Configuration Guide
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... View 2-14 Topology Display Options 2-14 Menus and Toolbar 2-15 Menu Bar 2-15 Toolbar 2-20 Front Panel View Popup Menus 2-21 Device Popup Menu 2-21 Port Popup Menu 2-21 Topology View Popup Menus 2-22 Link Popup Menu 2-22 Device Popup Menus 2-23 Interaction Modes 2-25 Guide Mode 2-25 Expert Mode 2-25... Verifying Your Changes 2-32 Change Notification 2-32 Error Checking 2-32 Saving Your Changes 2-32 Using Different Versions of CMS 2-33 Where to Go Next 2-33 Catalyst 2950 Desktop Switch Software Configuration Guide iv 78-11380-03
... View 2-14 Topology Display Options 2-14 Menus and Toolbar 2-15 Menu Bar 2-15 Toolbar 2-20 Front Panel View Popup Menus 2-21 Device Popup Menu 2-21 Port Popup Menu 2-21 Topology View Popup Menus 2-22 Link Popup Menu 2-22 Device Popup Menus 2-23 Interaction Modes 2-25 Guide Mode 2-25 Expert Mode 2-25... Verifying Your Changes 2-32 Change Notification 2-32 Error Checking 2-32 Saving Your Changes 2-32 Using Different Versions of CMS 2-33 Where to Go Next 2-33 Catalyst 2950 Desktop Switch Software Configuration Guide iv 78-11380-03
Configuration Guide
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... the Switch 4-1 Switch Software Releases 4-2 Console Port Access 4-2 Telnet Access to the CLI 4-2 HTTP Access to CMS 4-3 SNMP Network Management Platforms 4-4 SNMP Versions 4-4 Using FTP to Access the MIB Files 4-5 Using SNMP to Access MIB Variables 4-5 Default Settings 4-6 Clustering Switches 5-1 Understanding Switch Clusters 5-2 Command Switch Characteristics 5-2 Standby Command Switch Characteristics 5-3 Candidate and Member Switches Characteristics 5-3 Catalyst 2950 Desktop Switch Software...
... the Switch 4-1 Switch Software Releases 4-2 Console Port Access 4-2 Telnet Access to the CLI 4-2 HTTP Access to CMS 4-3 SNMP Network Management Platforms 4-4 SNMP Versions 4-4 Using FTP to Access the MIB Files 4-5 Using SNMP to Access MIB Variables 4-5 Default Settings 4-6 Clustering Switches 5-1 Understanding Switch Clusters 5-2 Command Switch Characteristics 5-2 Standby Command Switch Characteristics 5-3 Candidate and Member Switches Characteristics 5-3 Catalyst 2950 Desktop Switch Software...
Configuration Guide
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... the Network Time Protocol 6-11 Configuring the Switch as an NTP Client 6-11 Enabling NTP Authentication 6-11 Configuring the Switch for NTP Broadcast-Client Mode 6-12 Configuring SNMP...Addresses 6-18 Adding and Removing Static Address Entries 6-18 Configuring Static Addresses for EtherChannel Port Groups 6-19 Configuring TACACS+ 6-20 Configuring the TACACS+ Server Host 6-20 Configuring... Access and Network Services 6-22 Starting TACACS+ Accounting 6-22 Configuring a Switch for Local AAA 6-23 Controlling Switch Access with RADIUS 6-24 Understanding RADIUS 6-24 RADIUS Operation 6-25 Configuring ...
... the Network Time Protocol 6-11 Configuring the Switch as an NTP Client 6-11 Enabling NTP Authentication 6-11 Configuring the Switch for NTP Broadcast-Client Mode 6-12 Configuring SNMP...Addresses 6-18 Adding and Removing Static Address Entries 6-18 Configuring Static Addresses for EtherChannel Port Groups 6-19 Configuring TACACS+ 6-20 Configuring the TACACS+ Server Host 6-20 Configuring... Access and Network Services 6-22 Starting TACACS+ Accounting 6-22 Configuring a Switch for Local AAA 6-23 Controlling Switch Access with RADIUS 6-24 Understanding RADIUS 6-24 RADIUS Operation 6-25 Configuring ...
