Configuration Guide
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Catalyst 3750 Switch Software Configuration Guide Cisco IOS Release 12.2(35)SE December 2006 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 Text Part Number: OL-8550-02
Catalyst 3750 Switch Software Configuration Guide Cisco IOS Release 12.2(35)SE December 2006 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 Text Part Number: OL-8550-02
Configuration Guide
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... TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY. All rights reserved. and Access Registrar, Aironet, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, Follow Me...
... TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY. All rights reserved. and Access Registrar, Aironet, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, Follow Me...
Configuration Guide
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... and Write the System Configuration 3-12 Booting Manually 3-13 Booting a Specific Software Image 3-14 Controlling Environment Variables 3-15 Scheduling a Reload of the Software Image 3-16 Configuring a Scheduled Reload 3-17 Displaying Scheduled Reload Information 3-18 Configuring Cisco IOS CNS Agents 4-1 Understanding Cisco Configuration Engine Software 4-1 Configuration Service 4-2 Event Service 4-3 NameSpace Mapper 4-3 What You Should Know...
... and Write the System Configuration 3-12 Booting Manually 3-13 Booting a Specific Software Image 3-14 Controlling Environment Variables 3-15 Scheduling a Reload of the Software Image 3-16 Configuring a Scheduled Reload 3-17 Displaying Scheduled Reload Information 3-18 Configuring Cisco IOS CNS Agents 4-1 Understanding Cisco Configuration Engine Software 4-1 Configuration Service 4-2 Event Service 4-3 NameSpace Mapper 4-3 What You Should Know...
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... 4-6 Enabling Automated CNS Configuration 4-6 Enabling the CNS Event Agent 4-8 Enabling the Cisco IOS CNS Agent 4-9 Enabling an Initial Configuration 4-9 Enabling a Partial Configuration 4-11 Displaying CNS Configuration 4-12 Managing Switch Stacks 5-1 Understanding Switch Stacks 5-1 Switch Stack Membership 5-3 Stack Master ... Through an SSH Session 5-16 Connectivity to the Switch Stack Through Console Ports 5-16 Connectivity to Specific Stack Members 5-17 Switch Stack Configuration Scenarios 5-17 Catalyst 3750 Switch Software Configuration Guide vi OL-8550-02
... 4-6 Enabling Automated CNS Configuration 4-6 Enabling the CNS Event Agent 4-8 Enabling the Cisco IOS CNS Agent 4-9 Enabling an Initial Configuration 4-9 Enabling a Partial Configuration 4-11 Displaying CNS Configuration 4-12 Managing Switch Stacks 5-1 Understanding Switch Stacks 5-1 Switch Stack Membership 5-3 Stack Master ... Through an SSH Session 5-16 Connectivity to the Switch Stack Through Console Ports 5-16 Connectivity to Specific Stack Members 5-17 Switch Stack Configuration Scenarios 5-17 Catalyst 3750 Switch Software Configuration Guide vi OL-8550-02
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... Features and IP Source Guard 22-1 Understanding DHCP Features 22-1 DHCP Server 22-2 DHCP Relay Agent 22-2 DHCP Snooping 22-2 Option-82 Data Insertion 22-3 Cisco IOS DHCP Server Database 22-6 DHCP Snooping Binding Database 22-7 DHCP Snooping and Switch Stacks 22-8 Configuring DHCP Features 22-8 Default DHCP Configuration 22-8 DHCP Snooping... Stacks 22-10 Configuring the DHCP Relay Agent 22-11 Specifying the Packet Forwarding Address 22-11 Enabling DHCP Snooping and Option 82 22-12 Catalyst 3750 Switch Software Configuration Guide xx OL-8550-02
... Features and IP Source Guard 22-1 Understanding DHCP Features 22-1 DHCP Server 22-2 DHCP Relay Agent 22-2 DHCP Snooping 22-2 Option-82 Data Insertion 22-3 Cisco IOS DHCP Server Database 22-6 DHCP Snooping Binding Database 22-7 DHCP Snooping and Switch Stacks 22-8 Configuring DHCP Features 22-8 Default DHCP Configuration 22-8 DHCP Snooping... Stacks 22-10 Configuring the DHCP Relay Agent 22-11 Specifying the Packet Forwarding Address 22-11 Enabling DHCP Snooping and Option 82 22-12 Catalyst 3750 Switch Software Configuration Guide xx OL-8550-02
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Contents 23 C H A P T E R 24 C H A P T E R OL-8550-02 Enabling DHCP Snooping on Private VLANs 22-14 Enabling the Cisco IOS DHCP Server Database 22-14 Enabling the DHCP Snooping Binding Database Agent 22-15 Displaying DHCP Snooping Information 22-16 Understanding IP Source Guard 22-... a Multicast Group 24-3 Leaving a Multicast Group 24-5 Immediate Leave 24-6 IGMP Configurable-Leave Timer 24-6 IGMP Report Suppression 24-6 IGMP Snooping and Switch Stacks 24-7 Catalyst 3750 Switch Software Configuration Guide xxi
