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Contents A A P P E N D I X B A P P E N D I X Replacing a Failed Command Switch with a Cluster Member 28-9 Replacing a Failed Command Switch with Another Switch 28-10 Recovering from Lost Member Connectivity 28-11 Preventing Autonegotiation Mismatches 28-12 Troubleshooting LRE Port Configuration 28-12 GBIC and SFP Module Security ... Download or Upload a Configuration File By Using TFTP B-11 Downloading the Configuration File By Using TFTP B-12 Uploading the Configuration File By Using TFTP B-12 Catalyst 2950 Desktop Switch Software Configuration Guide xxii 78-14982-01
Contents A A P P E N D I X B A P P E N D I X Replacing a Failed Command Switch with a Cluster Member 28-9 Replacing a Failed Command Switch with Another Switch 28-10 Recovering from Lost Member Connectivity 28-11 Preventing Autonegotiation Mismatches 28-12 Troubleshooting LRE Port Configuration 28-12 GBIC and SFP Module Security ... Download or Upload a Configuration File By Using TFTP B-11 Downloading the Configuration File By Using TFTP B-12 Uploading the Configuration File By Using TFTP B-12 Catalyst 2950 Desktop Switch Software Configuration Guide xxii 78-14982-01
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...for automatically configuring the switch during DHCP-based autoconfiguration Note DHCP replaces the Bootstrap Protocol (BOOTP) feature autoconfiguration to ensure retrieval of configuration files by unicast TFTP messages. Note See the "Advantages of bandwidth between switches, routers, and servers... and Clustering Switches" section on Gigabit Ethernet ports operating in earlier software releases for this switch. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 1-3 The Catalyst 2950G-12-EI, 2950G-24-EI, 2950G-24-EI-DC, and 2950G-48-EI switches running Cisco IOS Release ...
...for automatically configuring the switch during DHCP-based autoconfiguration Note DHCP replaces the Bootstrap Protocol (BOOTP) feature autoconfiguration to ensure retrieval of configuration files by unicast TFTP messages. Note See the "Advantages of bandwidth between switches, routers, and servers... and Clustering Switches" section on Gigabit Ethernet ports operating in earlier software releases for this switch. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 1-3 The Catalyst 2950G-12-EI, 2950G-24-EI, 2950G-24-EI-DC, and 2950G-48-EI switches running Cisco IOS Release ...
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... message also displays in that field or table cell is communicating with the switch or if you make . If there is the new HTTP port number). Catalyst 1900 and Catalyst 2820 - Changes to the switch hardware installation guide. Error Checking A red border around a field or table... border replaces the red border until you cancel the change . When you save the changes or if you either save or cancel the change , the green border disappears. For information about the error. 3-32 Catalyst 2950 Desktop Switch Software Configuration Guide 78-14982-01 Catalyst 2900 XL switches with...
... message also displays in that field or table cell is communicating with the switch or if you make . If there is the new HTTP port number). Catalyst 1900 and Catalyst 2820 - Changes to the switch hardware installation guide. Error Checking A red border around a field or table... border replaces the red border until you cancel the change . When you save the changes or if you either save or cancel the change , the green border disappears. For information about the error. 3-32 Catalyst 2950 Desktop Switch Software Configuration Guide 78-14982-01 Catalyst 2900 XL switches with...
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...does not forward broadcast packets, but it forwards packets based on your switch. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 4-3 Understanding DHCP-Based Autoconfiguration The DHCP provides configuration ...information to configure the DHCP server for allocating network addresses to configure a Trivial File Transfer Protocol (TFTP) server and a Domain Name System (DNS) server. DHCP-based autoconfiguration replaces...
...does not forward broadcast packets, but it forwards packets based on your switch. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 4-3 Understanding DHCP-Based Autoconfiguration The DHCP provides configuration ...information to configure the DHCP server for allocating network addresses to configure a Trivial File Transfer Protocol (TFTP) server and a Domain Name System (DNS) server. DHCP-based autoconfiguration replaces...
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... name as the unique ID, or enter an arbitrary text string for string string as the unique ID. 5-10 Catalyst 2950 Desktop Switch Software Configuration Guide 78-14982-01 Note The config-cli interface configuration command accepts the special directive character & that acts as the ...}, enter hardware-serial to set the switch serial number as a placeholder for the interface name. exit Return to connect through the interface defined in cns config connect-intf. Enter line-cli to connect to the Configuration Registrar whose IP address is replaced with the interface name. When the ...
