Symptom
Locally sourced / injected traffic (e.g. ping, traceroute) are dropped. Switched/forwarded traffic to the same destination is not impacted.
On 2nd/3rd generation line cards (aka Typhoon/Tomahawk) on ASR9K the drop counter, RSV_DROP_IPV4_TXADJ_NO_MATCH is incremented. But the problem can happen on 4th/5th generation line cards (aka Lightspeed/Lightspeed Plus) also.
RP/0/RSP0/CPU0:router#show drops np np1 location 0/0/CPU0
Node: 0/0/CPU0:
----------------------------------------------------------------
NP 1 Drops:
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RSV_DROP_IPV4_TXADJ_NO_MATCH 172619 <<<<<<<< HERE
Conditions
The problem will happen if the destination is reachable over more than 1 level of recursive route (e.g. destination is known via static route and next-hop is known via BGP/other) and the 1st or the 2nd level recursive route has multiple equal cost paths (ie number of ECMP path is greater than 1 for 1st or 2nd level recursive route).
Workaround
Use one or both of the following to avoid the issue:
1. Do not use more than 1 level of recursive route.
2. The number of ECMP path is 1 for both 1st and 2nd level recursive route.
Further Problem Description