Contents 23 C H A P T E R 24 C H A P T E R OL-8550-02 Enabling DHCP Snooping on Private VLANs 22-14 Enabling the Cisco IOS DHCP Server Database 22-14 Enabling the DHCP Snooping Binding Database Agent 22-15 Displaying DHCP Snooping Information 22-16 Understanding IP Source Guard 22-... a Multicast Group 24-3 Leaving a Multicast Group 24-5 Immediate Leave 24-6 IGMP Configurable-Leave Timer 24-6 IGMP Report Suppression 24-6 IGMP Snooping and Switch Stacks 24-7 Catalyst 3750 Switch Software Configuration Guide xxi
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Contents C A P P E N D I X Working with the Cisco IOS File System, Configuration Files, and Software Images C-1 Working with the Flash File System C-1 Displaying Available File Systems C-2 Setting the Default File System C-3 Displaying Information about ... C-19 Deleting a Stored Configuration File C-19 Working with Software Images C-19 Image Location on the Switch C-20 tar File Format of Images on a Server or Cisco.com C-20 OL-8550-02 Catalyst 3750 Switch Software Configuration Guide xxxix
Contents C A P P E N D I X Working with the Cisco IOS File System, Configuration Files, and Software Images C-1 Working with the Flash File System C-1 Displaying Available File Systems C-2 Setting the Default File System C-3 Displaying Information about ... C-19 Deleting a Stored Configuration File C-19 Working with Software Images C-19 Image Location on the Switch C-20 tar File Format of Images on a Server or Cisco.com C-20 OL-8550-02 Catalyst 3750 Switch Software Configuration Guide xxxix
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...C-32 Copying an Image File from One Stack Member to Another C-33 D A P P E N D I X Unsupported Commands in Cisco IOS Release 12.2(35)SE D-1 Access Control Lists D-1 Unsupported Privileged EXEC Commands D-1 Unsupported Global Configuration Commands D-1 Unsupported Route-Map Configuration Commands D-1 Archive Commands D-2 Unsupported Privileged EXEC Commands... Commands D-4 Interface Commands D-5 Unsupported Privileged EXEC Commands D-5 Unsupported Global Configuration Commands D-5 Unsupported Interface Configuration Commands D-5 Catalyst 3750 Switch Software Configuration Guide xl OL-8550-02
...C-32 Copying an Image File from One Stack Member to Another C-33 D A P P E N D I X Unsupported Commands in Cisco IOS Release 12.2(35)SE D-1 Access Control Lists D-1 Unsupported Privileged EXEC Commands D-1 Unsupported Global Configuration Commands D-1 Unsupported Route-Map Configuration Commands D-1 Archive Commands D-2 Unsupported Privileged EXEC Commands... Commands D-4 Interface Commands D-5 Unsupported Privileged EXEC Commands D-5 Unsupported Global Configuration Commands D-5 Unsupported Interface Configuration Commands D-5 Catalyst 3750 Switch Software Configuration Guide xl OL-8550-02
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... this release. For documentation updates, see the switch online help. OL-8550-02 Catalyst 3750 Switch Software Configuration Guide xliii The IP base image provides Layer 2+ features including access control lists (ACLs), quality of service (QoS), static routing, EIGRP stub routing, and... full Layer 3 routing (IP unicast routing, IP multicast routing, and fallback bridging). For information about the standard Cisco IOS Release 12.2 commands, see the Catalyst 3750 Switch Command Reference for this release. This guide provides procedures for using this guide are applicable to manage the...
... this release. For documentation updates, see the switch online help. OL-8550-02 Catalyst 3750 Switch Software Configuration Guide xliii The IP base image provides Layer 2+ features including access control lists (ACLs), quality of service (QoS), static routing, EIGRP stub routing, and... full Layer 3 routing (IP unicast routing, IP multicast routing, and fallback bridging). For information about the standard Cisco IOS Release 12.2 commands, see the Catalyst 3750 Switch Command Reference for this release. This guide provides procedures for using this guide are applicable to manage the...
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... new switch that prompt you in advance the interface configuration for a specific stack member number and for data applications, and security. - Automatic Cisco IOS version-check of up to accomplish specific tasks. - Adding, removing, and replacing switches in the network. - Automatic discovery of candidate switches... of cluster candidates that can join a cluster and to the system bandwidth. - Chapter 1 Overview Features - OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 1-3 Using a single IP address and configuration file to the command switch.
