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| author | Anuradha Karuppiah <anuradhak@cumulusnetworks.com> | 2020-07-06 18:01:41 -0700 |
|---|---|---|
| committer | Anuradha Karuppiah <anuradhak@nvidia.com> | 2020-12-21 08:41:15 -0800 |
| commit | c7bfd085680bf94ea5dbdccc875f7e0257a9a9c8 (patch) | |
| tree | 032d74b7239e78e0ba7988d008bc58181fb1b82e /lib/imsg-buffer.c | |
| parent | 362c8f2d739cc21d92b17a64fc8b1a1452aed485 (diff) | |
zebra: advertise stale neighs if EVPN-MH is not enabled
With EVPN-MH, Type-2 routes are also used for MAC-IP syncing between
ES peers so a change was done to only treat REACHABLE local neigh
entries as local-active and advertise them as Type-2 routes i.e. STALE
neigh entries are no longer advertised as Type-2s.
This however exposed some unexpected problems with MLAG where a
secondary reboot followed by a primary reboot left a lot of neighs
in STALE state (on the primary) resulting in them not being
advertised. And remote routed traffic to those hosts being
blackholed in a sym-IRB setup.
This commit is a workaround to fix the regression (it doesn't fix
the underlying problems with entries not becoming REACHABLE; which
maybe a day-1 problem). The workaround is to continue advertising
STALE neighbors if EVPN-MH is not enabled.
Ticket: CM-30303
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
Diffstat (limited to 'lib/imsg-buffer.c')
0 files changed, 0 insertions, 0 deletions