 3-8 Setting the FCS Error Hysteresis Threshold 3-8 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide...
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... 4-8 CMS Plug-In 4-9 Cross-Platform Considerations 4-9 HTTP Access to CMS 4-9 Specifying an HTTP Port (Nondefault Configuration Only) 4-10 Configuring an Authentication Method (Nondefault Configuration Only) 4-10 Displaying CMS 4-10 Launching CMS 4-10 Front Panel View 4-13 Topology View 4-14 CMS Icons 4-15 Where to Go Next 4-15 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide v
... 4-8 CMS Plug-In 4-9 Cross-Platform Considerations 4-9 HTTP Access to CMS 4-9 Specifying an HTTP Port (Nondefault Configuration Only) 4-10 Configuring an Authentication Method (Nondefault Configuration Only) 4-10 Displaying CMS 4-10 Launching CMS 4-10 Front Panel View 4-13 Topology View 4-14 CMS Icons 4-15 Where to Go Next 4-15 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide v
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... 5-16 Displaying Scheduled Reload Information 5-17 Configuring IE2100 CNS Agents 6-1 Understanding IE2100 Series Configuration Registrar Software 6-1 CNS Configuration Service 6-2 CNS Event Service 6-3 NameSpace Mapper 6-3 What You Should Know About ConfigID, DeviceID, and Host Name 6-3 ConfigID 6-3 DeviceID 6-4 Host Name and DeviceID 6-4 Using Host Name, DeviceID, and ConfigID 6-4 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide vi 78-11380-10
... 5-16 Displaying Scheduled Reload Information 5-17 Configuring IE2100 CNS Agents 6-1 Understanding IE2100 Series Configuration Registrar Software 6-1 CNS Configuration Service 6-2 CNS Event Service 6-3 NameSpace Mapper 6-3 What You Should Know About ConfigID, DeviceID, and Host Name 6-3 ConfigID 6-3 DeviceID 6-4 Host Name and DeviceID 6-4 Using Host Name, DeviceID, and ConfigID 6-4 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide vi 78-11380-10
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... Cluster Standby Groups 7-12 Automatic Recovery of Cluster Configuration 7-14 IP Addresses 7-14 Host Names 7-15 Passwords 7-15 SNMP Community Strings 7-15 TACACS+ and RADIUS 7-16 Access Modes in CMS 7-16 Management VLAN 7-16 LRE Profiles 7-17 Availability of Switch-Specific Features in Switch Clusters 7-17 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide vii
... Cluster Standby Groups 7-12 Automatic Recovery of Cluster Configuration 7-14 IP Addresses 7-14 Host Names 7-15 Passwords 7-15 SNMP Community Strings 7-15 TACACS+ and RADIUS 7-16 Access Modes in CMS 7-16 Management VLAN 7-16 LRE Profiles 7-17 Availability of Switch-Specific Features in Switch Clusters 7-17 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide vii
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... 8-16 Default System Name and Prompt Configuration 8-16 Configuring a System Name 8-16 Configuring a System Prompt 8-17 Understanding DNS 8-17 Default DNS Configuration 8-18 Setting Up DNS 8-18 Displaying the DNS Configuration 8-19 Creating a Banner 8-19 Default Banner Configuration 8-19 Configuring a Message-of-the-Day Login Banner 8-20 Configuring a Login Banner 8-21 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide viii 78-11380-10
... 8-16 Default System Name and Prompt Configuration 8-16 Configuring a System Name 8-16 Configuring a System Prompt 8-17 Understanding DNS 8-17 Default DNS Configuration 8-18 Setting Up DNS 8-18 Displaying the DNS Configuration 8-19 Creating a Banner 8-19 Default Banner Configuration 8-19 Configuring a Message-of-the-Day Login Banner 8-20 Configuring a Login Banner 8-21 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide viii 78-11380-10
Software Configuration Guide
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... the TACACS+ Server Host and Setting the Authentication Key 9-13 Configuring TACACS+ Login Authentication 9-14 Configuring TACACS+ Authorization for Privileged EXEC Access and Network Services 9-16 Starting TACACS+ Accounting 9-17 Displaying the TACACS+ Configuration 9-17 Controlling Switch Access with RADIUS 9-18 Understanding RADIUS 9-18 RADIUS Operation 9-19 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide ix
