Cisco tftp server

To Configure ToD, and TFTP Services See the following configuration tasks required to configure time-of-day service, and TFTP service on a Cisco CMTS: Configuration Examples This section provides examples for the following configurations: ToD Server Example The following example shows a typical ToD server configuration: service udp-small-servers max-servers no-limit cable time-server These are the only commands required to enable the ToD server. TFTP Server Example The following lines are an excerpt from a configuration that includes a TFTP server. Change the files listed with the tftp-server command to match the specific files that are on your system. ! Enable the user of unlimited small servers service udp-small-servers max-servers no-limit!...! Enable the TFTP server and specify the files that can be! downloaded along with their aliases tftp-server disk0:gold.cm alias gold.cm tftp-server disk0:silver.cm alias silver.cm tftp-server disk0:bronze.cm alias bronze.cm tftp-server disk0:ubr924-k8y5-mz.bin alias ubr924-codefile tftp-server disk0:ubr925-k9v9y5-mz.bin alias ubr925-codefile Additional References Technical Assistance Description Link The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies. To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds. Access to most tools on the Cisco Support website requires a Cisco.com user ID and password. Feature Information for the DHCP, ToD, and TFTP Services for the CMTS Routers Use Cisco Feature Navigator to find information about the platform support

The ToD server on the Cisco CMTS. Step 5 exit Example: Router(config)# exitRouter# Exits global configuration mode. Disabling Time-of-Day Service To disable the ToD server, use the following procedure, beginning in EXEC mode. Procedure Command or Action Purpose Step 1 enable Example: Router> enableRouter# Enables privileged EXEC mode. Enter your password if prompted. Step 2 configure terminal Example: Router# configure terminal Router(config)# Enters global configuration mode. Step 3 no cable time-server Example: Router(config)# cable time-serverRouter(config)# Disables the ToD server on the Cisco CMTS. Step 4 no service udp-small-servers Example: Router(config)# no service udp-small-servers Router(config)# (Optional) Disables the use of all minor UDP servers. Note Do not disable the minor UDP servers if you are also enabling the other DHCP or TFTP servers. Step 5 exit Example: Router(config)# exit Router# Exits global configuration mode. Configuring TFTP Service To configure TFTP service on a Cisco CMTS where the CMTS can act as a TFTP server and download a DOCSIS configuration file to cable modems, perform the following steps: Create the DOCSIS configuration files using the DOCSIS configuration editor of your choice. Copy all desired files (DOCSIS configuration files, software upgrade files, and Cisco IOS configuration files) to the Flash memory device on the Cisco CMTS. Typically, this is done by placing the files first on an external TFTP server, and then using TFTP commands to transfer them to the router’s Flash memory. Enable the TFTP server on the Cisco CMTS with the tftp-server command. Each configuration task is required unless otherwise listed

As a network engineer, we can garuentee you there will come a point in your career where you must upgrade the Cisco IOS on a Router or Switch. This lab will discuss and demonstrate the upgrade the Cisco IOS update procedure.Real World ApplicationUpgrading the IOS on a Cisco device is a common task among Cisco Engineers as New IOS Images typically are released within 3 months give or take. New releases include bug fixes and new features available to the device. Upgrading the Cisco IOS on a Router or Switch is a MUST KNOW for any Cisco Network Engineer.Lab PrerequisitesBoot R1 in the Free CCNA workbook GNS3 Lab Topology.Establish an active Console Session to R1A Newer Cisco IOS Image compatible with your Cisco Device.A TFTP Server is required for this lab. You may need to download Solarwinds TFTP Server and configure it prior to attempting this lab.Lab ObjectivesIf needed, Download and Install Solarwinds TFTP Server.Place the New Cisco IOS Image file in the TFTP Server Root Directory.Configure your TFTP Server and Cisco device to be within the same ip subnet, ie; 10.1.1.1/24 & 10.1.1.2/24Ensure you have Ethernet connectivity from your TFTP server to the Cisco device which you’re upgrading.Copy the new image file from the tftp server to your Cisco device, you will be prompted to erase the flash memory.Once the new Cisco IOS Image is copied to the device flash memory, reboot the device and verify the upgrade was successful.Lab InstructionPlease note that this lab requires a REAL Cisco Router or Switch to perform as GNS3 does not load images from flash memory. You can however perform this procedure on GNS3 but you will not be able to reboot the device and verify a successful upgrade.Upgrading the Internetwork Operating System (IOS) on a Cisco device is a pretty common procedure as updated IOS images are released at least once every three months to fix bugs and provide new features and enable new device hardware.First off you’ll need a TFTP server installed and running on your PC with a crossover cable running from your PC to a router, or a regular patch cable running from the PC to a switch.To complete the 3rd objective of this lab you’ll need a console session to a Cisco router or Switch. Ensure that the IP Address you’re assigning to the Cisco device is in the same subnet as the PC. For this lab, we’ll use 10.1.1.1/24 for the PC and 10.1.1.2/24 for the Cisco device. The objective requires you to configure the IP address on the Ethernet interface connected to the PC. In the example shown below, interface FastEthernet0/0 is directly connected to the PC;Router con0 is now availablePress RETURN to get started.Router>enablePassword:

