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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... Checking and Saving the Running Configuration 5-11 Modifying the Startup Configuration 5-11 Default Boot Configuration 5-12 Automatically Downloading a Configuration File 5-12 Specifying the Filename to Read and Write the System Configuration 5-12 Booting Manually 5-13 Booting a Specific Software Image 5-13 Controlling Environment Variables 5-14 Scheduling a ...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
... Checking and Saving the Running Configuration 5-11 Modifying the Startup Configuration 5-11 Default Boot Configuration 5-12 Automatically Downloading a Configuration File 5-12 Specifying the Filename to Read and Write the System Configuration 5-12 Booting Manually 5-13 Booting a Specific Software Image 5-13 Controlling Environment Variables 5-14 Scheduling a ...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
Software Configuration Guide
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... 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...
... 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...
Software Configuration Guide
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...Source IP Address for NTP Packets 8-10 Displaying the NTP Configuration 8-11 Configuring Time and Date Manually 8-11 Setting the System Clock 8-12 Displaying the Time and Date Configuration 8-12 Configuring the Time Zone 8-13 Configuring Summer Time (Daylight Saving Time) 8-14 Configuring a System Name and Prompt 8-16 Default System ... 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
...Source IP Address for NTP Packets 8-10 Displaying the NTP Configuration 8-11 Configuring Time and Date Manually 8-11 Setting the System Clock 8-12 Displaying the Time and Date Configuration 8-12 Configuring the Time Zone 8-13 Configuring Summer Time (Daylight Saving Time) 8-14 Configuring a System Name and Prompt 8-16 Default System ... 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 Default Privilege Level for Lines 9-9 Logging into and Exiting a Privilege Level 9-10 Controlling Switch Access with TACACS+ 9-10 Understanding TACACS+ 9-10 TACACS+ Operation 9-12 Configuring TACACS+ 9-12 Default TACACS+ Configuration 9-13 Identifying the TACACS+ Server Host and Setting the Authentication Key 9-13... 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 Default Privilege Level for Lines 9-9 Logging into and Exiting a Privilege Level 9-10 Controlling Switch Access with TACACS+ 9-10 Understanding TACACS+ 9-10 TACACS+ Operation 9-12 Configuring TACACS+ 9-12 Default TACACS+ Configuration 9-13 Identifying the TACACS+ Server Host and Setting the Authentication Key 9-13... 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
Software Configuration Guide
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... Guidelines 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... 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
... Guidelines 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... 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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... Configuring Smartports Macros 12-1 Understanding Smartports Macros 12-1 Configuring Smartports Macros 12-2 Default Smartports Macro Configuration 12-2 Smartports Macro Configuration Guidelines 12-3 Creating Smartports Macros 12-4 Applying Smartports Macros 12-5 Applying Cisco-default Smartports Macros 12-6 Displaying Smartports Macros 12-8 Configuring LRE 13-1 Understanding LRE Features 13-1 Ports on the Catalyst 2950 LRE Switches 13-1 LRE Links... LRE Interleave 13-20 Configuring Upstream Power Back-Off 13-21 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xii 78-11380-10
... Configuring Smartports Macros 12-1 Understanding Smartports Macros 12-1 Configuring Smartports Macros 12-2 Default Smartports Macro Configuration 12-2 Smartports Macro Configuration Guidelines 12-3 Creating Smartports Macros 12-4 Applying Smartports Macros 12-5 Applying Cisco-default Smartports Macros 12-6 Displaying Smartports Macros 12-8 Configuring LRE 13-1 Understanding LRE Features 13-1 Ports on the Catalyst 2950 LRE Switches 13-1 LRE Links... LRE Interleave 13-20 Configuring Upstream Power Back-Off 13-21 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xii 78-11380-10
Software Configuration Guide
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... 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 ID 14-4 Spanning-Tree Interface States 14-4 Blocking State 14-6 Listening State 14-6 Learning State 14-6 Forwarding... 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...
... 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 ID 14-4 Spanning-Tree Interface States 14-4 Blocking State 14-6 Listening State 14-6 Learning State 14-6 Forwarding... 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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... 15-10 Configuring MSTP Features 15-11 Default MSTP Configuration 15-12 MSTP Configuration Guidelines 15-12 Specifying the MST Region Configuration and Enabling MSTP 15-13 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 78-11380-...
... 15-10 Configuring MSTP Features 15-11 Default MSTP Configuration 15-12 MSTP Configuration Guidelines 15-12 Specifying the MST Region Configuration and Enabling MSTP 15-13 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 78-11380-...