... the TACACS+ Server Host and Setting the Authentication Key 9-13 Configuring TACACS+ Login Authentication 9-14 Configuring TACACS+ Authorization for Privileged EXEC Access and Network Services 9-16 Starting TACACS+ Accounting 9-17 Displaying the TACACS+ Configuration 9-17 Controlling Switch Access with RADIUS 9-18 Understanding RADIUS 9-18 RADIUS Operation 9-19 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide ix
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... Voice VLAN Ports 10-7 Using 802.1x with VLAN Assignment 10-7 Using 802.1x with Guest VLAN 10-8 Configuring 802.1x Authentication 10-9 Default 802.1x Configuration 10-9 802.1x Configuration Guidelines 10-10 Upgrading from a Previous Software Release 10-11 Enabling 802.1x Authentication 10-11 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide x 78-11380-10
... Voice VLAN Ports 10-7 Using 802.1x with VLAN Assignment 10-7 Using 802.1x with Guest VLAN 10-8 Configuring 802.1x Authentication 10-9 Default 802.1x Configuration 10-9 802.1x Configuration Guidelines 10-10 Upgrading from a Previous Software Release 10-11 Enabling 802.1x Authentication 10-11 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide x 78-11380-10
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... 11-10 Setting the Interface Speed and Duplex Parameters on a Non-LRE Switch Port 11-12 Setting the Interface Speed and Duplex Parameters on an LRE Switch Port 11-12 Configuring Media Types for Gigabit Ethernet Interfaces on LRE Switches 11-13 Configuring IEEE 802.3z Flow Control on Gigabit Ethernet Ports 11-13 Adding... Interface and Controller Status 11-15 Clearing and Resetting Interfaces and Counters 11-16 Shutting Down and Restarting the Interface 11-17 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xi
... 11-10 Setting the Interface Speed and Duplex Parameters on a Non-LRE Switch Port 11-12 Setting the Interface Speed and Duplex Parameters on an LRE Switch Port 11-12 Configuring Media Types for Gigabit Ethernet Interfaces on LRE Switches 11-13 Configuring IEEE 802.3z Flow Control on Gigabit Ethernet Ports 11-13 Adding... Interface and Controller Status 11-15 Clearing and Resetting Interfaces and Counters 11-16 Shutting Down and Restarting the Interface 11-17 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xi
Software Configuration Guide
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...Links 13-9 Guidelines for Using LRE Profiles 13-10 CPE Ethernet Link Guidelines 13-11 Guidelines for Configuring Cisco 575 LRE CPEs and 576 LRE 997 CPEs 13-11 Guidelines for Configuring Cisco 585 LRE CPEs 13-12 Assigning a Global Profile to All LRE Ports 13-12 Assigning a ... 13-14 Precedence 13-15 Profile Locking 13-15 Link Qualification and SNR Margins 13-16 Configuring LRE Link Persistence 13-19 Configuring LRE Link Monitor 13-20 Configuring LRE Interleave 13-20 Configuring Upstream Power Back-Off 13-21 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xii 78-11380-10
...Links 13-9 Guidelines for Using LRE Profiles 13-10 CPE Ethernet Link Guidelines 13-11 Guidelines for Configuring Cisco 575 LRE CPEs and 576 LRE 997 CPEs 13-11 Guidelines for Configuring Cisco 585 LRE CPEs 13-12 Assigning a Global Profile to All LRE Ports 13-12 Assigning a ... 13-14 Precedence 13-15 Profile Locking 13-15 Link Qualification and SNR Margins 13-16 Configuring LRE Link Persistence 13-19 Configuring LRE Link Monitor 13-20 Configuring LRE Interleave 13-20 Configuring Upstream Power Back-Off 13-21 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xii 78-11380-10
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... LRE Status 13-27 Configuring STP 14-1 Understanding Spanning-Tree Features 14-1 STP Overview 14-2 Spanning-Tree Topology and BPDUs 14-3 Bridge ID, Switch Priority, and Extended System...Configuring Spanning-Tree Features 14-11 Default Spanning-Tree Configuration 14-11 Spanning-Tree Configuration Guidelines 14-12 Changing the Spanning-Tree Mode 14-13 Disabling Spanning Tree 14-14 Configuring the Root Switch 14-14 Configuring a Secondary Root Switch 14-16 Configuring the Port Priority 14-17 Configuring the Path Cost 14-19 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide...
