diff options
| author | anuradhak <anuradhak@cumulusnetworks.com> | 2016-11-28 10:12:21 -0800 |
|---|---|---|
| committer | Donald Sharp <sharpd@cumulusnetworks.com> | 2016-12-21 20:26:17 -0500 |
| commit | da72c9fdc34c6d7cc5128886ab898e3cd080ff05 (patch) | |
| tree | f7715b385a9b1435906d26e523402a4153ac2dce /pimd/pim_zebra.h | |
| parent | a770ef906378d2beb027dc48fa2c1062093e9ef8 (diff) | |
pim-nexthop: mroute and pim-upstream rpf are falling out of sync.
Currently the mroute-IIF and upstream RPF-IIF/neigh are resolved separately.
This must change i.e. be merged together for a couple of reasons -
1. In the case of ECMP we will use a load-share mechanism (based on G or
SG) to pick an RPF neighbor in 3.2.1 (to use the load-sharing cap of
anycast-RP). Using a different resolution mechanism for mroute-IIF will
simply not work.
2. In a non-CLOS topology it is actually possible to have routers that
do not participate in PIM. In this case the tree will be set up using
different routers than the ones chosen for the mroute IIF. And traffic
will not be forwarded.
This change is however too big for 3.2.0. So to handle CM-13714 I have
simply forced rpf update on neigh add which fixes the specific problem
seen on link flap in a clos (it is not very efficient but traffic
recovers).
In problem state -
(jessie-30-dev-switch-amd64-sbuild)root@spine-1:/home/cumulus# ip mr
(0.0.0.0, 225.1.1.1) Iif: lo Oifs: swp3 lo
(20.0.11.253, 225.1.1.1) Iif: swp1 Oifs: swp3
(jessie-30-dev-switch-amd64-sbuild)root@spine-1:/home/cumulus# vtysh -c
"show ip pim upstream"
Iif Source Group State Uptime JoinTimer
RSTimer KATimer RefCnt
lo * 225.1.1.1 Joined 00:08:44 00:00:15
--:--:-- --:--:-- 1
swp2 20.0.11.253 225.1.1.1 Joined 00:08:35 00:00:56
--:--:-- 00:02:59 1
(jessie-30-dev-switch-amd64-sbuild)root@spine-1:/home/cumulus#
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>
Diffstat (limited to 'pimd/pim_zebra.h')
| -rw-r--r-- | pimd/pim_zebra.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/pimd/pim_zebra.h b/pimd/pim_zebra.h index ae79ed815a..767cdf0541 100644 --- a/pimd/pim_zebra.h +++ b/pimd/pim_zebra.h @@ -39,4 +39,5 @@ void igmp_source_forward_stop(struct igmp_source *source); void pim_forward_start(struct pim_ifchannel *ch); void pim_forward_stop(struct pim_ifchannel *ch); +void sched_rpf_cache_refresh(void); #endif /* PIM_ZEBRA_H */ |