Lantronix SLC16, Руководство пользователя

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8: Device Ports
SLC™ Console Manager User Guide 108
escape sequence assigned to the currently logged in user. If the endpoint is
telnet
or
SSH
, logging out returns the user to the command line prompt.
Note: To escape from the
connect listen
command, press any key.
Setting up a user with an escape sequence is optional. For any NIS, LDAP, RADIUS,
Kerberos, or user, or any local user who does not have an escape sequence
defined, the default escape sequence is Esc+A.
Device Ports - Logging
The SLC products support port buffering of the data on the system's device ports as well as
notification of receiving data on a device port. Port logging is disabled by default. You can enable
more than one type of logging (local, NFS file, email/SNMP, or USB port) at a time. The buffer
containing device port data is cleared when any type of logging is enabled.
Local Logging
If local logging is enabled, each device port stores 256 Kbytes (approximately 400 screens) of I/O
data in a true FIFO buffer. You may view this data (in ASCII format) at the CLI with the
show
locallog
command or on the Devices > Device Ports - Logging page. Buffered data is normally
stored in RAM and is lost in the event of a power failure if it is not logged using an NFS mount
solution. If the buffer data overflows the buffer capacity, only the oldest data is lost, and only in the
amount of overrun (not in large blocks of memory).
NFS File Logging
Data can be logged to a file on a remote NFS server. Data logged locally to the SLC is limited to
256 Kbytes and may be lost in the event of a power loss. Data logged to a file on an NFS server
does not have these limitations. The system administrator can define the directory for saving
logged data on a port-by-port basis and configure file size and number of files per port.
The directory path must be the local directory for one of the NFS mounts. For each logging file,
once the file size reaches the maximum, a new file opens for logging. Once the number of files
reaches the maximum, the oldest file is overwritten. The file naming convention is: <Device Port
Number>_<Device Port Name>_<File number>.log.
Examples:
02_Port-2_1.log
02_Port-2_2.log
02_Port-2_3.log
02_Port-2_4.log
02_Port-2_5.log
USB Flash Drive Logging
Data can be logged to a USB flash drive that is loaded into the USB port on the front of the SLC
unit (see
USB Port on page 148 ). Data logged locally to the SLC device is limited to 256 Kbytes
and may be lost in the event of a power loss. Data logged to a USB flash drive does not have
these limitations. The system administrator can define the file size and number of files per port.
For each logging file, once the file size reaches the maximum, a new file opens for logging. Once
the number of files reaches the maximum, the oldest file is overwritten. The file naming convention
is:
<Device Port Number>_<Device Port Name>_<File number>.log
.