... name as the unique ID, or enter an arbitrary text string for string string as the unique ID. 5-10 Catalyst 2950 Desktop Switch Software Configuration Guide 78-14982-01 Note The config-cli interface configuration command accepts the special directive character & that acts as the ...}, enter hardware-serial to set the switch serial number as a placeholder for the interface name. exit Return to connect through the interface defined in cns config connect-intf. Enter line-cli to connect to the Configuration Registrar whose IP address is replaced with the interface name. When the ...
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...a client to the network. If the port becomes unauthorized (re-authentication fails or an EAPOL-logoff message is replaced with another client, the switch changes the port link state to down, and the port returns to all other hosts indirectly attached to the ... state changes to the Default Values, page 8-14 (optional) 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 8-5 Figure 8-3 Wireless LAN Example Wireless clients Access point Catalyst 2950 or 3550 switch Authentication server (RADIUS) 74617 Configuring 802.1X Authentication These sections describe how to...
...a client to the network. If the port becomes unauthorized (re-authentication fails or an EAPOL-logoff message is replaced with another client, the switch changes the port link state to down, and the port returns to all other hosts indirectly attached to the ... state changes to the Default Values, page 8-14 (optional) 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 8-5 Figure 8-3 Wireless LAN Example Wireless clients Access point Catalyst 2950 or 3550 switch Authentication server (RADIUS) 74617 Configuring 802.1X Authentication These sections describe how to...
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The BackboneFast feature is supported only when the switch is also enabled, all switches in the network. With UplinkFast, the backup interfaces (in the blocked state) replace the root port in privileged EXEC mode, follow these steps to enable BackboneFast: Step 1 Step 2 Step 3 Step 4 Step ...by the UplinkFast feature. Enabling Root Guard Root guard enabled on your switch. Do not enable the root guard on the interface. Return to privileged EXEC mode. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 13-19 Enable root guard on interfaces to which...
The BackboneFast feature is supported only when the switch is also enabled, all switches in the network. With UplinkFast, the backup interfaces (in the blocked state) replace the root port in privileged EXEC mode, follow these steps to enable BackboneFast: Step 1 Step 2 Step 3 Step 4 Step ...by the UplinkFast feature. Enabling Root Guard Root guard enabled on your switch. Do not enable the root guard on the interface. Return to privileged EXEC mode. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 13-19 Enable root guard on interfaces to which...
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... The message is the same on echoing as its neighbors. UDLD sends at least one . If the switch receives a new hello message before an older cache entry ages, the switch replaces the older entry with the new one message to inform the neighbors to receive an echo in reply. ...Whenever an interface is disabled and UDLD is running, whenever UDLD is disabled on an interface, or whenever the switch is shut down. TX RX Switch B 43583 19-2 Catalyst 2950 Desktop Switch ...
... The message is the same on echoing as its neighbors. UDLD sends at least one . If the switch receives a new hello message before an older cache entry ages, the switch replaces the older entry with the new one message to inform the neighbors to receive an echo in reply. ...Whenever an interface is disabled and UDLD is running, whenever UDLD is disabled on an interface, or whenever the switch is shut down. TX RX Switch B 43583 19-2 Catalyst 2950 Desktop Switch ...
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...-The Simple Network Management Protocol, a Full Internet Standard, defined in RFC 1157. • SNMPv2C replaces the Party-based Administrative and Security Framework of SNMPv2Classic with in SNMPv1. SNMPv2-Version 2 of security models and levels. 24-2 Catalyst 2950 Desktop Switch Software Configuration Guide 78-14982-01 SNMPv3 provides secure access to 2275. Authentication-determining that...
...-The Simple Network Management Protocol, a Full Internet Standard, defined in RFC 1157. • SNMPv2C replaces the Party-based Administrative and Security Framework of SNMPv2Classic with in SNMPv1. SNMPv2-Version 2 of security models and levels. 24-2 Catalyst 2950 Desktop Switch Software Configuration Guide 78-14982-01 SNMPv3 provides secure access to 2275. Authentication-determining that...
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...normal commands to the release notes. 28-8 Catalyst 2950 Desktop Switch Software Configuration Guide 78-14982-01 This section describes two solutions for supplying redundancy to recover from a failed command switch. Using Recovery Procedures Chapter 28 Troubleshooting Step ...memory: switch# copy flash:config.text system:running-config Source filename [config.text]? Note HSRP is the preferred method for replacing a failed command switch: • Replacing a failed command switch with a cluster member • Replacing a failed command switch with the member switches is now...
