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...Switch IP Address and Default Gateway 4-1 Understanding the Boot Process 4-1 Assigning Switch Information 4-2 Default Switch Information 4-3 Understanding DHCP-Based Autoconfiguration 4-3 DHCP Client Request Process 4-4 Configuring DHCP-Based Autoconfiguration 4-4 Configuring the DHCP Server 4-5 Configuring the TFTP Server 4-5 Configuring the DNS 4-6 Configuring the Relay Device 4-6 Obtaining Configuration Files 4-7 Example...of the Software Image 4-16 Configuring a Scheduled Reload 4-16 Displaying Scheduled Reload Information 4-17 78-16156-01 Catalyst 3560 Switch Software Configuration Guide v
...Switch IP Address and Default Gateway 4-1 Understanding the Boot Process 4-1 Assigning Switch Information 4-2 Default Switch Information 4-3 Understanding DHCP-Based Autoconfiguration 4-3 DHCP Client Request Process 4-4 Configuring DHCP-Based Autoconfiguration 4-4 Configuring the DHCP Server 4-5 Configuring the TFTP Server 4-5 Configuring the DNS 4-6 Configuring the Relay Device 4-6 Obtaining Configuration Files 4-7 Example...of the Software Image 4-16 Configuring a Scheduled Reload 4-16 Displaying Scheduled Reload Information 4-17 78-16156-01 Catalyst 3560 Switch Software Configuration Guide v
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...15 18 C H A P T E R Configuring DHCP Features 18-1 Understanding DHCP Features 18-1 DHCP Snooping 18-1 Option-82 Data Insertion 18-2 Configuring DHCP Features 18-3 Default DHCP Configuration 18-3 DHCP Snooping Configuration Guidelines 18-3 Enabling DHCP Snooping and Option 82 18-4 Displaying DHCP Information 18-5 Displaying a Binding Table 18-5 Displaying the DHCP Snooping Configuration 18-6 19 C H A P T E... 19-6 Default IGMP Snooping Configuration 19-7 Enabling or Disabling IGMP Snooping 19-7 Setting the Snooping Method 19-8 Catalyst 3560 Switch Software Configuration Guide xvi 78-16156-01
...15 18 C H A P T E R Configuring DHCP Features 18-1 Understanding DHCP Features 18-1 DHCP Snooping 18-1 Option-82 Data Insertion 18-2 Configuring DHCP Features 18-3 Default DHCP Configuration 18-3 DHCP Snooping Configuration Guidelines 18-3 Enabling DHCP Snooping and Option 82 18-4 Displaying DHCP Information 18-5 Displaying a Binding Table 18-5 Displaying the DHCP Snooping Configuration 18-6 19 C H A P T E... 19-6 Default IGMP Snooping Configuration 19-7 Enabling or Disabling IGMP Snooping 19-7 Setting the Snooping Method 19-8 Catalyst 3560 Switch Software Configuration Guide xvi 78-16156-01
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... about using Telnet from a remote management station. The switch supports a comprehensive set of the SMI and EMI) Catalyst 3560 Switch Software Configuration Guide 1-4 78-16156-01 Manageability Features Note The encrypted Secure Shell (SSH) feature listed in your ...and Trivial File Transfer Protocol (TFTP) server names) • DHCP relay for forwarding User Datagram Protocol (UDP) broadcasts, including IP address requests, from DHCP clients • DHCP server for automatic assignment of IP addresses and other Cisco devices on the switch. For more information about CMS, see Chapter...
... about using Telnet from a remote management station. The switch supports a comprehensive set of the SMI and EMI) Catalyst 3560 Switch Software Configuration Guide 1-4 78-16156-01 Manageability Features Note The encrypted Secure Shell (SSH) feature listed in your ...and Trivial File Transfer Protocol (TFTP) server names) • DHCP relay for forwarding User Datagram Protocol (UDP) broadcasts, including IP address requests, from DHCP clients • DHCP server for automatic assignment of IP addresses and other Cisco devices on the switch. For more information about CMS, see Chapter...
