A small increase in sw.egnh.cfg_discard trap code seen on PTX10003.
pfe> show cda trapstats | refresh 5 | match 249 ---(refreshed at 2024-09-06 14:03:58 PDT)--- 0 249 sw.egnh.cfg_discard 2 0 1 249 sw.egnh.cfg_discard 2 0 3 249 sw.egnh.cfg_discard 2 0 7 249 sw.egnh.cfg_discard 35 0 9 249 sw.egnh.cfg_discard 6 0 14 249 sw.egnh.cfg_discard 78 0 15 249 sw.egnh.cfg_discard 24 0 21 249 sw.egnh.cfg_discard 103 0 22 249 sw.egnh.cfg_discard 31 0 23 249 sw.egnh.cfg_discard 85 0 24 249 sw.egnh.cfg_discard 4 0 ---(refreshed at 2024-09-06 14:04:03 PDT)--- 0 249 sw.egnh.cfg_discard 2 0 1 249 sw.egnh.cfg_discard 2 0 3 249 sw.egnh.cfg_discard 2 0 7 249 sw.egnh.cfg_discard 35 0 9 249 sw.egnh.cfg_discard 6 0 14 249 sw.egnh.cfg_discard 78 0 15 249 sw.egnh.cfg_discard 24 0 21 249 sw.egnh.cfg_discard 103 0 22 249 sw.egnh.cfg_discard 31 0 23 249 sw.egnh.cfg_discard 85 0 24 249 sw.egnh.cfg_discard 4 0 ---(refreshed at 2024-09-06 14:04:08 PDT)---
One of the reasons for a small increase of sw.egnh.cfg_discard trap code seen on PTX10003 can come during the IPv6 NDP declaring the neighbor as unreachable in the IPv6 NDP refresh phase.
This small increase seen every few minutes is because ARPD deleted the unicast nexthop, while BGP still sending control traffic without knowing this event. The Host-injected BGP traffic in transit(between ingress and egress PFE), will land on the deleted next-hop at egress PFE which leads to this drop, sw.egnh.cfg_discard.
---(refreshed at 2024-09-11 10:46:10 PDT)--- xxxx:xxx:13::a501:5447:1 00:00:00:00:00:00 unreachable 3 yes no ae50.0 xxxx:xxx:13::a520:6516:1 00:00:00:00:00:00 unreachable 3 yes no ae50.0 xxxx:xxx:8f::a503:9409:1 00:00:00:00:00:00 unreachable 3 yes no ae24.0 xxxx:xxx:12a::121 00:00:00:00:00:00 unreachable 3 yes no ae15.0 ---(refreshed at 2024-09-11 10:46:11 PDT)--- xxxx:xxx:13::a501:122:1 00:00:00:00:00:00 unreachable 4 yes no ae50.0 xxxx:xxx:13::a501:5447:1 00:00:00:00:00:00 unreachable 1 yes no ae50.0 xxxx:xxx:13::a520:6516:1 00:00:00:00:00:00 unreachable 1 yes no ae50.0 xxxx:xxx:8f::a503:9409:1 00:00:00:00:00:00 unreachable 1 yes no ae24.0 xxxx:xxx:12a::121 00:00:00:00:00:00 unreachable 1 yes no ae15.0 ---(refreshed at 2024-09-11 10:46:13 PDT)--- xxxx:xxx:1::a502:4961:1 00:00:00:00:00:00 unreachable 5 yes no ae9.0 xxxx:xxx:13::a501:122:1 00:00:00:00:00:00 unreachable 3 yes no ae50.0 xxxx:xxx:13::a501:5447:1 00:00:00:00:00:00 unreachable 5 yes no ae50.0 xxxx:xxx:13::a503:4019:1 00:00:00:00:00:00 unreachable 5 yes no ae50.0 xxxx:xxx:13::a504:1887:1 00:00:00:00:00:00 unreachable 5 yes no ae50.0 xxxx:xxx:13::a520:6516:1 00:00:00:00:00:00 unreachable 5 yes no ae50.0 xxxx:xxx:8f::a503:9409:1 00:00:00:00:00:00 unreachable 5 yes no ae24.0 xxxx:xxx:12a::121 00:00:00:00:00:00 unreachable 5 yes no ae15.0 ---(refreshed at 2024-09-11 10:46:15 PDT)--- ... ... ---(refreshed at 2024-09-11 10:46:18 PDT)--- xxxx:xxx:1::a500:8365:1 00:00:00:00:00:00 unreachable 4 yes no ae9.0 <<<<<< xxxx:xxx:1::a501:310:1 00:00:00:00:00:00 unreachable 4 yes no ae9.0 <<<<<< xxxx:xxx:1::a501:2399:1 00:00:00:00:00:00 unreachable 4 yes no ae9.0 <<<<<< xxxx:xxx:1::a502:4961:1 00:00:00:00:00:00 unreachable 0 yes no ae9.0 <<<<<< xxxx:xxx:13::a501:5447:1 00:00:00:00:00:00 unreachable 0 yes no ae50.0 xxxx:xxx:13::a503:4019:1 00:00:00:00:00:00 unreachable 0 yes no ae50.0 <<<<<< xxxx:xxx:13::a504:1887:1 00:00:00:00:00:00 unreachable 0 yes no ae50.0 <<<<<< xxxx:xxx:13::a520:6516:1 00:00:00:00:00:00 unreachable 0 yes no ae50.0 xxxx:xxx:8f::a503:9409:1 00:00:00:00:00:00 unreachable 0 yes no ae24.0 xxxx:xxx:12a::121 00:00:00:00:00:00 unreachable 0 yes no ae15.0 ---(refreshed at 2024-09-11 10:46:19 PDT)--- ---(refreshed at 2024-09-11 10:46:15 PDT)--- 17 249 sw.egnh.cfg_discard 10 0 28 249 sw.egnh.cfg_discard 3 0 ---(*more 100%)--- ---(refreshed at 2024-09-11 10:46:16 PDT)--- 17 249 sw.egnh.cfg_discard 10 0 28 249 sw.egnh.cfg_discard 4 0 ---(*more 100%)--- ---(refreshed at 2024-09-11 10:46:21 PDT)--- 17 249 sw.egnh.cfg_discard 10 0 28 249 sw.egnh.cfg_discard 6 0 ---(*more 100%)---