BITS Port Configuration
Mode Commands
The Building
Integrated Timing Supply (BITS) port configuration mode provides
the commands to configure the BITS ports on the SPIO and optionally
to configure the transmit timing source.
IMPORTANT:
The commands or keywords/variables
that are available are dependent on platform type, product version,
and installed license(s).
default
Restores the port’s
default speed and communication mode.
Privilege:
Security Administrator,
Administrator
Syntax
default { mode | preferred
slot }
mode
Default: none
Sets the default for
the ports framing mode.
preferred slot
Default: non-revertive
Sets the port for non-revertive
operation for port redundancy auto-recovery; requiring an administrative
user to manually issue a port switch command to return service to
the original port.
Usage:
Restores port-level
parameters to their default values.
Example:
Use the following command
to remove any setting for this port’s framing mode:
default mode
description
Defines descriptive
text that provides useful information about the port.
Privilege:
Security Administrator,
Administrator
Syntax
description text no description
no
Erases the port’s
description from the configuration file.
text
text must
be a string of 1 to 79 alphanumeric characters with no spaces or
a string within double quotes that includes printable characters.
The description is case-sensitive.
Usage:
Set the description
to provide helpful information, for example the port’s
primary function, services, end users. Define any information, the
only limit is the number of characters.
Example:
Use the following command
to set a sample port description in the configuration file:
description samplePortDescriptiveText
Use the following command
to set a more readable description:
description “This is a sample description”
end
Exits the BITS port
configuration mode and returns to the Exec mode.
Privilege:
Security Administrator,
Administrator
Usage:
Change the mode back
to the Exec mode.
exit
Exits the BITS port
configuration mode and returns to the Global configuration mode.
Privilege:
Security Administrator,
Administrator
Usage:
Return to the Global
configuration mode.
mode
Configures the framing
mode for the port.
Privilege:
Security Administrator,
Administrator
Syntax
mode { e1 | t1 } framing
type
e1 | t1
e1 selects
the SDH E1 framing mode.
t1 selects
the SONET T1 framing mode.
framing type
basic: Selects
the Frame Alignment Signal (FAS) used with E1.
crcmf: Selects
the Multiframe with CRC (FAS+CRC) used with E1.
esf: Selects
the extended superframe format used with T1.
sf: Selects
the superframe format (D4) used with T1.
Usage:
Set the ports framing
mode parameters.
Example:
Configure the port
to support E1 with crcmf framing.
mode e1 framing crcmf
preferred slot
Identifies which card
in a chassis should assume revertive (redundancy auto-recovery)
functionality should the slot/port being configured go
down. There are only two SPIO, one in slot 24 and the other in slot
25.
Privilege:
Security Administrator,
Administrator
Syntax
preferred slot slot#[ default | no ] preferred slot
default
Default: non-revertive
operation.
no
Disables revertive,
or auto-recovery, operation for the port.
slot#
Identifies the physical
slot in the chassis where the SPIO is installed.
Usage:
This command enables
or disables revertive port redundancy. So after a port failover, when
the original port is restored to service (i.e. link up) the system
will return service to that port automatically.
Disabled, which is
the default setting, causes non-revertive operation; requiring an administrative
user to manually issue a port switch to command
to return service to the original port.
Example:
Use this command to
set the ports on the card in slot 25 as “preferred” for
port redundancy:
preferred slot 25
recover
Configure line-timing
so the SPIO recovers the transmit timing source from an external
source via one of the line cards in the chassis. The recovered clock
is then distributed for use to all line cards in the chassis.
Privilege:
Security Administrator,
Administrator
Syntax
recover { line1 slot# | line2 slot # }no recover { line1 | line2 }
no
Deletes the identified
line-timing source definition from the configuration.
line1 slot#
Sets first priority
for line-timing clock recovered from the line card in the specified slot.
slot#: a
number between 1 and 48.
line2 slot#
Sets second priority
for line-timing clock recovered from the line card in the specified slot.
slot#: a
number between 1 and 48. Can not be the same slot number entered
for line1.
Usage:
Define which line-timing
source has priority.
Example:
Configure the line
card in slot 19 as the preferred source for line-timing.
recover line1 19
shutdown
Terminates all processes
supporting the port or blocks the shutting down of the port. Conversely,
this command with the no keyword
enables the port and BITS -timing as a transmit timing source.
Privilege:
Security Administrator,
Administrator
no
Enables the port’s
administrative state. When omitted the card is shutdown (removed
from service).
Usage:
Shut down a port prior
to re-cabling and/or other maintenance activities.
This command with the no keyword
is required to bring a port into service.
Example:
Use the following command
to enable the port for service:
no shutdown
snmp trap link-status
Enables/disables
the generation and sending of an SNMP (notification) trap when the
port experiences a change of state (up or down).
Privilege:
Security Administrator,
Administrator
Syntax
[ no ] snmp
trap link-status
no
Disables the sending
of traps for link-status changes.
Usage:
Enable the sending
of link-status change traps if there is a monitoring facility that
can use the information or if there are troubleshooting activities
in progress.
Example:
Use this command to
enable sending of link-status SNMP traps:
snmp trap link-status
Use this command to
disable sending of link-status SNMP traps:
no snmp trap link-status