Configuration Guide
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... 7-10 Manually Re-Authenticating a Client Connected to a Port 7-11 Changing the Quiet Period 7-11 Changing the Switch-to-Client Retransmission Time 7-12 Setting the Switch-to-Client Frame-Retransmission Number 7-13 Enabling Multiple Hosts ...the Management VLAN for a New Switch 8-3 Changing the Management VLAN Through a Telnet Connection 8-4 Assigning VLAN Port Membership Modes 8-4 VLAN Membership Combinations 8-6 Assigning Static-Access Ports to a VLAN 8-7 Using VTP 8-7 The VTP Domain 8-7 VTP Modes and Mode Transitions 8-7 Catalyst 2950 Desktop Switch Software Configuration Guide viii 78-11380...
... 7-10 Manually Re-Authenticating a Client Connected to a Port 7-11 Changing the Quiet Period 7-11 Changing the Switch-to-Client Retransmission Time 7-12 Setting the Switch-to-Client Frame-Retransmission Number 7-13 Enabling Multiple Hosts ...the Management VLAN for a New Switch 8-3 Changing the Management VLAN Through a Telnet Connection 8-4 Assigning VLAN Port Membership Modes 8-4 VLAN Membership Combinations 8-6 Assigning Static-Access Ports to a VLAN 8-7 Using VTP 8-7 The VTP Domain 8-7 VTP Modes and Mode Transitions 8-7 Catalyst 2950 Desktop Switch Software Configuration Guide viii 78-11380...
Configuration Guide
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...8-19 How VLAN Trunks Work 8-20 IEEE 802.1Q Configuration Considerations 8-21 Trunks Interacting with Other Features 8-21 Configuring a Trunk Port 8-22 CLI: Disabling a Trunk Port 8-22 CLI: Defining the Allowed VLANs on a Trunk 8-23 Changing the Pruning-Eligible List 8-23 Configuring the Native VLAN for ...Untagged Traffic 8-24 Load Sharing Using STP 8-24 Load Sharing Using STP Port Priorities 8-25 Configuring STP Port Priorities and Load Sharing 8-25 Load Sharing Using STP Path Cost 8-27 How the VMPS Works 8-28 Catalyst 2950 Desktop Switch Software Configuration Guide ix
...8-19 How VLAN Trunks Work 8-20 IEEE 802.1Q Configuration Considerations 8-21 Trunks Interacting with Other Features 8-21 Configuring a Trunk Port 8-22 CLI: Disabling a Trunk Port 8-22 CLI: Defining the Allowed VLANs on a Trunk 8-23 Changing the Pruning-Eligible List 8-23 Configuring the Native VLAN for ...Untagged Traffic 8-24 Load Sharing Using STP 8-24 Load Sharing Using STP Port Priorities 8-25 Configuring STP Port Priorities and Load Sharing 8-25 Load Sharing Using STP Path Cost 8-27 How the VMPS Works 8-28 Catalyst 2950 Desktop Switch Software Configuration Guide ix
Configuration Guide
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... IEEE 802.1Q Trunks 9-8 STP and Redundant Connectivity 9-8 Accelerated Aging to Retain Connectivity 9-9 Understanding Advanced STP Features 9-9 Understanding Port Fast 9-10 Understanding BPDU Guard 9-10 Understanding UplinkFast 9-11 Understanding Cross-Stack UplinkFast 9-12 How CSUF Works 9-13 Events that Cause Fast Convergence 9-14 Catalyst 2950 Desktop Switch Software Configuration Guide x 78-11380-03
... IEEE 802.1Q Trunks 9-8 STP and Redundant Connectivity 9-8 Accelerated Aging to Retain Connectivity 9-9 Understanding Advanced STP Features 9-9 Understanding Port Fast 9-10 Understanding BPDU Guard 9-10 Understanding UplinkFast 9-11 Understanding Cross-Stack UplinkFast 9-12 How CSUF Works 9-13 Events that Cause Fast Convergence 9-14 Catalyst 2950 Desktop Switch Software Configuration Guide x 78-11380-03