Software Configuration Guide
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...Connecting the Stack Ports 16-8 Understanding BackboneFast 16-9 Understanding EtherChannel Guard 16-11 Understanding Root Guard 16-11 Understanding Loop Guard 16-12 Configuring Optional Spanning-Tree Features 16-12 Default Optional Spanning-Tree Configuration 16-13 Optional Spanning-Tree Configuration Guidelines Enabling Port Fast 16-13 Enabling BPDU Guard 16-14... 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
...Connecting the Stack Ports 16-8 Understanding BackboneFast 16-9 Understanding EtherChannel Guard 16-11 Understanding Root Guard 16-11 Understanding Loop Guard 16-12 Configuring Optional Spanning-Tree Features 16-12 Default Optional Spanning-Tree Configuration 16-13 Optional Spanning-Tree Configuration Guidelines Enabling Port Fast 16-13 Enabling BPDU Guard 16-14... 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
Software Configuration Guide
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... Ethernet VLAN 17-8 Deleting a VLAN 17-10 Assigning Static-Access Ports to a VLAN 17-11 Configuring Extended-Range VLANs 17-12 Default VLAN Configuration 17-12 Extended-Range VLAN Configuration Guidelines 17-12 Creating an Extended-Range VLAN 17-13 Displaying VLANs 17-14 Configuring VLAN Trunks 17-15 Trunking Overview 17-15... 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 78-11380-10
... Ethernet VLAN 17-8 Deleting a VLAN 17-10 Assigning Static-Access Ports to a VLAN 17-11 Configuring Extended-Range VLANs 17-12 Default VLAN Configuration 17-12 Extended-Range VLAN Configuration Guidelines 17-12 Creating an Extended-Range VLAN 17-13 Displaying VLANs 17-14 Configuring VLAN Trunks 17-15 Trunking Overview 17-15... 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 78-11380-10
Software Configuration Guide
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...-9 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 xvii
...-9 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 xvii
Software Configuration Guide
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...-Leave Processing Disabling IGMP Report Suppression 21-11 21-10 21-10 Disabling IP Multicast-Source-Only Learning 21-11 Configuring the Aging Time 21-12 Displaying IGMP Snooping Information 21-13 Understanding Multicast VLAN Registration 21-14 Using MVR in a Multicast Television Application 21-15 Configuring MVR 21-17 Default... 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 xix
...-Leave Processing Disabling IGMP Report Suppression 21-11 21-10 21-10 Disabling IP Multicast-Source-Only Learning 21-11 Configuring the Aging Time 21-12 Displaying IGMP Snooping Information 21-13 Understanding Multicast VLAN Registration 21-14 Using MVR in a Multicast Television Application 21-15 Configuring MVR 21-17 Default... 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 xix
Software Configuration Guide
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...22-8 Default Port Security Configuration 22-9 Port Security Configuration Guidelines 22-9 Enabling and Configuring Port Security 22-10 Enabling and Configuring Port Security Aging 22-12 Displaying Port-Based Traffic Control Settings 22-13 Configuring UDLD 23-1 Understanding UDLD 23-1 Modes of Operation 23-1 Methods to Detect Unidirectional Links 23-2 ... 24-2 Configuring the CDP Characteristics 24-2 Disabling and Enabling CDP 24-3 Disabling and Enabling CDP on an Interface 24-4 Monitoring and Maintaining CDP 24-5 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xx 78-11380-10
...22-8 Default Port Security Configuration 22-9 Port Security Configuration Guidelines 22-9 Enabling and Configuring Port Security 22-10 Enabling and Configuring Port Security Aging 22-12 Displaying Port-Based Traffic Control Settings 22-13 Configuring UDLD 23-1 Understanding UDLD 23-1 Modes of Operation 23-1 Methods to Detect Unidirectional Links 23-2 ... 24-2 Configuring the CDP Characteristics 24-2 Disabling and Enabling CDP 24-3 Disabling and Enabling CDP on an Interface 24-4 Monitoring and Maintaining CDP 24-5 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xx 78-11380-10
Software Configuration Guide
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... Specifying Ports to Monitor 25-8 Creating a SPAN Session and Enabling Ingress Traffic 25-9 Removing Ports from a SPAN Session 25-11 Configuring RSPAN 25-12 RSPAN Configuration Guidelines 25-12 Configuring a VLAN as an RSPAN VLAN 25-13 Creating an RSPAN Source Session 25-13 Creating an RSPAN Destination Session 25-15 Removing...-2 Default RMON Configuration 26-3 Configuring RMON Alarms and Events 26-3 Configuring RMON Collection on an Interface 26-5 Displaying RMON Status 26-6 Contents 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xxi
... Specifying Ports to Monitor 25-8 Creating a SPAN Session and Enabling Ingress Traffic 25-9 Removing Ports from a SPAN Session 25-11 Configuring RSPAN 25-12 RSPAN Configuration Guidelines 25-12 Configuring a VLAN as an RSPAN VLAN 25-13 Creating an RSPAN Source Session 25-13 Creating an RSPAN Destination Session 25-15 Removing...-2 Default RMON Configuration 26-3 Configuring RMON Alarms and Events 26-3 Configuring RMON Collection on an Interface 26-5 Displaying RMON Status 26-6 Contents 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xxi
Software Configuration Guide
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... Forgotten Passwords on Catalyst 2950 LRE Switches 32-4 Password Recovery with Password Recovery Enabled 32-5 Procedure with Password Recovery Disabled 32-6 Recovering from Lost or Forgotten Passwords on Catalyst 2955 Switches 32-8 Recovering from a Command Switch Failure 32-10 Replacing a Failed Command Switch with a Cluster Member 32-11 Replacing a Failed Command Switch with Another Switch 32-12 Recovering from Lost...
