Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide

Transmit idle allows an SRDF/A session to manage transient link outages without terminating. If transmit idle is not enabled, the SRDF/A session terminates when the link cannot transmit data.

If transmit idle is enabled, a link failure starts the link limbo timer. If the link status is still Not Ready after the link limbo time expires, devices remain Ready to the link with a pair state of TransIdle.

Restrictions

When the SRDF pair is in the Transmit Idle state, only the following operations are allowed from the R1 side:

• rw_enable -r1
• write_disable -r1
• ready -r1
• not_ready -r1
• suspend -immediate

When the SRDF pair is in the Transmit Idle state, only the following operations are allowed from the R2 side:

• suspend -immediate
• failover -immediate

If at the beginning of a control action, all SRDF/A groups are not in the Transmit Idle state, the action fails if one of the groups enters the Transmit Idle state during processing.

Syntax

symrdf -sid SID -rdfg GrpNum [-v] [-symforce]
[-noprompt] [-i Interval] [-c Count]
.............

	set rdfa
		[-transmit_idle {on | off}] 
		[-both_sides]

Example

To enable transmit idle on both sides for SRDF/A group 12:

symrdf -sid 134 -rdfg 12 set rdfa -transmit_idle on -both_sides