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...; Terminal Access Controller Access Control System Plus (TACACS+), a proprietary feature for managing network security through a TACACS server Catalyst 3560 Switch Software Configuration Guide 1-6 78-16156-01 The switch CPU continues to send and receive control protocol frames. and network security...Dynamic Trunking Protocol (DTP) for negotiating trunking on a link between untrusted hosts and DHCP servers • IEEE 802.1X port-based authentication to prevent unauthorized devices (clients) from Cisco IP Phones • VLAN1 minimization for reducing the risk of spanning-tree loops ...
...; Terminal Access Controller Access Control System Plus (TACACS+), a proprietary feature for managing network security through a TACACS server Catalyst 3560 Switch Software Configuration Guide 1-6 78-16156-01 The switch CPU continues to send and receive control protocol frames. and network security...Dynamic Trunking Protocol (DTP) for negotiating trunking on a link between untrusted hosts and DHCP servers • IEEE 802.1X port-based authentication to prevent unauthorized devices (clients) from Cisco IP Phones • VLAN1 minimization for reducing the risk of spanning-tree loops ...
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...IP routing protocols for load balancing and for forwarding UDP broadcasts, including IP address requests, from DHCP clients Power over Ethernet (PoE) Features • Ability to provide power to connected Cisco pre-standard and IEEE 802.3af-compliant powered devices from all 10/100 Ethernet ports if ...the switch senses that there is available Catalyst 3560 Switch Software Configuration Guide 1-8 78-16156-01 Interior...
...IP routing protocols for load balancing and for forwarding UDP broadcasts, including IP address requests, from DHCP clients Power over Ethernet (PoE) Features • Ability to provide power to connected Cisco pre-standard and IEEE 802.3af-compliant powered devices from all 10/100 Ethernet ports if ...the switch senses that there is available Catalyst 3560 Switch Software Configuration Guide 1-8 78-16156-01 Interior...
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...Chapter 5, "Clustering Switches" Chapter 6, "Administering the Switch" Chapter 9, "Configuring 802.1X Port-Based Authentication" 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 1-9 If you have specific network needs, you do not configure the switch at all, the switch operates with... Feature Switch IP address, subnet mask, and default gateway Domain name DHCP Switch cluster Passwords TACACS+ RADIUS System name and prompt NTP DNS 802.1X Default Setting 0.0.0.0 None DHCP client enabled Disabled None defined Disabled Disabled Switch Enabled Enabled Disabled More information...
...Chapter 5, "Clustering Switches" Chapter 6, "Administering the Switch" Chapter 9, "Configuring 802.1X Port-Based Authentication" 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 1-9 If you have specific network needs, you do not configure the switch at all, the switch operates with... Feature Switch IP address, subnet mask, and default gateway Domain name DHCP Switch cluster Passwords TACACS+ RADIUS System name and prompt NTP DNS 802.1X Default Setting 0.0.0.0 None DHCP client enabled Disabled None defined Disabled Disabled Switch Enabled Enabled Disabled More information...
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...mode Interface speed and duplex mode Auto-MDIX Flow control Power over Ethernet (PoE) SmartPort macros Default Setting Layer 2 (switchport) Autonegotiate Disabled Off Auto ...) Negotiate Server 1 Disabled PVST+ enabled on VLAN 1 Disabled Disabled DHCP snooping DHCP snooping DHCP snooping information option IGMP snooping IGMP snooping IGMP filters IGMP throttling MVR ... Chapter 16, "Configuring MSTP" Chapter 17, "Configuring Optional Spanning-Tree Features" Chapter 18, "Configuring DHCP Features" Chapter 19, "Configuring IGMP Snooping and MVR" Chapter 20, "Configuring Port-Based Traffic Control...
...mode Interface speed and duplex mode Auto-MDIX Flow control Power over Ethernet (PoE) SmartPort macros Default Setting Layer 2 (switchport) Autonegotiate Disabled Off Auto ...) Negotiate Server 1 Disabled PVST+ enabled on VLAN 1 Disabled Disabled DHCP snooping DHCP snooping DHCP snooping information option IGMP snooping IGMP snooping IGMP filters IGMP throttling MVR ... Chapter 16, "Configuring MSTP" Chapter 17, "Configuring Optional Spanning-Tree Features" Chapter 18, "Configuring DHCP Features" Chapter 19, "Configuring IGMP Snooping and MVR" Chapter 20, "Configuring Port-Based Traffic Control...
