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Cisco Bug: CSCta79313 - Traceback seen when modifying route-map associated with BGPredistributio

Last Modified

Jan 28, 2017

Products (12)

  • Cisco IOS
  • Cisco Catalyst 4500 Series Supervisor Engine V-10GE
  • Cisco Catalyst 4500 Series Supervisor Engine II-Plus-TS
  • Cisco Catalyst 4948 10 Gigabit Ethernet Switch
  • Cisco Catalyst 4948 Switch
  • Cisco ME 4924-10GE Switch
  • Cisco Catalyst 4500 Series Supervisor Engine II-Plus
  • Cisco Catalyst 4000/4500 Supervisor Engine IV
  • Cisco Catalyst 4500 Supervisor Engine 6-E
  • Cisco Catalyst 4000/4500 Supervisor Engine V
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Known Affected Releases

12.2(32.8.18)REC186 12.2(46)SG 12.2SY

Description (partial)

Symptoms: When the router is running EIGRP, there are a lot (hundreds) of
 routes in the routing table and when changes to the prefix-list are applied (it
 does not matter if it is currently used by EIGRP or not) high CPU is observed.
 The process that is causing high CPU is EIGRP-IPv4. Sometimes there can be
 observed a %SYS-3-CPUHOG for EIGRP-IPv4 process.
 Conditions: The issue is hardware independent so can be observed on any router
 with EIGRP prefix lists, and lots of routes in the RIB (routing table).
 Additionally there must be at least one redistribute command on EIGRP as well.
 Please note that problem could also occur without the BGP routing process, but
 the necessary condition is for the device to have many routes in the RIB table
 (BGP has been the logical source for introducing large numbers of routes to the
 routing table).
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Bug Details Include

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