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setSplbMode
1-397
Telnet Commands
setSplbMode
Enable or disable two port loopback.
Syntax
setSplbMode [mode | -show]
Availability Admin
Description Use this command to enable or disable SPLB mode. The mode is
saved in flash memory and stays in that mode until the next
execution of
setSplbMode. The mode becomes active as soon as this
command is executed. It does not require a reboot to take effect.
When enabled, the SPLB mode forces the
spinSilk command to
disable two-port loopback for M-to-M connected ports. This may be
useful to isolate internal switch problems from GBIC problems since
the internal paths are used much less with SPLB mode enabled.
When disabled, the SPLB mode forces the
spinSilk command to
circulate frames between pairs of M-to-M connected ports as follows:
P1 TX >>> P1 RX -> P2 TX >>> P2 RX -> P1 TX
where:
>>> is a cable or internal loopback
-> is a routing table entry
The connections between pairs of M-to-M ports will be chosen to
exercise the connections between as many chips (or bloom quadrants)
as possible subject to the setting of allow_intra_chip and the
availability of pairs of M-to-M ports.
Any ports that are cross-cabled will be routed to each other in the
normal manner regardless of the setting of SPLB mode:
P1 TX >>> P2 RX -> P1 TX
P2 TX >>> P1 RX -> P2 TX
Operand This command has the following operands:
mode
Specify 1 to enable SPLB mode or 0 to disable
SPLB mode. The default (if no operand specified)
is SPLB disabled. This operand is optional.
-show
Specify to display the current setting. This
operand is optional.