... new switch that prompt you in advance the interface configuration for a specific stack member number and for data applications, and security. - Automatic Cisco IOS version-check of up to accomplish specific tasks. - Adding, removing, and replacing switches in the network. - Automatic discovery of candidate switches... of cluster candidates that can join a cluster and to the system bandwidth. - Chapter 1 Overview Features - OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 1-3 Using a single IP address and configuration file to the command switch.
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...Cisco IOS software supports desktop- and multilayer-switching features. You can be downloaded from a remote management station. You can manage from an SNMP-compatible management station that can access the CLI either by connecting your management station directly to drop packets with Cisco Network Assistant, available on the network OL-8550-02 Catalyst...switch information (such as CiscoWorks2000 LAN Management Suite (LMS) and HP OpenView. For more information about Network Assistant, see Chapter 31, "Configuring SNMP." • CNS-Cisco Networking Services is network management ...
...Cisco IOS software supports desktop- and multilayer-switching features. You can be downloaded from a remote management station. You can manage from an SNMP-compatible management station that can access the CLI either by connecting your management station directly to drop packets with Cisco Network Assistant, available on the network OL-8550-02 Catalyst...switch information (such as CiscoWorks2000 LAN Management Suite (LMS) and HP OpenView. For more information about Network Assistant, see Chapter 31, "Configuring SNMP." • CNS-Cisco Networking Services is network management ...
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... rapid convergence of the software IP base and IP services images) • On the Catalyst 3750G Integrated Wireless LAN Controller Switch only, an integrated Catalyst 3750 switch and Cisco 4400 series wireless LAN controller that supports up to 25 or 50 lightweight access points Availability and Redundancy Features These are... Overview • Network Time Protocol (NTP) for providing a consistent time stamp to all switches from an external source • Cisco IOS File System (IFS) for providing a single interface to all file systems that the switch uses • Configuration logging to log ...
... rapid convergence of the software IP base and IP services images) • On the Catalyst 3750G Integrated Wireless LAN Controller Switch only, an integrated Catalyst 3750 switch and Cisco 4400 series wireless LAN controller that supports up to 25 or 50 lightweight access points Availability and Redundancy Features These are... Overview • Network Time Protocol (NTP) for providing a consistent time stamp to all switches from an external source • Cisco IOS File System (IFS) for providing a single interface to all file systems that the switch uses • Configuration logging to log ...
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... class map can use more than the guarantee if other queues become empty and do not use their share of port bandwidth. In Cisco IOS Release 12.2(25)SED and later, if you configure multiple class maps for packets that exceed bandwidth utilization limits • Ingress queueing ...different policer. - Shaped egress queues are also guaranteed a configured share of bandwidth, but limited to using a share of the bandwidth. 1-10 Catalyst 3750 Switch Software Configuration Guide OL-8550-02 IP type-of the port bandwidth should be the priority queue) - Traffic-policing policies on the switch...
... class map can use more than the guarantee if other queues become empty and do not use their share of port bandwidth. In Cisco IOS Release 12.2(25)SED and later, if you configure multiple class maps for packets that exceed bandwidth utilization limits • Ingress queueing ...different policer. - Shaped egress queues are also guaranteed a configured share of bandwidth, but limited to using a share of the bandwidth. 1-10 Catalyst 3750 Switch Software Configuration Guide OL-8550-02 IP type-of the port bandwidth should be the priority queue) - Traffic-policing policies on the switch...
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... CLI-based setup program, see the hardware installation guide. If you do not configure the switch at all, the switch operates with Cisco Network Assistant, available on Cisco.com. • No passwords are both enabled. For more information, see Chapter 5, "Managing Switch Stacks." • Switch cluster is...• Default switch IP address, subnet mask, and default gateway is disabled. Auto-MDIX is disabled. Note In releases earlier than Cisco IOS Release 12.2(18)SE, the default setting for auto-MDIX is enabled. OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 1-13
... CLI-based setup program, see the hardware installation guide. If you do not configure the switch at all, the switch operates with Cisco Network Assistant, available on Cisco.com. • No passwords are both enabled. For more information, see Chapter 5, "Managing Switch Stacks." • Switch cluster is...• Default switch IP address, subnet mask, and default gateway is disabled. Auto-MDIX is disabled. Note In releases earlier than Cisco IOS Release 12.2(18)SE, the default setting for auto-MDIX is enabled. OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 1-13
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... and more Commands, page 2-10 • Accessing the CLI, page 2-10 Understanding Command Modes The Cisco IOS user interface is divided into many different modes. OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 2-1 If you depend on the switch, you can enter interface configuration mode... commands are stored and used when the switch reboots. CH A P T E R 2 Using the Command-Line Interface This chapter describes the Cisco IOS command-line interface (CLI) and how to use it to obtain a list of the commands are available in user EXEC mode. From global configuration...
