Cisco Bug: CSCun22070 - DDOS attacks still possible with DRL filters implemented
Jun 29, 2018
- Cisco uBR10000 Series Universal Broadband Routers
Known Affected Releases
Symptom: High CPU in a UBR10K, IP Input process with High CPU utilisation, Routing protocol adjacencies flapping. Conditions: Observed in particular DDoS attack scenarios, even when tightest Divert Rate Limit (DRL) configuration is in place. High CPU is a result of traffic being punted back to the PRE. Affects PRE4 and PRE5.
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Bug Details Include
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