On Mon, 25 Jun 2007 15:15:14 +0200
Patrick McHardy [off-list ref] wrote:

OBATA Noboru wrote:

quoted

From: OBATA Noboru <redacted>

Make TCP_RTO_MAX a variable, and allow a user to change it via a
new sysctl entry /proc/sys/net/ipv4/tcp_rto_max.  A user can
then guarantee TCP retransmission to be more controllable, say,
at least once per 10 seconds, by setting it to 10.  This is
quite helpful on failover-capable network devices, such as an
active-backup bonding device.  On such devices, it is desirable
that TCP retransmits a packet shortly after the failover, which
is what I would like to do with this patch.  Please see
Background and Problem below for rationale in detail.

Would it make sense to do this per route?

Both global sysctl and per route would be useful additions.

-- 
Stephen Hemminger [off-list ref]