... LRE Status 13-27 Configuring STP 14-1 Understanding Spanning-Tree Features 14-1 STP Overview 14-2 Spanning-Tree Topology and BPDUs 14-3 Bridge ID, Switch Priority, and Extended System...Configuring Spanning-Tree Features 14-11 Default Spanning-Tree Configuration 14-11 Spanning-Tree Configuration Guidelines 14-12 Changing the Spanning-Tree Mode 14-13 Disabling Spanning Tree 14-14 Configuring the Root Switch 14-14 Configuring a Secondary Root Switch 14-16 Configuring the Port Priority 14-17 Configuring the Path Cost 14-19 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide...
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...-13 Configuring the Root Switch 15-14 Configuring a Secondary Root Switch 15-16 Configuring the Port Priority 15-17 Configuring the Path Cost 15-18 Configuring the Switch Priority 15-19 Configuring the Hello Time 15-19 Configuring the Forwarding-Delay Time 15-20 Configuring the Maximum-Aging Time 15-21 Configuring the Maximum-Hop Count 15-21 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xiv...
...-13 Configuring the Root Switch 15-14 Configuring a Secondary Root Switch 15-16 Configuring the Port Priority 15-17 Configuring the Path Cost 15-18 Configuring the Switch Priority 15-19 Configuring the Hello Time 15-19 Configuring the Forwarding-Delay Time 15-20 Configuring the Maximum-Aging Time 15-21 Configuring the Maximum-Hop Count 15-21 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xiv...
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... T E R Specifying the Link Type to Ensure Rapid Transitions 15-22 Restarting the Protocol Migration Process 15-22 Displaying the MST Configuration and Status 15-23 Configuring Optional Spanning-Tree Features 16-1 Understanding Optional Spanning-Tree Features 16-1 Understanding Port Fast 16-2 Understanding BPDU Guard 16-2 Understanding BPDU Filtering... 16-19 Displaying the Spanning-Tree Status 16-20 Configuring VLANs 17-1 Understanding VLANs 17-1 Supported VLANs 17-2 VLAN Port Membership Modes 17-3 Contents 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xv
... T E R Specifying the Link Type to Ensure Rapid Transitions 15-22 Restarting the Protocol Migration Process 15-22 Displaying the MST Configuration and Status 15-23 Configuring Optional Spanning-Tree Features 16-1 Understanding Optional Spanning-Tree Features 16-1 Understanding Port Fast 16-2 Understanding BPDU Guard 16-2 Understanding BPDU Filtering... 16-19 Displaying the Spanning-Tree Status 16-20 Configuring VLANs 17-1 Understanding VLANs 17-1 Supported VLANs 17-2 VLAN Port Membership Modes 17-3 Contents 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xv
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... Token Ring VLANs 17-5 Normal-Range VLAN Configuration Guidelines 17-5 VLAN Configuration Mode Options 17-6 VLAN Configuration in config-vlan Mode 17-6 VLAN Configuration in VLAN Configuration Mode 17-6 Saving VLAN Configuration 17-7 Default Ethernet VLAN Configuration 17-7 Creating or Modifying an Ethernet VLAN...Cost 17-24 Configuring VMPS 17-25 Understanding VMPS 17-25 Dynamic Port VLAN Membership 17-26 VMPS Database Configuration File 17-26 Default VMPS Client Configuration 17-27 VMPS Configuration Guidelines 17-27 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xvi 78-...
... Token Ring VLANs 17-5 Normal-Range VLAN Configuration Guidelines 17-5 VLAN Configuration Mode Options 17-6 VLAN Configuration in config-vlan Mode 17-6 VLAN Configuration in VLAN Configuration Mode 17-6 Saving VLAN Configuration 17-7 Default Ethernet VLAN Configuration 17-7 Creating or Modifying an Ethernet VLAN...Cost 17-24 Configuring VMPS 17-25 Understanding VMPS 17-25 Dynamic Port VLAN Membership 17-26 VMPS Database Configuration File 17-26 Default VMPS Client Configuration 17-27 VMPS Configuration Guidelines 17-27 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xvi 78-...