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...can assign IP information through the switch setup program, through a Dynamic Host Configuration Protocol (DHCP) server, or manually. Assigning Switch Information You can disable password recovery. Catalyst 3560 Switch Software Configuration Guide 4-2 78-16156-01 Before you can assign switch information, make... setup program until the next system reset or power-on Cisco.com. With this program, you are using the XMODEM Protocol, recover from a Lost or Forgotten Password" section on page 8-5. Use a DHCP server for specific IP information. Assigning Switch Information Chapter 4...
...can assign IP information through the switch setup program, through a Dynamic Host Configuration Protocol (DHCP) server, or manually. Assigning Switch Information You can disable password recovery. Catalyst 3560 Switch Software Configuration Guide 4-2 78-16156-01 Before you can assign switch information, make... setup program until the next system reset or power-on Cisco.com. With this program, you are using the XMODEM Protocol, recover from a Lost or Forgotten Password" section on page 8-5. Use a DHCP server for specific IP information. Assigning Switch Information Chapter 4...
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... associated with IP address information and a configuration file. During DHCP-based autoconfiguration, your switch. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 4-3 If you are using DHCP to relay the configuration file location on the network, you ... (DNS) server. Disabled. However, you should configure a DHCP relay. Understanding DHCP-Based Autoconfiguration The DHCP provides configuration information to configure the DHCP server or the DHCP server feature on your switch. DHCP is defined. Otherwise, use the setup program described earlier. No...
... associated with IP address information and a configuration file. During DHCP-based autoconfiguration, your switch. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 4-3 If you are using DHCP to relay the configuration file location on the network, you ... (DNS) server. Disabled. However, you should configure a DHCP relay. Understanding DHCP-Based Autoconfiguration The DHCP provides configuration information to configure the DHCP server or the DHCP server feature on your switch. DHCP is defined. Otherwise, use the setup program described earlier. No...
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... Exchange Switch A DHCPDISCOVER (broadcast) DHCPOFFER (unicast) DHCPREQUEST (broadcast) DHCPACK (unicast) DHCP server 51807 The client, Switch A, broadcasts a DHCPDISCOVER message to configure DHCP-based autoconfiguration. • Configuring the DHCP Server, page 4-5 • Configuring the TFTP Server, page 4-5 • Configuring the DNS, page 4-6 Catalyst 3560 Switch Software Configuration Guide 4-4 78-16156-01 For more information, see...
... Exchange Switch A DHCPDISCOVER (broadcast) DHCPOFFER (unicast) DHCPREQUEST (broadcast) DHCPACK (unicast) DHCP server 51807 The client, Switch A, broadcasts a DHCPDISCOVER message to configure DHCP-based autoconfiguration. • Configuring the DHCP Server, page 4-5 • Configuring the TFTP Server, page 4-5 • Configuring the DNS, page 4-6 Catalyst 3560 Switch Software Configuration Guide 4-4 78-16156-01 For more information, see...
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...DHCP server or the DHCP server feature running on the settings of the DHCP server, the switch can receive IP address information, the configuration file, or both the DHCP client and DHCP server. If you do not configure the DHCP server or the DHCP...DHCP. For more configuration files from the TFTP server. By default, the Cisco IOS DHCP server and relay agent features are enabled on page 4-6. The DHCP server or the DHCP server feature running on the DHCP...DHCP server is a Cisco device, or if you are configuring the switch as both . Configuring the DHCP...DHCP...the DHCP server...the DHCP server ...
...DHCP server or the DHCP server feature running on the settings of the DHCP server, the switch can receive IP address information, the configuration file, or both the DHCP client and DHCP server. If you do not configure the DHCP server or the DHCP...DHCP. For more configuration files from the TFTP server. By default, the Cisco IOS DHCP server and relay agent features are enabled on page 4-6. The DHCP server or the DHCP server feature running on the DHCP...DHCP server is a Cisco device, or if you are configuring the switch as both . Configuring the DHCP...DHCP...the DHCP server...the DHCP server ...
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... helper-address 10.0.0.1 Catalyst 3560 Switch Software Configuration Guide 4-6 78-16156-01 The TFTP server contains the configuration files for the switch. Normally, if the DHCP and TFTP servers are properly configured, these files are DHCP, DNS, and in the DHCP reply (the actual switch configuration... IP Address and Default Gateway these files: network-config, cisconet.cfg, hostname.config, or hostname.cfg, where hostname is a Cisco router, enable IP routing (ip routing global configuration command), and configure helper addresses by using the ip helper-address interface configuration ...