...normal commands to the release notes. 28-8 Catalyst 2950 Desktop Switch Software Configuration Guide 78-14982-01 This section describes two solutions for supplying redundancy to recover from a failed command switch. Using Recovery Procedures Chapter 28 Troubleshooting Step ...memory: switch# copy flash:config.text system:running-config Source filename [config.text]? Note HSRP is the preferred method for replacing a failed command switch: • Replacing a failed command switch with a cluster member • Replacing a failed command switch with the member switches is now...
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... setup? [yes/no cluster commander-address Step 8 Step 9 Return to start the setup program. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 28-9 End with configuration dialog? [yes/no ]: y At any prompt. Use ctrl-c to the ...EXEC mode. Switch# setup --- Switch# configure terminal Enter configuration commands, one per line. Switch(config)# no ]: Step 10 Enter Y at any point you for help. Chapter 28 Troubleshooting Using Recovery Procedures Replacing a Failed Command Switch with a Cluster Member To replace a failed command switch with a ...
... setup? [yes/no cluster commander-address Step 8 Step 9 Return to start the setup program. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 28-9 End with configuration dialog? [yes/no ]: y At any prompt. Use ctrl-c to the ...EXEC mode. Switch# setup --- Switch# configure terminal Enter configuration commands, one per line. Switch(config)# no ]: Step 10 Enter Y at any point you for help. Chapter 28 Troubleshooting Using Recovery Procedures Replacing a Failed Command Switch with a Cluster Member To replace a failed command switch with a ...
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...(virtual terminal) password, recall that the addresses are in the setup program. Replacing a Failed Command Switch with Another Switch To replace a failed command switch with configuration dialog? [yes/no]: y At any point you for the ...switch prompt, enter privileged EXEC mode: Switch> enable Switch# Enter the password of the new command switch. Default settings are correct. Using Recovery Procedures Chapter 28 Troubleshooting Step 11 Step 12 Step 13 Step 14 Step 15 Step 16 Step 17 Step 18 Respond to the questions in square brackets '[]'. 28-10 Catalyst 2950 Desktop Switch...
...(virtual terminal) password, recall that the addresses are in the setup program. Replacing a Failed Command Switch with Another Switch To replace a failed command switch with configuration dialog? [yes/no]: y At any point you for the ...switch prompt, enter privileged EXEC mode: Switch> enable Switch# Enter the password of the new command switch. Default settings are correct. Using Recovery Procedures Chapter 28 Troubleshooting Step 11 Step 12 Step 13 Step 14 Step 15 Step 16 Step 17 Step 18 Respond to the questions in square brackets '[]'. 28-10 Catalyst 2950 Desktop Switch...
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... to degrade. Change to the command reference for this release. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 28-13 For more information about the LRE profiles, see the... to verify the port status, and enter a time interval for recovering from the switch, and replace it makes data more susceptible to increase link bandwidth. If the serial number, the... Cisco-approved Gigabit Interface Converter (GBIC) modules have a serial EEPROM that has the interleaver feature enabled, such as LRE-5LL, LRE-10LL, or LRE-15LL. After inserting a Cisco-...
... to degrade. Change to the command reference for this release. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 28-13 For more information about the LRE profiles, see the... to verify the port status, and enter a time interval for recovering from the switch, and replace it makes data more susceptible to increase link bandwidth. If the serial number, the... Cisco-approved Gigabit Interface Converter (GBIC) modules have a serial EEPROM that has the interleaver feature enabled, such as LRE-5LL, LRE-10LL, or LRE-15LL. After inserting a Cisco-...
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... the IP address in a text editor, such as if you must list commands logically so that the system can be replaced or negated. Copy the configuration file to an exact copy of the existing configuration file and the copied configuration file, with...and reload the switch. The switch does not erase the existing running configuration is erased. If a command in the copied configuration file replaces a command in the existing configuration file, the existing command is saved in a particular command than permanently. B-10 Catalyst 2950 Desktop Switch Software Configuration Guide...
... the IP address in a text editor, such as if you must list commands logically so that the system can be replaced or negated. Copy the configuration file to an exact copy of the existing configuration file and the copied configuration file, with...and reload the switch. The switch does not erase the existing running configuration is erased. If a command in the copied configuration file replaces a command in the existing configuration file, the existing command is saved in a particular command than permanently. B-10 Catalyst 2950 Desktop Switch Software Configuration Guide...
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...after a download. The FTP and RCP transport mechanisms provide faster performance and more information about the file prompt command, refer to the Cisco IOS Command Reference for confirmation on the system board Flash memory (flash:). You can use the dir filesystem: privileged EXEC command to... reliable delivery of the same type. B-20 Catalyst 2950 Desktop Switch Software Configuration Guide 78-14982-01 Depending on the setting of server you might have stored in Flash memory after it has been deleted. You can replace the current image with Software Images This section ...
