You must also enable the router to act as an rsh or rcp server. To enable the router to act as an rsh server, issue the ip rcmd rsh-enable command. To enable the router to act as an rcp server, issue the ip rcmd rcp-enable command. The router cannot act as a server for either of these protocols unless you explicitly enable the capacity. A local authentication database, which is similar to a UNIX. Each entry that you configure in the authentication database identifies the local user, the remote host, and the remote user.
To permit a remote user of rsh to execute commands in privileged EXEC mode or to permit a remote user of rcp to copy files to the router, specify the enable keyword and level. An entry that you configure in the authentication database differs from an entry in a UNIX. Because the. To provide equivalent support on a router, specify the local username along with the remote host and remote username in each authentication database entry that you configure. For a remote user to be able to execute commands on the router in its capacity as a server, the local username, host address or name, and remote username sent with the remote client request must match values configured in an entry in the local authentication file.
A remote client host should be registered with DNS. If the address sent by the requester is considered invalid, that is, it does not match any address listed with DNS for the host name, then the software will reject the remote-command execution request.
Note that if no DNS servers are configured for the router, then that device cannot authenticate the host in this manner. If DNS services are not available, you must use the no ip domain-lookup command to disable the attempt to gain access to a DNS server by sending a broadcast request. If DNS services are not available and, therefore, you bypass the DNS security check, the software will accept the request to remotely execute a command only if all three values sent with the request match exactly the values configured for an entry in the local authentication file.
The following example allows the remote user named netadmin3 on a remote host with the IP address User netadmin3 is allowed to execute commands in privileged EXEC mode. Configures the Cisco IOS software to allow remote users to copy files to and from the router. Configures the router to allow remote users to execute commands on it using the rsh protocol. To configure the remote username to be used when requesting a remote copy using remote copy protocol rcp , use the ip rcmd remote-username command in global configuration mode.
To remove from the configuration the remote username, use the no form of this command. Name of the remote user on the server. This name is used for rcp copy requests. All files and images to be copied are searched for or written relative to the directory of the remote user's account, if the server has a directory structure, for example, as do UNIX systems. If you do not issue this command, the Cisco IOS software sends the remote username associated with the current tty process, if that name is valid, for rcp copy commands.
For example, if the user is connected to the router through Telnet and the user was authenticated through the username command, then the software sends that username as the remote username. Note The remote username must be associated with an account on the destination server. If the username for the current tty process is not valid, the Cisco IOS software sends the host name as the remote username.
For rcp boot commands, the Cisco IOS software sends the access server host name by default. Note For Cisco, tty lines are commonly used for access services. The concept of tty originated with UNIX.
For UNIX systems, each physical device is represented in the file system. Terminals are called tty devices tty stands for teletype, the original UNIX terminal.
The rcp protocol requires that a client send the remote username on an rcp request to the server. Use this command to specify the remote username to be sent to the server for an rcp copy request.
If the server has a directory structure, as do UNIX systems, all files and images to be copied are searched for or written relative to the directory of the remote user's account. If you are upgrading from Release Changes the default name of the network configuration file from which to load configuration commands. Forwards any frames for stations that the system has learned about dynamically. To configure the router to allow remote users to execute commands on it using remote shell protocol rsh , use the ip rcmd rsh-enable command in global configuration mode.
To disable a router that is enabled for rsh, use the no form of this command. This is valuable when looking at many statistics on many different routers. Use this command to enable the router to receive rsh requests from remote users. In addition to issuing this command, you must create an entry for the remote user in the local authentication database to allow a remote user to execute rsh commands on the router. The no ip rcmd rsh-enable command does not prohibit a local user of the router from executing a command on other routers and UNIX hosts on the network using rsh.
The no form of this command only disables remote access to rsh on the router. To disable a previously configured ip rcmd source-interface command, use the no form of this command. If this command is not used, or if the interface specified in this command is not available not up , the Cisco IOS software uses the address of the interface closest to the destination as the source address. This address is used as the source address as long as the interface is in the up state.
The other benefit of a consistent address is that an access list can be configured on the remote device. The specified interface must have an IP address associated with it. To avoid this, add an IP address to the subinterface or bring the interface to the up state. In the following example, Loopback interface 0 is assigned an IP address of To specify the IP address of an interface as the source address for Telnet connections, use the ip telnet source-interface command in global configuration mode.
To reset the source address to the default for each connection, use the no form of this command. The interface whose address is to be used as the source for Telnet connections. The address of the closest interface to the destination is the source address. Use this command to set the IP address of an interface as the source for all Telnet connections. If the specified interface is not up, the Cisco IOS software selects the address of the interface closest to the destination as the source address.
The following example forces the IP address for Ethernet interface 1 as the source address for Telnet connections :. To use an interface for TFTP booting, use the ip tftp boot-interface command in global configuration mode.
To disable this configuration, use the no form of this command. The type of the interface to be used. You can choose from a list of interfaces. The related interface number. Each interface has a related range of numbers. For example, the Virtual Multipoint Interface has a range of interface numbers from 1 to The following example shows how to ensure that an interface is used for TFTP booting:. To specify the minimum timeout period for retransmission of data using TFTP, use the ip tftp min-timeout command in global configuration mode.