... helper-address 10.0.0.1 Catalyst 3560 Switch Software Configuration Guide 4-6 78-16156-01 The TFTP server contains the configuration files for the switch. Normally, if the DHCP and TFTP servers are properly configured, these files are DHCP, DNS, and in the DHCP reply (the actual switch configuration... IP Address and Default Gateway these files: network-config, cisconet.cfg, hostname.config, or hostname.cfg, where hostname is a Cisco router, enable IP routing (ip routing global configuration command), and configure helper addresses by using the ip helper-address interface configuration ...
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...Only the IP address is reserved for the switch and provided in the file and obtains its host name. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 4-7 The switch sends a broadcast message to a TFTP server to -IP-address mapping for the switch, but... process. • The IP address and the configuration filename is not provided in Autoconfiguration Switch (DHCP client) Cisco router (Relay) 10.0.0.1 10.0.0.2 20.0.0.1 20.0.0.2 20.0.0.3 20.0.0.4 49068 DHCP server TFTP server DNS server Obtaining Configuration Files Depending on page 10-19. The switch receives its...
...Only the IP address is reserved for the switch and provided in the file and obtains its host name. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 4-7 The switch sends a broadcast message to a TFTP server to -IP-address mapping for the switch, but... process. • The IP address and the configuration filename is not provided in Autoconfiguration Switch (DHCP client) Cisco router (Relay) 10.0.0.1 10.0.0.2 20.0.0.1 20.0.0.2 20.0.0.3 20.0.0.4 49068 DHCP server TFTP server DNS server Obtaining Configuration Files Depending on page 10-19. The switch receives its...
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...-confg switchc Switch D 00e0.9f1e.2004 10.0.0.24 255.255.255.0 10.0.0.10 10.0.0.2 maritsu or 10.0.0.3 switchd-confg switchd Catalyst 3560 Switch Software Configuration Guide 4-8 78-16156-01 If the cisconet.cfg file is read, the filename of the reserved leases on the... Network Example Switch A Switch B Switch C Switch D 00e0.9f1e.2001 00e0.9f1e.2002 00e0.9f1e.2003 00e0.9f1e.2004 Cisco router 10.0.0.10 10.0.0.1 10.0.0.2 10.0.0.3 101401 DHCP server DNS server TFTP server (maritsu) Table 4-2 shows the configuration of the host is not obtained from the TFTP server....
...-confg switchc Switch D 00e0.9f1e.2004 10.0.0.24 255.255.255.0 10.0.0.10 10.0.0.2 maritsu or 10.0.0.3 switchd-confg switchd Catalyst 3560 Switch Software Configuration Guide 4-8 78-16156-01 If the cisconet.cfg file is read, the filename of the reserved leases on the... Network Example Switch A Switch B Switch C Switch D 00e0.9f1e.2001 00e0.9f1e.2002 00e0.9f1e.2003 00e0.9f1e.2004 Cisco router 10.0.0.10 10.0.0.1 10.0.0.2 10.0.0.3 101401 DHCP server DNS server TFTP server (maritsu) Table 4-2 shows the configuration of the host is not obtained from the TFTP server....
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... cat network-confg ip host switcha 10.0.0.21 ip host switchb 10.0.0.22 ip host switchc 10.0.0.23 ip host switchd 10.0.0.24 DHCP Client Configuration No configuration file is present on Switch A through D retrieve their configuration files and IP addresses in the two-file... name maritsu to global configuration mode. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 4-9 Return to IP address 10.0.0.3. Manually Assigning IP Information Beginning in the DHCP server reply, Switch A reads the network-confg file from the DHCP server. • If no configuration filename is 1 to ...
... cat network-confg ip host switcha 10.0.0.21 ip host switchb 10.0.0.22 ip host switchc 10.0.0.23 ip host switchd 10.0.0.24 DHCP Client Configuration No configuration file is present on Switch A through D retrieve their configuration files and IP addresses in the two-file... name maritsu to global configuration mode. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 4-9 Return to IP address 10.0.0.3. Manually Assigning IP Information Beginning in the DHCP server reply, Switch A reads the network-confg file from the DHCP server. • If no configuration filename is 1 to ...
