HP ProLiant BL660c ISS Technology Update, Volume 8, Number 2 - Page 6

Quick tip: Customizing the iLO Text Console

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ISS Technology Update Volume 8, Number 2 Quick tip: Customizing the iLO Text Console The iLO Text Console (TEXCONS) feature was introduced with iLO 2 version 1.70 and marks the return of a text remote console session that can be accessed from Telnet or Secure Shell (SSH). iLO 2 also supports using Telnet to connect to the Text Remote Console. However, the data stream is not encrypted when using a normal Telnet connection. When using SSH, the data stream, including authentication credentials, is protected by the encryption method supported by the SSH client and iLO 2. HP recommends using SSH to connect to the iLO Text Console. As part of the default security policy, using Telnet is disabled. Administrators must enable Telnet to allow access to the CLI, and Text Remote Console. For more information about the security of the communication methods used by iLO 2, see the Integrated Lights-Out Security technology brief at http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00212796/c00212796.pdf Customization Implementing the TEXCONS feature allows for configurability. In general these options do not need to be changed but may be useful in some situations. When starting TEXCONS, options and arguments can follow the command line interface (CLI) command ‗textcons' in order to customize the operation of the display. Controlling Rate of Sampling The speed option can be used followed by an argument indicating the number of milliseconds between sampling periods where the iLO firmware examines screen changes. This can alleviate unnecessary traffic on long / slow network links, or simply reduce the bandwidth used and the time consumed by the iLO management processor CPU. Reasonable values are between 1 and 5000 (1ms to 5 seconds). >textcons speed 500 Controlling Smoothing The iLO processor attempts to transmit data only when it has changed on the screen and has then become stable. If a line of text is changing more quickly than iLO can sample it, the line will not be transmitted until it has become stable. As an example, during an ‗ls -R' of a large file-system, the physical monitor will display text more rapidly than it can be interpreted. In the Software Text Remote Console case the same is true. The data will be displayed rapidly, and is essentially indecipherable. In this case, however, the data is being transmitted by iLO across the network - consuming bandwidth. The default behavior is the smoothing as defined above. The smoothing feature can be disabled with the delay option and an argument of 10. >textcons speed 500 delay 10 Controlling Foreign Language Keyboard Support While performing TEXCONS, the iLO 2 processor, can perform the necessary character mapping between the client, telnet, and the server. The default mapping is the USB 101-keyboard translation (or no translation). The other keyboard support translation modes are listed below. 6

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ISS Technology Update
Volume 8, Number 2
6
Quick tip: Customizing the iLO Text Console
The iLO Text Console (TEXCONS) feature was introduced with iLO 2 version 1.70 and marks the return of a text remote console
session that can be accessed from Telnet or Secure Shell (SSH). iLO 2 also supports using Telnet to connect to the Text Remote
Console. However, the data stream is not encrypted when using a normal Telnet connection. When using SSH, the data stream,
including authentication credentials, is protected by the encryption method supported by the SSH client and iLO 2. HP
recommends using SSH to connect to the iLO Text Console. As part of the default security policy, using Telnet is disabled.
Administrators must enable Telnet to allow access to the CLI, and Text Remote Console.
For more information about the security of the communication methods used by iLO 2, see the Integrated Lights-Out Security
technology brief at
Customization
Implementing the TEXCONS feature allows for configurability.
In general these options do not need to be changed but may be
useful in some situations.
When starting TEXCONS, options and arguments can follow the command line interface (CLI) command
‗
textcons
‘
in order to
customize the operation of the display.
Controlling Rate of Sampling
The speed option can be used followed by an argument indicating the number of milliseconds between sampling periods where
the iLO firmware examines screen changes.
This can alleviate unnecessary traffic on long / slow network links, or simply
reduce the bandwidth used and the time consumed by the iLO management processor CPU.
Reasonable values are between 1
and 5000 (1ms to 5 seconds).
>textcons speed 500
Controlling Smoothing
The iLO processor attempts to transmit data only when it has changed on the screen and has then become stable.
If a line of
text is changing more quickly than iLO can sample it, the line will not be transmitted until it has become stable.
As an example,
during an ‗ls –R‘ of a large file
-system, the physical monitor will display text more rapidly than it can be interpreted.
In the
Software Text Remote Console case the same is true.
The data will be displayed rapidly, and is essentially indecipherable.
In
this case, however, the data is being transmitted by iLO across the network
–
consuming bandwidth.
The default behavior is
the smoothing as defined above.
The smoothing feature can be disabled with the delay option and an argument of 10.
>textcons speed 500 delay 10
Controlling Foreign Language Keyboard Support
While performing TEXCONS, the iLO 2 processor, can perform the necessary character mapping between the client, telnet,
and the server.
The default mapping is the USB 101-keyboard translation (or no translation).
The other keyboard support
translation modes are listed below.