From f99f1ff50a56c0402a30fd44c3e2451fa1bf6038 Mon Sep 17 00:00:00 2001 From: Sarita Patra Date: Sun, 13 Jun 2021 18:48:35 -0700 Subject: zebra: Fix for route node having no tracking NHT Topology: IXIA-----(ens192)FRR(ens224)------iXIA Configuration: 1. Create 8 sub-interfaces on ens192 under Default VRF and configure 8 EBGP session between FRR and IXIA. 2. Create 1000 sub-interfaces on ens224 under Default VRF and configure 1000 EBGP session between FRR and IXIA. 3. 2M prefixes distributed from Left side Ixia each with 8 ECMP path. 4. So in total, there are 2M prefixes * 8 ECMP = 16M prefixes entries in RIB and FIB. Issue: Shut ens192 and ens224, this is taking 1hr 15 mins to clean up the routes. Root Cause: In the case of route deletion, if the particular route node is having nht count = 0, we are going to the parent and doing nht evaluation, which is not needed. Fix: If the deleted the route node is having nht count > 0, then do a nht evaluation on the parent node. Shut ens192 and ens224, it is taking 1 min to clean up the routes with the fix. Signed-off-by: Sarita Patra --- zebra/rib.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'zebra/rib.h') diff --git a/zebra/rib.h b/zebra/rib.h index fa8193bed..b7416322f 100644 --- a/zebra/rib.h +++ b/zebra/rib.h @@ -490,7 +490,8 @@ extern struct route_table *rib_tables_iter_next(rib_tables_iter_t *iter); extern uint8_t route_distance(int type); -extern void zebra_rib_evaluate_rn_nexthops(struct route_node *rn, uint32_t seq); +extern void zebra_rib_evaluate_rn_nexthops(struct route_node *rn, uint32_t seq, + bool rt_delete); /* * Inline functions. -- cgit v1.2.3