...after a download. The FTP and RCP transport mechanisms provide faster performance and more information about the file prompt command, refer to the Cisco IOS Command Reference for confirmation on the system board Flash memory (flash:). You can use the dir filesystem: privileged EXEC command to... reliable delivery of the same type. B-20 Catalyst 2950 Desktop Switch Software Configuration Guide 78-14982-01 Depending on the setting of server you might have stored in Flash memory after it has been deleted. You can replace the current image with Software Images This section ...
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... with Software Images Downloading an Image File By Using TFTP You can download a new image file and replace the current image or keep the current image. Directory and image names are case sensitive. The download algorithm...server and overwrite the existing image. see the "Preparing to download a new image from the TFTP server to the switch, and keep the current image, skip Step 3. Directory and image names are case sensitive. Beginning in privileged EXEC mode...the new image, and then reloads the software. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide B-23
... with Software Images Downloading an Image File By Using TFTP You can download a new image file and replace the current image or keep the current image. Directory and image names are case sensitive. The download algorithm...server and overwrite the existing image. see the "Preparing to download a new image from the TFTP server to the switch, and keep the current image, skip Step 3. Directory and image names are case sensitive. Beginning in privileged EXEC mode...the new image, and then reloads the software. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide B-23
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... configuration lines: hostname Switch1 ip rcmd remote-username User0 If the switch IP address translates to Switch1.company.com, the .rhosts file for the remote username. You can download a new image file and replace or keep the current image, skip Step 6. Include the username ...this line: Switch1.company.com Switch1 For more information, refer to set the RCP username. B-30 Catalyst 2950 Desktop Switch Software Configuration Guide 78-14982-01 Log into the switch through 6 to accept the RCP write request from the directory associated with the IOS File System, Configuration...
... configuration lines: hostname Switch1 ip rcmd remote-username User0 If the switch IP address translates to Switch1.company.com, the .rhosts file for the remote username. You can download a new image file and replace or keep the current image, skip Step 6. Include the username ...this line: Switch1.company.com Switch1 For more information, refer to set the RCP username. B-30 Catalyst 2950 Desktop Switch Software Configuration Guide 78-14982-01 Log into the switch through 6 to accept the RCP write request from the directory associated with the IOS File System, Configuration...
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... lost member connectivity 28-11 redundant 6-12, 6-22 replacing with another switch 28-10 with cluster member 28-9 requirements 6-3 standby (SC) 6-12, 6-23 See also candidate switch, cluster standby group, member switch, and standby command switch community strings configuring 6-16, 24-7 for cluster switches 24-4 in clusters 6-16 overview 24-4 SNMP 6-16 configuration controller for LRE upgrade 10-17...
... lost member connectivity 28-11 redundant 6-12, 6-22 replacing with another switch 28-10 with cluster member 28-9 requirements 6-3 standby (SC) 6-12, 6-23 See also candidate switch, cluster standby group, member switch, and standby command switch community strings configuring 6-16, 24-7 for cluster switches 24-4 in clusters 6-16 overview 24-4 SNMP 6-16 configuration controller for LRE upgrade 10-17...
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...determining 12-2 BPDU format 12-5 processing 12-6 configuration guidelines 12-12 designated port, defined 12-2 designated switch, defined 12-2 interoperability with 802.1D described 12-11 restarting migration process 12-22 topology changes 12-6...service-provider network, MSTP and RSTP 12-1 set-request operation 24-4 settings duplex mode 10-7 speed 10-7 set-top box, television 1-16 setup program, failed command switch replacement 28-9, 28-10 severity levels, defining in system messages ...12 Simple Network Management Protocol See SNMP Catalyst 2950 Desktop Switch Software Configuration Guide IN-23
...determining 12-2 BPDU format 12-5 processing 12-6 configuration guidelines 12-12 designated port, defined 12-2 designated switch, defined 12-2 interoperability with 802.1D described 12-11 restarting migration process 12-22 topology changes 12-6...service-provider network, MSTP and RSTP 12-1 set-request operation 24-4 settings duplex mode 10-7 speed 10-7 set-top box, television 1-16 setup program, failed command switch replacement 28-9, 28-10 severity levels, defining in system messages ...12 Simple Network Management Protocol See SNMP Catalyst 2950 Desktop Switch Software Configuration Guide IN-23