Configuration Guide
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... Redundant Links 9-32 Configuring Cross-Stack UplinkFast 9-33 Configuring BackboneFast 9-34 Configuring Root Guard 9-34 Configuring the Switch Ports 10-1 Changing the Port Speed and Duplex Mode 10-1 Connecting to Devices That Do Not Autonegotiate 10-2 Setting Speed and Duplex Parameters... Controls 10-4 Enabling Storm Control 10-4 Disabling Storm Control 10-5 Configuring Protected Ports 10-5 Enabling Port Security 10-6 Defining the Maximum Secure Address Count 10-7 Enabling Port Security 10-7 Disabling Port Security 10-8 78-11380-03 Catalyst 2950 Desktop Switch Software Configuration Guide xi
... Redundant Links 9-32 Configuring Cross-Stack UplinkFast 9-33 Configuring BackboneFast 9-34 Configuring Root Guard 9-34 Configuring the Switch Ports 10-1 Changing the Port Speed and Duplex Mode 10-1 Connecting to Devices That Do Not Autonegotiate 10-2 Setting Speed and Duplex Parameters... Controls 10-4 Enabling Storm Control 10-4 Disabling Storm Control 10-5 Configuring Protected Ports 10-5 Enabling Port Security 10-6 Defining the Maximum Secure Address Count 10-7 Enabling Port Security 10-7 Disabling Port Security 10-8 78-11380-03 Catalyst 2950 Desktop Switch Software Configuration Guide xi
Configuration Guide
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... UniDirectional Link Detection 10-18 Understanding SPAN 10-18 SPAN Concepts and Terminology 10-19 SPAN Session 10-19 Traffic Types 10-19 Source Port 10-20 Destination Port 10-20 SPAN Traffic 10-21 SPAN Interaction with Other Features 10-21 Configuring SPAN 10-22 SPAN Configuration Guidelines 10-22 Creating... 11-3 Setting the Snooping Method 11-4 Joining a Multicast Group 11-4 Statically Configuring a Host to Join a Group 11-5 CLI: Statically Configuring a Interface to Join a Group 11-6 Catalyst 2950 Desktop Switch Software Configuration Guide xii 78-11380-03
... UniDirectional Link Detection 10-18 Understanding SPAN 10-18 SPAN Concepts and Terminology 10-19 SPAN Session 10-19 Traffic Types 10-19 Source Port 10-20 Destination Port 10-20 SPAN Traffic 10-21 SPAN Interaction with Other Features 10-21 Configuring SPAN 10-22 SPAN Configuration Guidelines 10-22 Creating... 11-3 Setting the Snooping Method 11-4 Joining a Multicast Group 11-4 Statically Configuring a Host to Join a Group 11-5 CLI: Statically Configuring a Interface to Join a Group 11-6 Catalyst 2950 Desktop Switch Software Configuration Guide xii 78-11380-03
Configuration Guide
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...E R 13 C H A P T E R 78-11380-03 Leaving a Multicast Group 11-6 CLI: Configuring a Multicast Router Port 11-7 Understanding Multicast VLAN Registration 11-7 Using MVR in a Multicast Television Application 11-8 Configuration Guidelines and Limitations 11-10 Default MVR ...ACLs 12-1 ACLs 12-2 Handling Fragmented and Unfragmented Traffic 12-3 Understanding Access Control Parameters 12-4 Guidelines for Configuring ACLs on the Catalyst 2950 Switches 12-5 Configuring ACLs 12-6 Unsupported Features 12-6 Creating Standard and Extended IP ACLs 12-7 ACL Numbers 12-7 Creating a Numbered Standard...