To disable, use the no form of this command. The following example shows how to specify the minimum timeout period for retransmission of data as 5 seconds:. To specify the IP address of an interface as the source address for TFTP connections, use the ip tftp source-interface command in global configuration mode. To return to the default, use the no form of this command. The interface type and number whose address is to be used as the source for TFTP connections. The address of the closest interface to the destination is selected as the source address.
The following example shows how to configure the router to use the IP address associated with loopback interface 0 as the source address for TFTP connections :. To enable the hardware acceleration for WCCP version 1, use the ip wccp web-cache accelerated command in global configuration mode. To disable hardware acceleration, use the no form of this command.
See the "Usage Guidelines" section for additional information. Optional Directs the router to use an access list to control traffic that is redirected to this service group. Optional Directs the router to use an access list to determine which cache engines are allowed to participate in the service group. Optional Specifies a string that directs the router to apply MD5 authentication to messages received from the service group specified by the service name given.
The group-address group-address option requires a multicast address that is used by the router to determine which cache engine should receive redirected messages.
This option instructs the router to use the specified multicast IP address to coalesce the "I See You" responses for the "Here I Am" messages that it has received on this group address.
In addition, the response is sent to the group address. The default is for no group-address to be configured, so that all "Here I Am" messages are responded to with a unicast reply. The redirect-list access-list option instructs the router to use an access list to control the traffic that is redirected to the cache engines of the service group that is specified by the service-name given.
The access-list argument specifies either a number from 1 to 99 to represent a standard or extended access-list number, or a name to represent a named standard or extended access list. The access list itself specifies the traffic that is permitted to be redirected. The default is for no redirect-list to be configured all traffic is redirected. The group-list access-list option instructs the router to use an access list to control the cache engines that are allowed to participate in the specified service group.
The access-list argument specifies either a number from 1 to 99 to represent a standard access-list number, or a name to represent a named standard access list. The access list specifies which cache engines are permitted to participate in the service group. The default is for no group-list to be configured, so that all cache engines may participate in the service group. The password can be up to seven characters. When you designate a password, the messages that are not accepted by the authentication are discarded.
The password name is combined with the HMAC MD5 value to create security for the connection between the router and the cache engine. This example shows how to enable the hardware acceleration for WCCP version Skip to content Skip to search Skip to footer.
Book Contents Book Contents. Introduction A through B C commands D through E F through K L through mode monitor event-trace through Q R through setup show through show fm summary show gsr through show monitor event trace show monitor permit list through show process memory show protocols through showmon slave auto-sync config through terminal-type test cable-diagnostics through xmodem ASCII Character Set and Hexadecimal Values. Find Matches in This Book.
PDF - Complete Book Chapter: F through K. Chapter Contents file prompt file verify auto format fsck full-help help hidekeys history history size hold-character hostname hw-module reset hw-module shutdown insecure international ip bootp server ip finger ip ftp passive ip ftp password ip ftp source-interface ip ftp username ip rarp-server ip rcmd domain-lookup ip rcmd rcp-enable ip rcmd remote-host ip rcmd remote-username ip rcmd rsh-enable ip rcmd source-interface ip telnet source-interface ip tftp boot-interface ip tftp min-timeout ip tftp source-interface ip wccp web-cache accelerated Close.
This is the default. Usage Guidelines Use this command to change the amount of confirmation needed for different file operations. Examples The following example configures confirmation prompting for all file operations: Router config file prompt noisy file verify auto To enable automatic image verification, use the file verify auto command in global configuration mode.
Defaults Image verification is not automatically applied to all images that are copied or reloaded onto a router. Examples The following example shows how to enable automatic image verification: Router config file verify auto Related Commands Command Description copy Copies any file from a source to a destination.
Class B and Class C Flash File Systems format filesystem1 : Class A Flash File System format [ spare spare-number ] filesystem1 : [[ filesystem2 : ][ monlib-filename ]] Syntax Description spare Optional Reserves spare sectors as specified by the spare-number argument when you format flash memory. Usage Guidelines Reserve a certain number of memory sectors as spares, so that if some sectors fail, most of the flash memory card can still be used.
Cisco Series Router Notes The bootflash: , slot0: , sup-slot0: , and sup-bootflash: keywords are supported on Cisco series routers that are configured with a Supervisor Engine 2. Examples The following example shows how to format a flash memory card that is inserted in slot 0: Router format slot0: Running config file on this device, proceed?
This following example shows how to format a CompactFlash PC card that is inserted in slot 0: Router format disk0: Running config file on this device, proceed? This follwing example shows how a format operation cleans up the disk and writes the monitor library on the disk filesystem: Router format formatdisk: Format operation may take a while. Monlib write complete Format: All system sectors written.
Format: Total sectors in formatted partition: Format: Total bytes in formatted partition: Format: Operation completed successfully. Format of bootdisk: complete Related Commands Command Description cd Changes the default directory or file system.
