Cisco Bug: CSCvv17560 - BMP BGP server can lead to CPUHOG and crashes
Oct 04, 2020
- Cisco ASR 1000 Series Aggregation Services Routers
Known Affected Releases
Symptom: Crash preceded by notifications such as: BGP-3-BMP_MEMORY: BMP Memory Utilization currently at X, exceeds threshold Y SYS-3-CPUHOG: Task is running for (Z)msecs, more than (2000)msecs (5/5),process = iosp_vty_100001_dmi_syncfd_fd_172. memcmp, mdlist_insert_sorted, bgp_bmp_init_bgp_neighbor, bgp_bmp_neighbor_monitoring_activate, bgp_session_parse, bgp_neighbor_parse, bgp_neighbor, neighbor_command, parse_cmd_internal, parse_cmd, ios_portal_vty_run_cmd, iosp_vty_proc where X and Y correspond to utilization and threshold in bytes, and Z is the number of milliseconds. Conditions: Slow response by BMP server. BGP BMP message transmission is getting backlogged due to TCP not able to transmit at the rate BGP BMP messages are generated. A typical example is a case of high BMP memory utilization and another BGP BMP neighbor being configured while the router is in this state.
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Bug Details Include
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