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... VTP Pruning 18-4 Configuring VTP 18-6 Default VTP Configuration 18-6 VTP Configuration Options 18-7 VTP Configuration in Global Configuration Mode 18-7 VTP Configuration in VLAN Configuration Mode 18-7 VTP Configuration Guidelines 18-8 Domain ...Configuration Requirements 18-9 Configuring a VTP Server 18-9 Configuring a VTP Client 18-11 Disabling VTP (VTP Transparent Mode) 18-12 Enabling VTP Version 2 18-13 Enabling VTP Pruning 18-14 Adding a VTP Client Switch to a VTP Domain 18-14 Monitoring VTP 18-16 Contents 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide...
... VTP Pruning 18-4 Configuring VTP 18-6 Default VTP Configuration 18-6 VTP Configuration Options 18-7 VTP Configuration in Global Configuration Mode 18-7 VTP Configuration in VLAN Configuration Mode 18-7 VTP Configuration Guidelines 18-8 Domain ...Configuration Requirements 18-9 Configuring a VTP Server 18-9 Configuring a VTP Client 18-11 Disabling VTP (VTP Transparent Mode) 18-12 Enabling VTP Version 2 18-13 Enabling VTP Pruning 18-14 Adding a VTP Client Switch to a VTP Domain 18-14 Monitoring VTP 18-16 Contents 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide...
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...VLAN 19-1 Configuring Voice VLAN 19-2 Default Voice VLAN Configuration 19-2 Voice VLAN Configuration Guidelines 19-3 Configuring a Port to Connect to a Cisco 7960 IP Phone 19-3 Configuring Ports to Carry Voice Traffic in 802.1Q Frames 19-4 Configuring Ports to Carry...Configuration 20-8 Configuring IGMP Snooping and MVR 21-1 Understanding IGMP Snooping 21-1 IGMP Versions 21-2 Joining a Multicast Group 21-3 Leaving a Multicast Group 21-4 Immediate-Leave Processing 21-5 IGMP Report Suppression 21-5 Source-Only Networks 21-5 xviii Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide...
...VLAN 19-1 Configuring Voice VLAN 19-2 Default Voice VLAN Configuration 19-2 Voice VLAN Configuration Guidelines 19-3 Configuring a Port to Connect to a Cisco 7960 IP Phone 19-3 Configuring Ports to Carry Voice Traffic in 802.1Q Frames 19-4 Configuring Ports to Carry...Configuration 20-8 Configuring IGMP Snooping and MVR 21-1 Understanding IGMP Snooping 21-1 IGMP Versions 21-2 Joining a Multicast Group 21-3 Leaving a Multicast Group 21-4 Immediate-Leave Processing 21-5 IGMP Report Suppression 21-5 Source-Only Networks 21-5 xviii Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide...
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...-27 Configuring Port-Based Traffic Control 22-1 Configuring Storm Control 22-1 Understanding Storm Control 22-2 Default Storm Control Configuration 22-2 Enabling Storm Control 22-2 Disabling Storm Control 22-4 Configuring Protected Ports 22-4 Configuring Port Blocking 22-5 Blocking Flooded Traffic on an Interface 22-5 Resuming Normal Forwarding on a Port 22-6 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide...
...-27 Configuring Port-Based Traffic Control 22-1 Configuring Storm Control 22-1 Understanding Storm Control 22-2 Default Storm Control Configuration 22-2 Enabling Storm Control 22-2 Disabling Storm Control 22-4 Configuring Protected Ports 22-4 Configuring Port Blocking 22-5 Blocking Flooded Traffic on an Interface 22-5 Resuming Normal Forwarding on a Port 22-6 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide...
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... a command or member switch of other standby command switches and member switches through the command-switch management VLAN. Refer to the switch configuration guide of another cluster. • A Catalyst 2950 LRE or Catalyst 2955 member or candidate switch is connected to the command switch through at least one common VLAN. • If a non-LRE Catalyst 2950 member or candidate switch is running Cisco IOS Release 12...
... a command or member switch of other standby command switches and member switches through the command-switch management VLAN. Refer to the switch configuration guide of another cluster. • A Catalyst 2950 LRE or Catalyst 2955 member or candidate switch is connected to the command switch through at least one common VLAN. • If a non-LRE Catalyst 2950 member or candidate switch is running Cisco IOS Release 12...