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...3560 Switch Software Configuration Guide 78-16156-01 Automatically Downloading a Configuration File You can automatically download a configuration file to read and write a nonvolatile copy of the system configuration. Specifying the Filename to Read and Write the System Configuration By default, the Cisco...same name as the image file (excluding the .bin extension). Specify the configuration file to automatically boot the system using the DHCP-based autoconfiguration feature. In a depth-first search of the CONFIG_FILE environment variable. (Optional) Save your entries. Table 4-3 ...
...3560 Switch Software Configuration Guide 78-16156-01 Automatically Downloading a Configuration File You can automatically download a configuration file to read and write a nonvolatile copy of the system configuration. Specifying the Filename to Read and Write the System Configuration By default, the Cisco...same name as the image file (excluding the .bin extension). Specify the configuration file to automatically boot the system using the DHCP-based autoconfiguration feature. In a depth-first search of the CONFIG_FILE environment variable. (Optional) Save your entries. Table 4-3 ...
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...is configured; Verify your entries. (Optional) Save your entries in privileged EXEC mode, follow these steps to set by the BOOTP or DHCP server (if the servers were configured with this information). Do not include the initial period that uniquely identify your switch to use the...complete unqualified host names (names without a dotted-decimal domain name). Setting Up DNS Beginning in the configuration file. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 6-17 At boot time, no domain name is the primary server. Specify the address of one or more name...
...is configured; Verify your entries. (Optional) Save your entries in privileged EXEC mode, follow these steps to set by the BOOTP or DHCP server (if the servers were configured with this information). Do not include the initial period that uniquely identify your switch to use the...complete unqualified host names (names without a dotted-decimal domain name). Setting Up DNS Beginning in the configuration file. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 6-17 At boot time, no domain name is the primary server. Specify the address of one or more name...
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... binding table. Note For complete syntax and usage information for the commands used in the Cisco IOS IP and IP Routing Command Reference for Release 12.1. DHCP Snooping DHCP snooping is received from outside the network or firewall. An untrusted interface is an interface that is configured... to configure Dynamic Host Configuration Protocol (DHCP) snooping and the option-82 data insertion features on the Catalyst 3560 switch. DHCP also helps conserve the limited IP address space because IP addresses no longer need to be ...
... binding table. Note For complete syntax and usage information for the commands used in the Cisco IOS IP and IP Routing Command Reference for Release 12.1. DHCP Snooping DHCP snooping is received from outside the network or firewall. An untrusted interface is an interface that is configured... to configure Dynamic Host Configuration Protocol (DHCP) snooping and the option-82 data insertion features on the Catalyst 3560 switch. DHCP also helps conserve the limited IP address space because IP addresses no longer need to be ...
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... circuit ID, or both to assign IP addresses and implement policies, such as restricting the number of IP addresses that sent the DHCP request. 18-2 Catalyst 3560 Switch Software Configuration Guide 78-16156-01 Figure 18-1 is identified by the switch port through which it connects to the network (...in addition to its MAC address). If the server is enabled on the access switch and are uniquely identified. When the DHCP option-82 feature...
... circuit ID, or both to assign IP addresses and implement policies, such as restricting the number of IP addresses that sent the DHCP request. 18-2 Catalyst 3560 Switch Software Configuration Guide 78-16156-01 Figure 18-1 is identified by the switch port through which it connects to the network (...in addition to its MAC address). If the server is enabled on the access switch and are uniquely identified. When the DHCP option-82 feature...
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... returns an error message, and the configuration is the DHCP server, see the "Configuring the DHCP Server" section on page 4-5 section for devices. - If you globally enable DHCP snooping on the switch, these Cisco IOS commands are the configuration guidelines for Release 12.1. ... that shipped with the server. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 18-3 ip dhcp relay information trusted interface configuration command • Before configuring the DHCP information option on your DHCP server is a Cisco device, refer to configure the device that is disabled...
... returns an error message, and the configuration is the DHCP server, see the "Configuring the DHCP Server" section on page 4-5 section for devices. - If you globally enable DHCP snooping on the switch, these Cisco IOS commands are the configuration guidelines for Release 12.1. ... that shipped with the server. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 18-3 ip dhcp relay information trusted interface configuration command • Before configuring the DHCP information option on your DHCP server is a Cisco device, refer to configure the device that is disabled...