...E R 13 C H A P T E R 78-11380-03 Leaving a Multicast Group 11-6 CLI: Configuring a Multicast Router Port 11-7 Understanding Multicast VLAN Registration 11-7 Using MVR in a Multicast Television Application 11-8 Configuration Guidelines and Limitations 11-10 Default MVR ...ACLs 12-1 ACLs 12-2 Handling Fragmented and Unfragmented Traffic 12-3 Understanding Access Control Parameters 12-4 Guidelines for Configuring ACLs on the Catalyst 2950 Switches 12-5 Configuring ACLs 12-6 Unsupported Features 12-6 Creating Standard and Extended IP ACLs 12-7 ACL Numbers 12-7 Creating a Numbered Standard...
Configuration Guide
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... Configuring QoS 13-9 Default QoS Configuration 13-9 Configuration Guidelines 13-10 Configuring Classification Using Port Trust States 13-10 Configuring the Trust State on Ports within the QoS Domain 13-11 Configuring the CoS Value for an Interface 13-13 ... Recovering from a Command Switch Failure 14-5 Replacing a Failed Command Switch with a Cluster Member 14-6 Replacing a Failed Command Switch with Another Switch 14-7 Recovering from a Failed Command Switch Without HSRP 14-8 Recovering from a Lost or Forgotten Password 14-9 Catalyst 2950 Desktop Switch Software Configuration Guide xiv ...
... Configuring QoS 13-9 Default QoS Configuration 13-9 Configuration Guidelines 13-10 Configuring Classification Using Port Trust States 13-10 Configuring the Trust State on Ports within the QoS Domain 13-11 Configuring the CoS Value for an Interface 13-13 ... Recovering from a Command Switch Failure 14-5 Replacing a Failed Command Switch with a Cluster Member 14-6 Replacing a Failed Command Switch with Another Switch 14-7 Recovering from a Failed Command Switch Without HSRP 14-8 Recovering from a Lost or Forgotten Password 14-9 Catalyst 2950 Desktop Switch Software Configuration Guide xiv ...
Configuration Guide
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... default settings and information about the standard IOS Release 12.1 commands, refer to the release notes. therefore, CLI procedures are described in the standard Cisco IOS Release 12.1 documentation. Chapter 5, "Clustering Switches," describes switch clusters and the considerations for configuring 802.1X port-based authentication. xviii Catalyst 2950 Desktop Switch Software Configuration Guide 78-11380-03
... default settings and information about the standard IOS Release 12.1 commands, refer to the release notes. therefore, CLI procedures are described in the standard Cisco IOS Release 12.1 documentation. Chapter 5, "Clustering Switches," describes switch clusters and the considerations for configuring 802.1X port-based authentication. xviii Catalyst 2950 Desktop Switch Software Configuration Guide 78-11380-03
Configuration Guide
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.... The online help provides the CMS procedures. With this feature, you supply values are in this manual. 78-11380-03 Catalyst 2950 Desktop Switch Software Configuration Guide xix Chapter 12, "Configuring Network Security with ACLs," provides the considerations and CLI procedures for configuring Internet Group...advanced spanning-tree features. Preface Conventions Chapter 9, "Configuring STP," provides the considerations and CLI procedures for configuring the switch ports. Chapter 10, "Configuring the Switch Ports," provides the considerations and CLI procedures for configuring the...
.... The online help provides the CMS procedures. With this feature, you supply values are in this manual. 78-11380-03 Catalyst 2950 Desktop Switch Software Configuration Guide xix Chapter 12, "Configuring Network Security with ACLs," provides the considerations and CLI procedures for configuring Internet Group...advanced spanning-tree features. Preface Conventions Chapter 9, "Configuring STP," provides the considerations and CLI procedures for configuring the switch ports. Chapter 10, "Configuring the Switch Ports," provides the considerations and CLI procedures for configuring the...
