clogin(1)                                                            clogin(1)



NAME
       clogin - Cisco/Foundry login script

SYNOPSIS
       clogin [-autoenable] [-noenable] [-dSV] [-c  command] [-E  var=x] [-e
       enable-password] [-f  cloginrc-file] [-p  user-password] [-s  script-
       file] [-t  timeout] [-u  username] [-v  vty-password] [-w  enable-
       username] [-x  command-file] [-y  ssh_cypher_type] router [router...]

DESCRIPTION
       clogin is an expect(1) script to automate the process of logging into a
       Cisco router, catalyst switch, Extreme switch, Juniper ERX/E-series,
       Procket Networks, or Redback router.  There are complementary scripts
       for Alteon, Avocent (Cyclades), Bay Networks (nortel), ADC-kentrox EZ-
       T3 mux, Foundry, HP Procurve Switches and Cisco AGMs, Hitachi Routers,
       Juniper Networks, MRV optical switch, Netscreen firewalls, Netscaler,
       Riverstone, Netopia, and Lucent TNT, named alogin, avologin, blogin,
       elogin, flogin, hlogin, htlogin, jlogin, mrvlogin, nlogin, nslogin,
       rivlogin, tlogin, and tntlogin, respectively.

       clogin reads the .cloginrc file for its configuration, then connects
       and logs into each of the routers specified on the command line in the
       order listed.  Command-line options exist to override some of the
       directives found in the .cloginrc configuration file.

       The command-line options are as follows:

       -S     Save the configuration on exit, if the device prompts at logout
              time.  This only has affect when used with -s.

       -V     Prints package name and version strings.

       -c     Command to be run on each router list on the command-line.
              Multiple commands maybe listed by separating them with semi-
              colons (;).  The argument should be quoted to avoid shell
              expansion.

       -d     Enable expect debugging.

       -E     Specifies a variable to pass through to scripts (-s).  For
              example, the command-line option -Efoo=bar will produce a global
              variable by the name Efoo with the initial value "bar".

       -e     Specify a password to be supplied when gaining enable privileges
              on the router(s).  Also see the password directive of the
              .cloginrc file.

       -f     Specifies an alternate configuration file.  The default is
              $HOME/.cloginrc.

       -p     Specifies a password associated with the user specified by the
              -u option, user directive of the .cloginrc file, or the Unix
              username of the user.

       -s     The filename of an expect(1) script which will be sourced after
              the login is successful and is expected to return control to
              clogin, with the connection to the router intact, when it is
              done.  Note that clogin disables log_user of expect(1)when -s is
              used.  Example script(s) can be found in share/rancid/*.exp.

       -t     Alters the timeout interval; the period that clogin waits for an
              individual command to return a prompt or the login process to
              produce a prompt or failure.  The argument is in seconds.

       -u     Specifies the username used when prompted.  The command-line
              option overrides any user directive found in .cloginrc.  The
              default is the current Unix username.

       -v     Specifies a vty password, that which is prompted for upon
              connection to the router.  This overrides the vty password of
              the .cloginrc file's password directive.

       -w     Specifies the username used if prompted when gaining enable
              privileges.  The command-line option overrides any user or
              enauser directives found in .cloginrc.  The default is the
              current Unix username.

       -x     Similar to the -c option; -x specifies a file with commands to
              run on each of the routers.  The commands must not expect
              additional input, such as 'copy rcp startup-config' does.  For
              example:

                 show version
                 show logging

       -y     Specifies the encryption algorithm for use with the ssh(1) -c
              option.  The default encryption type is often not supported.
              See the ssh(1) man page for details.  The default is 3des.

RETURNS
       If the login script fails for any of the devices on the command-line,
       the exit value of the script will be non-zero and the value will be the
       number of failures.

ENVIRONMENT
       clogin recognizes the following environment variables.

       CISCO_USER
              Overrides the user directive found in the .cloginrc file, but
              may be overridden by the -u option.

       CLOGIN clogin will not change the banner on your xterm window if this
              includes the character 'x'.

       CLOGINRC
              Specifies an alternative location for the .cloginrc file, like
              the -f option.

       HOME   Normally set by login(1) to the user's home directory, HOME is
              used by clogin to locate the .cloginrc configuration file.

FILES
       $HOME/.cloginrc   Configuration file.

SEE ALSO
       cloginrc(5), expect(1)

CAVEATS
       clogin expects CatOS devices to have a prompt which includes a '>',
       such as "router> (enable)".  It uses this to determine, for example,
       whether the command to disable the pager is "set length 0" or "term
       length 0".

       The HP Procurve switches that are Foundry OEMs use flogin, not hlogin.

       The Extreme is supported by clogin, but it has no concept of an
       "enabled" privilege level.  You must set autoenable for these devices
       in your .cloginrc.

       The -S option is a recent addition, it may not be supported in all of
       the login scripts or for every target device.

BUGS
       Do not use greater than (>) or pound sign (#) in device banners.  These
       are the normal terminating characters of device prompts and the login
       scripts need to locate the initial prompt.  Afterward, the full prompt
       is collected and makes a more precise match so that the scripts know
       when the device is ready for the next command.

       All these login scripts for separate devices should be rolled into one.
       This goal is exceedingly difficult.

       The HP Procurve switch, Motorola BSR, and Cisco AGM CLIs rely heavily
       upon terminal escape codes for cursor/screen manipulation and assumes a
       vt100 terminal type.  They do not provide a way to set a different
       terminal type or adjust this behavior.  The resulting escape codes make
       automating interaction with these devices very difficult or impossible.
       Thus bin/hpuifilter, which must be found in the user's PATH, is used by
       hlogin to filter these escape sequences.  While this works for rancid's
       collection, there are side effects for interactive logins via hlogin;
       most of which are formatting annoyances that may be remedied by typing
       CTRL-R to reprint the current line.

       WARNING: repeated ssh login failures to HP Procurves cause the switch's
       management interface to lock-up (this includes snmp, ping) and
       sometimes it will crash.  This is with the latest firmware; 5.33 at the
       time of this writing.



                                 5 March 2010                        clogin(1)
