VMware vSphere SDKs and Tools 6.7

8.0 7.0 6.7 6.5

Command Syntax

The VMware telnet extension defines a telnet proxy option for sending notification of vSphere vMotion events to a virtual serial port proxy. A VMware telnet extension command sequence uses the following general format: 
IAC 
telnet-command
 VMWARE-TELNET-EXT [
ext-command
 [
parameters
] IAC SE]
Where
  • IAC
     is the telnet escape character prefix (Interpret as Command).
  • telnet-command
     is one of the following telnet commands:
    WILL
    ,
    WON’T
    ,
    DO
    ,
    DON’T
    , and
    SB
    .
  • VMWARE-TELNET-EXT
     is the VMware telnet extension command.
  • ext-command
     is a VMware telnet extension command that indicates one of the extension suboption commands. A suboption command sequence begins with the
    VMWARE-TELNET-EXT
     command and is enclosed within
    IAC SB ... IAC SE
     telnet subnegotiation commands.
  • parameters
     indicates one or more parameter values.
  • IAC SE
     is the telnet sequence for completing a subnegotiation command sequence.
The following sections contain tables of VMware telnet extension commands. A table entry shows the command, the corresponding integer code, a description, and the command and code sequences. A code sequence for a VMware telnet extension command has the following characteristics.
  • The code sequence begins with code 255, the telnet escape character prefix IAC (Interpret as Command).
  • VMware telnet extension commands use two- or three-byte code sequences.
  • The
    VMWARE-TELNET-EXT
     command code is 232.
  • Subnegotiation command sequences include begin (
    SB
    ) and end (
    SE
    ) codes (250 and 240).
For example, the
DO-PROXY
 command requires the following code sequence with embedded arguments for direction (“S” for server) and URI: 
IAC SB  VMWARE-TELNET-EXT DO-PROXY direction         uri           IAC SE 
255 250       232           70       "S" "telnet://example.com" 255 240
[R]VM

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