Configuration Guide
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... must have compatible software releases. Note See the "Advantages of Using CMS and Clustering Switches" section on the same switch • Dynamic address learning for enhanced security Catalyst 2950 Desktop Switch Software Configuration Guide 1-2 78-11380-03 Refer to the release notes for a list ...notes for the CMS, cluster hardware, software, and browser requirements. The Catalyst 2950 switches running Cisco IOS Release12.1(6)EA2 or later support frame sizes 1500 to 1530 bytes • Per-port broadcast storm control for preventing faulty end stations from degrading overall system ...
... must have compatible software releases. Note See the "Advantages of Using CMS and Clustering Switches" section on the same switch • Dynamic address learning for enhanced security Catalyst 2950 Desktop Switch Software Configuration Guide 1-2 78-11380-03 Refer to the release notes for a list ...notes for the CMS, cluster hardware, software, and browser requirements. The Catalyst 2950 switches running Cisco IOS Release12.1(6)EA2 or later support frame sizes 1500 to 1530 bytes • Per-port broadcast storm control for preventing faulty end stations from degrading overall system ...
Configuration Guide
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...access through the switch console port to a directly-attached terminal or to ensure retrieval of the management interfaces, see the "Management Options" section on the network • Network Time Protocol (NTP) for providing a consistent timestamp to all switches from an ... terminal through up to 16 simultaneous Telnet connections for network topology discovery and mapping between the switch and other Cisco devices on page 1-6. 78-11380-03 Catalyst 2950 Desktop Switch Software Configuration Guide 1-3 Chapter 1 Overview Features Table 1-1 Features (continued) Manageability • ...
...access through the switch console port to a directly-attached terminal or to ensure retrieval of the management interfaces, see the "Management Options" section on the network • Network Time Protocol (NTP) for providing a consistent timestamp to all switches from an ... terminal through up to 16 simultaneous Telnet connections for network topology discovery and mapping between the switch and other Cisco devices on page 1-6. 78-11380-03 Catalyst 2950 Desktop Switch Software Configuration Guide 1-3 Chapter 1 Overview Features Table 1-1 Features (continued) Manageability • ...
Configuration Guide
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... (DTP) for negotiating trunking on all Ethernet ports for detecting and disabling unidirectional links on page 8-2). Port Fast mode for balancing load across virtual LANs (VLANs) - VLAN Support • Catalyst 2950 switches support 250 port-based VLANs for achieving load balancing between two ...restricting flooded traffic to VLANs associated with appropriate network resources, traffic patterns, and bandwidth. Note The Catalyst 2950-12 and Catalyst 2950-24 switches support only 64 port-based VLANs. • IEEE 802.1Q trunking protocol on a link between redundant uplinks, including ...
... (DTP) for negotiating trunking on all Ethernet ports for detecting and disabling unidirectional links on page 8-2). Port Fast mode for balancing load across virtual LANs (VLANs) - VLAN Support • Catalyst 2950 switches support 250 port-based VLANs for achieving load balancing between two ...restricting flooded traffic to VLANs associated with appropriate network resources, traffic patterns, and bandwidth. Note The Catalyst 2950-12 and Catalyst 2950-24 switches support only 64 port-based VLANs. • IEEE 802.1Q trunking protocol on a link between redundant uplinks, including ...
Configuration Guide
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...Gigabit-capable Ethernet ports1 Up to six policers on ingress 10/100 ports1 Granularity of 1 Mbps on 10/100 ports and 8 Mbps on all switch ports. Support for packets that exceed bandwidth utilization limits1 Egress Policing and Scheduling of Egress Queues • Four egress queues... on 10/100/1000 ports1 • Out-of-profile markdown for strict priority and weighted round-robin (WRR) CoS policies 78-11380-03 Catalyst 2950 Desktop Switch ...