Host account and access their Webex Meetings, if the meeting site requires credentials. Important If you specify an invalid meeting site, users cannot add, or edit, any meetings sites in the client user interface. Example: Meeting_Site_URL Meeting_Server_Address_Backup Applies to all the Cisco Jabber clients. Specifies the secondary Cisco Webex Meetings site URL for users. Example: meeting_site_URL Meeting_Server_Address_Backup2 Applies to all the Cisco Jabber clients. Specifies the tertiary Cisco Webex Meetings site URL for users. Example: meeting_site_URL TftpServer1 Applies to all the Cisco Jabber clients. Specifies the address of the primary Cisco Unified Communications Manager TFTP service where device configuration files reside. Set one of the following as the value: Hostname (hostname) IP address (123.45.254.1) FQDN (hostname.domain.com) You should set this parameter in the client configuration only if: You deploy the client in phone mode. The TFTP server address for the device configuration is different to the TFTP server address for the client configuration. During installation, you should set the address of the TFTP server where the client configuration file resides with the following argument: TFTP. Example: hostname TftpServer2 Applies to all the Cisco Jabber clients. Specifies the address of the secondary Cisco Unified Communications Manager TFTP service. Example: hostname useCUCMGroupForCti Applies to the Cisco Jabber desktop clients. Specifies if the Cisco Unified Communications Manager Group handles load balancing for CTI servers. Set one of the following values: true—The Cisco Unified Communications Manager Group handles CTI load balancing. You should set this value in phone mode deployments only. In full UC mode, the presence server automatically handles CTI load balancing. false (default)—The Cisco Unified Communications Manager Group does not handle CTI load balancing. Example: true UseSIPforMobiles Applies to Cisco Jabber for mobile clients. Specifies that SIP URIs are always shown, even if in the same domain. true—Always show SIP URI, even for the same domain. false (default)—Show domain name for the same domain, and show SIP URI for different domains.

DHCP, ToD, and TFTP Services for CMTS Routers Note Cisco IOS-XE Release 16.5.1 integrates support for this feature on Cisco CMTS routers. This document describes how to configure Cisco Cable Modem Termination System (CMTS) platforms so that they support onboard servers that provide Dynamic Host Configuration Protocol (DHCP), Time-of-Day (ToD), and Trivial File Transfer Protocol (TFTP) services for use in Data-over-Cable Service Interface Specification (DOCSIS) networks. In addition, this document provides information about optional configurations that can be used with external DHCP servers. Prerequisites for DHCP, ToD, and TFTP Services To use the Cisco CMTS as the ToD server, either standalone or with other external ToD servers, you must configure the DHCP server to provide the IP address of the Cisco CMTS as one of the valid ToD servers (DHCP option 4) for cable modems. Restrictions for DHCP, ToD, and TFTP Services The ToD server must use the UDP protocol to conform to DOCSIS specifications. For proper operation of the DOCSIS network, especially a DOCSIS 1.1 network using BPI+ encryption and authentication, the system clock on the Cisco CMTS must be set accurately. You can achieve this by manually using the set clock command, or by configuring the CMTS to use either the Network Time Protocol (NTP) or the Simple Network Time Protocol (SNTP). Cisco cBR series routers do not support internal DHCP servers. Information About DHCP, ToD, and TFTP Services This section provides the following information about the DHCP, ToD, and TFTP Services feature, and its individual components: Feature