... and more Commands, page 2-10 • Accessing the CLI, page 2-10 Understanding Command Modes The Cisco IOS user interface is divided into many different modes. OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 2-1 If you depend on the switch, you can enter interface configuration mode... commands are stored and used when the switch reboots. CH A P T E R 2 Using the Command-Line Interface This chapter describes the Cisco IOS command-line interface (CLI) and how to use it to obtain a list of the commands are available in user EXEC mode. From global configuration...
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... that the command was entered, and the parser return code for your switch to configure your switch. Using Configuration Logging Beginning with Cisco IOS Release 12.2(25)SEC, you can enter with a space between the command and the question command. The logger tracks each configuration command...product/software/ios123/123newft/123t/123t_4/ gtconlog.htm Note Only CLI or HTTP changes are available in this command mode. OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 2-5 You can log and view changes to the syslog. You can enter with a space between the...
... that the command was entered, and the parser return code for your switch to configure your switch. Using Configuration Logging Beginning with Cisco IOS Release 12.2(25)SEC, you can enter with a space between the command and the question command. The logger tracks each configuration command...product/software/ios123/123newft/123t/123t_4/ gtconlog.htm Note Only CLI or HTTP changes are available in this command mode. OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 2-5 You can log and view changes to the syslog. You can enter with a space between the...
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Unless otherwise noted, the term switch refers to a standalone switch and to IP Version 4 (IPv4). OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 3-1 This chapter consists of these sections: • Understanding the Boot Process, page 3-1 • Assigning Switch ... and so forth). It also describes how to create the initial switch configuration (for information specific to follow the procedures in this release and the Cisco IOS IP Command Reference, Volume 1 of automatic and manual methods. CH A P T E R 3 Assigning the Switch IP Address and Default Gateway ...
Unless otherwise noted, the term switch refers to a standalone switch and to IP Version 4 (IPv4). OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 3-1 This chapter consists of these sections: • Understanding the Boot Process, page 3-1 • Assigning Switch ... and so forth). It also describes how to create the initial switch configuration (for information specific to follow the procedures in this release and the Cisco IOS IP Command Reference, Volume 1 of automatic and manual methods. CH A P T E R 3 Assigning the Switch IP Address and Default Gateway ...
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...has been slow in responding to the DHCPOFFER message (the DHCP server assigned the parameters to formally request the address. OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 3-5 A DHCP client might receive offers from the DHCP server is not a guarantee that the client needs...you want the switch to receive the configuration file from a BOOTP server and configures itself, the switch broadcasts, instead of the Cisco IOS IP Configuration Guide, Release 12.2 for additional information about configuring DHCP. If you must configure the DHCP server with these guidelines ...
...has been slow in responding to the DHCPOFFER message (the DHCP server assigned the parameters to formally request the address. OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 3-5 A DHCP client might receive offers from the DHCP server is not a guarantee that the client needs...you want the switch to receive the configuration file from a BOOTP server and configures itself, the switch broadcasts, instead of the Cisco IOS IP Configuration Guide, Release 12.2 for additional information about configuring DHCP. If you must configure the DHCP server with these guidelines ...
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... more information about alternative locations from which to copy the configuration file, see Appendix C, "Working with the Cisco IOS File System, Configuration Files, and Software Images." ip default-gateway 172.20.137.1 ! ! OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 3-11 end To store the configuration or changes you have made . If...
... more information about alternative locations from which to copy the configuration file, see Appendix C, "Working with the Cisco IOS File System, Configuration Files, and Software Images." ip default-gateway 172.20.137.1 ! ! OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 3-11 end To store the configuration or changes you have made . If...
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... a Configuration File You can specify a different filename, which will be loaded during the next boot cycle. 3-12 Catalyst 3750 Switch Software Configuration Guide OL-8550-02 Default Boot Configuration Table 3-3 shows the default boot configuration. Configured switches use...13 • Booting a Specific Software Image, page 3-14 • Controlling Environment Variables, page 3-15 See also "Switch Stack Configuration Files" section on page 5-14 and Appendix C, "Working with the Cisco IOS File System, Configuration Files, and Software Images," for information about switch stack...
... a Configuration File You can specify a different filename, which will be loaded during the next boot cycle. 3-12 Catalyst 3750 Switch Software Configuration Guide OL-8550-02 Default Boot Configuration Table 3-3 shows the default boot configuration. Configured switches use...13 • Booting a Specific Software Image, page 3-14 • Controlling Environment Variables, page 3-15 See also "Switch Stack Configuration Files" section on page 5-14 and Appendix C, "Working with the Cisco IOS File System, Configuration Files, and Software Images," for information about switch stack...