ospfd: Fast OSPF convergence
When considering small networks that have extreme requirements on
availability and thus convergence delay, the timers given in the OSPF RFC
seem a little “conservative”, i.e., the delay between accepted LSAs and the
rate at which LSAs are sent. Cisco introduced two commands 'timers throttle
lsa all’ and 'timers lsa arrival’, which allow operators to tune these
parameters.
I have been writing a patch to also support 'timers lsa arrival’ fully and
‘timers throttle lsa all’ (without the throttling part) also in quagga.
diff --git a/ospfd/ospfd.h b/ospfd/ospfd.h
index 06841b8..c50e615 100644
--- a/ospfd/ospfd.h
+++ b/ospfd/ospfd.h
@@ -147,6 +147,10 @@
#define OSPF_STUB_MAX_METRIC_SUMMARY_COST 0x00ff0000
+ /* LSA timers */
+ unsigned int min_ls_interval; /* minimum delay between LSAs (in msec) */
+ unsigned int min_ls_arrival; /* minimum interarrival time between LSAs (in msec) */
+
/* SPF parameters */
unsigned int spf_delay; /* SPF delay time. */
unsigned int spf_holdtime; /* SPF hold time. */