...Gigabit-capable Ethernet ports1 Up to six policers on ingress 10/100 ports1 Granularity of 1 Mbps on 10/100 ports and 8 Mbps on all switch ports. Support for packets that exceed bandwidth utilization limits1 Egress Policing and Scheduling of Egress Queues • Four egress queues... on 10/100/1000 ports1 • Out-of-profile markdown for strict priority and weighted round-robin (WRR) CoS policies 78-11380-03 Catalyst 2950 Desktop Switch ...
Configuration Guide
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... applications such as Netscape Communicator or Microsoft Internet Explorer. You can configure and monitor the switch-on a switch running the enhanced software image. Management Options The Catalyst 2950 switches are designed for plug-and-play operation: you can also display network topologies to gather ...link information and to display switch images to the switch console port or by using Telnet from the CLI. CMS ...
... applications such as Netscape Communicator or Microsoft Internet Explorer. You can configure and monitor the switch-on a switch running the enhanced software image. Management Options The Catalyst 2950 switches are designed for plug-and-play operation: you can also display network topologies to gather ...link information and to display switch images to the switch console port or by using Telnet from the CLI. CMS ...
Configuration Guide
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...port LED colors on the physical LEDs. • Use an interactive mode that takes you step-by-step through one IP address as if they were a single entity. Chapter 1 Overview Management Options You can use Cisco switch clustering technology to manage up to 16 interconnected and supported Catalyst switches...; Manage and monitor interconnected Catalyst switches (refer to the release notes for each individual port or switch. You can simplify and minimize your network. Port configuration such as HP OpenView or SunNet Manager. For more information about switch clusters, see the "SNMP...
...port LED colors on the physical LEDs. • Use an interactive mode that takes you step-by-step through one IP address as if they were a single entity. Chapter 1 Overview Management Options You can use Cisco switch clustering technology to manage up to 16 interconnected and supported Catalyst switches...; Manage and monitor interconnected Catalyst switches (refer to the release notes for each individual port or switch. You can simplify and minimize your network. Port configuration such as HP OpenView or SunNet Manager. For more information about switch clusters, see the "SNMP...
Configuration Guide
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... some network demands and how you can meet those resources most. • Use full-duplex operation between the switch and its connected servers and routers. Catalyst 2950 Desktop Switch Software Configuration Guide 1-8 78-11380-03 When you configure your network, consider the bandwidth required by your network ... global resources-such as servers and routers to which network users require equal access-directly to the Fast Ethernet or Gigabit Ethernet switch ports so that fewer users share the bandwidth, and use VLANs and IP subnets to degrade and how you can configure your network...
... some network demands and how you can meet those resources most. • Use full-duplex operation between the switch and its connected servers and routers. Catalyst 2950 Desktop Switch Software Configuration Guide 1-8 78-11380-03 When you configure your network, consider the bandwidth required by your network ... global resources-such as servers and routers to which network users require equal access-directly to the Fast Ethernet or Gigabit Ethernet switch ports so that fewer users share the bandwidth, and use VLANs and IP subnets to degrade and how you can configure your network...
Configuration Guide
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...modules on two of up to 15 Mb of Catalyst 2950-48 switches, you can have redundant uplink connections to network resources in a star configuration.... queues per port to create a GigaStack loopback, and enable cross-stack UplinkFast on 802.1P/Q. You can configure the stack members and the Catalyst 3550-12G switch as a ...switches, you can create backup paths between the switches and network resources. 78-11380-03 Catalyst 2950 Desktop Switch Software Configuration Guide 1-9 When you can connect up to a backbone switch in the backbone. Using the required Cisco...
...modules on two of up to 15 Mb of Catalyst 2950-48 switches, you can have redundant uplink connections to network resources in a star configuration.... queues per port to create a GigaStack loopback, and enable cross-stack UplinkFast on 802.1P/Q. You can configure the stack members and the Catalyst 3550-12G switch as a ...switches, you can create backup paths between the switches and network resources. 78-11380-03 Catalyst 2950 Desktop Switch Software Configuration Guide 1-9 When you can connect up to a backbone switch in the backbone. Using the required Cisco...