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An 8000 series distributed router may have traffic loss (dropped packets)
This may occur, after an individual line card, that has a default route advertised via ebgp, is reloaded. The symptoms may be seen with the following counters incrementing at a high rate: CLI output where the statistics are incrementing at a high rate: show controller npu stats traps-all instance all location | include L3_ROUTE_LOOKUP_FAILED show cef drops location all | include "No route drops"
Clear the RIB (router information database) via the following CLI command to re-sync the programming for IPv4/IPv6 routes: clear bgp *
The following CLI statistics output will be increasing at a high rate on the impacted line card using the following command on the line card having the problem: show controller npu stats traps-all instance all location | i L3_ROUTE_LOOKUP_FAILED Example if the slot 0 linecard (0/0/cpu0) is having the problem 8808#show controller npu stats traps-all instance all location 0/0/cpu0 | i L3_ROUTE_LOOKUP_FAILED Mon Aug 16 11:03:54.808 EDT L3_ROUTE_LOOKUP_FAILED 0 110 0x0 365 968 4468545 L3_ROUTE_LOOKUP_FAILED 1 110 0x0 365 330 1492613 8808#show controller npu stats traps-all instance all location 0/0/cpu0 | i L3_ROUTE_LOOKUP_FAILED Mon Aug 16 11:03:54.808 EDT L3_ROUTE_LOOKUP_FAILED 0 110 0x0 365 968 4479545 <-incrementing L3_ROUTE_LOOKUP_FAILED 1 110 0x0 365 330 1509613 <-incrementing RP/0/RP0/CPU0:8808#show cef drops location all | include "No route drops" Mon Aug 16 11:16:41.733 EDT No route drops packets : 6279806 No route drops packets : 675068681 No route drops packets : 413 RP/0/RP0/CPU0:8808#show cef drops location all | include "No route drops" Mon Aug 16 11:16:45.148 EDT No route drops packets : 6279806 No route drops packets : 684225892 <-incrementing No route drops packets : 413
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