... Forgotten Passwords on Catalyst 2950 LRE Switches 32-4 Password Recovery with Password Recovery Enabled 32-5 Procedure with Password Recovery Disabled 32-6 Recovering from Lost or Forgotten Passwords on Catalyst 2955 Switches 32-8 Recovering from a Command Switch Failure 32-10 Replacing a Failed Command Switch with a Cluster Member 32-11 Replacing a Failed Command Switch with Another Switch 32-12 Recovering from Lost...
Software Configuration Guide
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...-22 Using the crashinfo File 32-23 A A P P E N D I X Supported MIBs A-1 MIB List A-1 Using FTP to Access the MIB Files A-3 B A P P E N D I X Working with the Cisco IOS File System, Configuration Files, and Software Images B-1 Working with the Flash File System B-1 Displaying Available File Systems B-2 Setting the Default File System B-3 Displaying Information... a Configuration File By Using TFTP B-11 Downloading the Configuration File By Using TFTP B-11 Uploading the Configuration File By Using TFTP B-12 xxvi Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10
...-22 Using the crashinfo File 32-23 A A P P E N D I X Supported MIBs A-1 MIB List A-1 Using FTP to Access the MIB Files A-3 B A P P E N D I X Working with the Cisco IOS File System, Configuration Files, and Software Images B-1 Working with the Flash File System B-1 Displaying Available File Systems B-2 Setting the Default File System B-3 Displaying Information... a Configuration File By Using TFTP B-11 Downloading the Configuration File By Using TFTP B-11 Uploading the Configuration File By Using TFTP B-12 xxvi Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10
Software Configuration Guide
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INDEX Contents Copying Configuration Files By Using FTP B-12 Preparing to Download or Upload a Configuration File By Using FTP B-13 Downloading a Configuration File By Using FTP B-...File B-19 Deleting a Stored Configuration File B-19 Working with Software Images B-19 Image Location on the Switch B-20 tar File Format of Images on a Server or Cisco.com B-20 Copying Image Files By Using TFTP B-21 Preparing to Download or Upload an Image File...Image File By Using RCP B-29 Uploading an Image File By Using RCP B-31 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xxvii
INDEX Contents Copying Configuration Files By Using FTP B-12 Preparing to Download or Upload a Configuration File By Using FTP B-13 Downloading a Configuration File By Using FTP B-...File B-19 Deleting a Stored Configuration File B-19 Working with Software Images B-19 Image Location on the Switch B-20 tar File Format of Images on a Server or Cisco.com B-20 Copying Image Files By Using TFTP B-21 Preparing to Download or Upload an Image File...Image File By Using RCP B-29 Uploading an Image File By Using RCP B-31 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xxvii
Software Configuration Guide
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...release and to install your switch. Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xxx 78-11380-10 Notes, cautions, and timesavers use with the switch. Caution Means reader be careful. On the Cisco Product Documentation home page, select Release 12.1 from the Cisco.com home page at ...; Arguments for this manual. For this information, refer to the Cisco IOS documentation set available from the Cisco IOS Software drop-down list. For detailed information about the standard Cisco IOS Release 12.1 commands, refer to the system message guide for which you enter...
...release and to install your switch. Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xxx 78-11380-10 Notes, cautions, and timesavers use with the switch. Caution Means reader be careful. On the Cisco Product Documentation home page, select Release 12.1 from the Cisco.com home page at ...; Arguments for this manual. For this information, refer to the Cisco IOS documentation set available from the Cisco IOS Software drop-down list. For detailed information about the standard Cisco IOS Release 12.1 commands, refer to the system message guide for which you enter...
Software Configuration Guide
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... Switches Supported Switch Catalyst 2950-12 Catalyst 2950-24 Catalyst 2950C-24 Catalyst 2950G-12-EI Catalyst 2950G-24-EI Catalyst 2950G-24-EI-DC Catalyst 2950G-48-EI Catalyst 2950ST-8 LRE Catalyst 2950ST-24 LRE Catalyst 2950ST-24 LRE 997 Catalyst 2950SX-24 Catalyst 2950SX-48-SI Catalyst 2950T-24 Catalyst 2950T...EI EI EI EI EI SI SI EI SI 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-1 Overview CH A P T E R 1 This chapter provides these topics about the Catalyst 2950 and Catalyst 2955 switch software: • Features, page 1-1 • Management Options,...
... Switches Supported Switch Catalyst 2950-12 Catalyst 2950-24 Catalyst 2950C-24 Catalyst 2950G-12-EI Catalyst 2950G-24-EI Catalyst 2950G-24-EI-DC Catalyst 2950G-48-EI Catalyst 2950ST-8 LRE Catalyst 2950ST-24 LRE Catalyst 2950ST-24 LRE 997 Catalyst 2950SX-24 Catalyst 2950SX-48-SI Catalyst 2950T-24 Catalyst 2950T...EI EI EI EI EI SI SI EI SI 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-1 Overview CH A P T E R 1 This chapter provides these topics about the Catalyst 2950 and Catalyst 2955 switch software: • Features, page 1-1 • Management Options,...