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Cisco Bug: CSCup01088 - CPUHOG and crash on 'clear dmvpn session' with large NHRP cache

Last Modified

Oct 14, 2019

Products (1)

  • Cisco ASR 1000 Series Aggregation Services Routers

Known Affected Releases


Description (partial)

On an ASR 1000 Series Aggregation Services Router configured with DMVPN, CPUHOG messages may be observed after 'clear dmvpn session' is invoked.

In certain cases, this may lead to a watchdog timeout and an unexpected reboot of the router.

This issue is observed when a router has a very large NHRP table (10-20k entries or more) with a large number (thousands) of child entries per parent entry.
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