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SET LINK
Remote node autoisolation may be enabled (at the isolator) where it applies to all
links using SET NODE/AUTOISOLATE, or for specific links only with the SET
LINK/AUTOISOLATE command. An isolated node (isolatee) remains isolated
until you carry out both of the following actions:
• Enable the link to the isolated node on all nodes that have isolated it, that is
set link [isolated-node]/enable
• Exit the isolated state on the isolated node, that is
set node/noisolate
Autoisolation is disabled (at the isolator) using the /NOAUTOISOLATE qualifier.
/CHECKSUM
/NOCHECKSUM (D)
/CHECKSUM
specifies that checksum calculations for data packets over network
links are performed. This qualifier is by default set to /NOCHECKSUM.
This command is useful for diagnosing errors over network links. To see the
checksum state, use the SHOW LINK/STATE command.
/ENABLE
/DISABLE
/ENABLE
specifies that connect attempts are honoured from the node specified by
link-name
.
This command is used to enable a link which is in a disabled state. A link can
be disabled either as a result of operator action, or automatically if it has been
suspected of causing severe congestion. If a link is automatically disabled, an
entry is made in the RTR error log.
/DISABLE
specifies that connect attempts are no longer honoured from the node
link-name
. Note that disabling the link does not have any immediate effect on an
established link. It only takes effect when new connection attempts are made.
/CLUSTER
/NOCLUSTER (D)
Specifies that the command is executed on all the nodes in the cluster.
If neither
/NODE
nor
/CLUSTER
is specified then the command is executed on the
nodes specified by the latest
SET ENVIRONMENT
command. If no
SET ENVIRONMENT
command has been entered then the command is executed only on the node where
the command was issued.
Note: In environments that do not support clustering, use of the /CLUSTER
qualifier will cause the relevant command to be executed on the local node only.
/INACTIVITY_TIMEOUT[=secs]
/INACTIVITY_TIMEOUT=node-default
/INACTIVITY_TIMEOUT[=secs]
specifies the maximum elapsed time in seconds
before RTR discards a link that is neither receiving traffic nor responding
to explicit link state queries. Link failover occurs between the adjustable
environmental timer parameters
RTR_TIMEOUT_CONNECT
, default of 60 seconds,
and
RTR_TIMEOUT_CONNECT_RELAX
, default of 90 seconds, on a network link or
remote node. When there is a failure RTR detects it within the timer parameters
stipulated and disconnects and retries the link according to the router preferences
for a frontend. If a router fails to respond to the reconnect tries there will be a
time lapse of
RTR_TIMEOUT_CONNECT
plus
RTR_TIMEOUT_CONNECT_RELAX
for the link
failover to occur.
RTR Command Line Interface 6–113