Usage Guidelines Supported Platforms Other than Cisco Series Router This command performs all steps necessary to remove corrupted files and reclaim unused disk space. Cisco Series Router The disk0: or slavedisk0: file systems are the only file systems in the Cisco series routers on which you can run the File-System-Check fsck utility. Table 32 fsck Utility Checks and Actions Checks Actions Checks the boot sector and the partition table and reports the errors.
No action. Checks the number of FAT's field correct values are 1 and 2. Checks the file's cluster chain for loops.
Checks the directories for nonzero size fields. If directories are found with nonzero size fields, the size is reset to zero. Checks for invalid start cluster file numbers. If the start cluster number of a file is invalid, the file is deleted. Checks files for bad or free clusters. Checks to see if two or more files share the same cluster crosslinked.
Checks to see if there are any unused cluster chains. Reclaiming unused space Usage Guidelines The full-help command enables or disables an unprivileged user to see all of the help messages available. Examples In the following example, the show? Defaults No default behavior or values.
Examples In the following example, the help command is used to display a brief description of the help system: Router help Help may be requested at any point in a command by entering a question mark '? If nothing matches, the help list will be empty and you must backup until entering a '?
Two styles of help are provided: 1. Full help is available when you are ready to enter a command argument e. Partial help is provided when an abbreviated argument is entered and you want to know what arguments match the input e. Router co? Router config access-list 99 deny Command Default Password information is displayed. Usage Guidelines Enabling the hidekeys command increases security by preventing password information from being displayed in configuration log files.
Examples The following example shows how to prevent password information from being displayed in configuration log files: Router configure terminal! Router config archive Router config-archive log config Router config-archive-log-config hidekey s Router config-archive-log-config end Related Commands Command Description archive Enters archive configuration mode. Defaults Enabled with ten command lines in the buffer. Examples In the following example, the command history function is disabled on line 4: Router config line 4 Router config-line no history Related Commands Command Description history size Sets the command history buffer size for a particular line.
Usage Guidelines The history size command should be used in conjunction with the history and show history commands. Examples The following example displays line 4 configured with a history buffer size of 35 lines: Router config line 4 Router config-line history size 35 Related Commands Command Description history Enables or disables the command history function. Defaults No hold character is defined.
Examples The following example sets the hold character to Ctrl-S, which is ASCII decimal character Router config line 8 Router config-line hold-character 19 Related Commands Command Description terminal hold-character Sets or changes the hold character for the current session. Command Default The default host name is Router. Usage Guidelines The host name is used in prompts and default configuration filenames.
For example, the full prompt for service profile configuration mode is: config-service-profile However, if you are using the host-name of "Router", you will only see the following prompt on most systems : Router config-service-profil If the hostname is longer, you will see even less of the prompt: Basement-rtr2 config-service Keep this behavior in mind when assigning a name to your system using the hostname global configuration command.
Examples The following example changes the host name to "host1": Router config hostname sandbox host1 config Related Commands Command Description setup Enables you to make major changes to your configurations, for example, adding a protocol suit, making major addressing scheme changes, or configuring newly installed interfaces.
Command Default This command has no default settings. Usage Guidelines The num argument designates the module number. Examples This example shows how to reload a specific module: Router hw-module module 3 reset hw-module shutdown To shut down the module, use the hw-module shutdown command in privileged EXEC mode.
AppDynamics with Cisco Secure Application. Cisco Cloud Email Security. Not vulnerable. Cisco Cloudlock. Cisco Cloudlock for Government. Cisco Cognitive Intelligence. Cisco Crosswork Cloud. Cisco CX Cloud. Cisco Defense Orchestrator.
Cisco DNA Spaces. Cisco Intersight. Cisco IoT Control Center. Cisco IoT Operations Dashboard. Cisco Kinetic for Cities. Cisco Kinetic Gateway Management Module. Under investigation. Cisco Placetel. Cisco PX Cloud. Cisco Secure Application integrated with AppDynamics. Cisco Secure Cloud Insights. Cisco SecureX. Cisco ServiceGrid. Cisco Smart Net Total Care. Cisco Umbrella DNS. Cisco Umbrella SIG. Cisco Webex Calling. Cisco Webex Calling Carrier. Cisco Webex Cloud Registered Endpoints.
Cisco Webex Contact Center. Cisco Webex Contact Center Enterprise. Cisco Webex Control Hub. Cisco Webex Experience Management. Cisco Webex Meetings. Cisco Webex Meetings Slow Channel. Cisco Webex Messaging. Cisco Webex Site Admin webpage.
Duo Security. Duo Security for Government. Updated vulnerable products and products confirmed not vulnerable. Updated the products under investigation, vulnerable products, and products confirmed not vulnerable. Updated the summary, products under investigation, vulnerable products, and products confirmed not vulnerable. Indicated advisory update schedule. Eventually the interface reaches a state of "frame lock asserted" and is unable to transmit traffic from the interface.
Although a replacement program was available in past is now closed. As of approximately 22Feb new products that were manufactured under Engineering Change Order E and Deviation Number D are free of this problem.
Please refer to the "How to Identify Affected Products" section below for instructions on how to view the version and deviation of in-service product. Note : Proactive Replacements fulfilled through the recall process typically take weeks. Normal service level agreements do not apply to replacements obtained using the upgrade form.
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