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Cisco Bug: CSCvt25413 - aggregated addresses are still in the BGP table after delete from the config

Last Modified

Sep 02, 2020

Products (12)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco Network Convergence System 5504
  • Cisco Network Convergence System 55A2-MOD-HD-S
  • Cisco Network Convergence System 5502-SE
  • Cisco Network Convergence System 5516
  • Cisco Network Convergence System 55A1-24H
  • Cisco Network Convergence System 5502
  • Cisco Network Convergence System 55A2-MOD-S
  • Cisco Network Convergence System 55A2-MOD-SE-S
  • Cisco Network Convergence System 5501-SE
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Known Affected Releases

6.1.4.ROUT

Description (partial)

Symptom:
Here are the steps to repro the issue.
 
1. Aggregate is configured in vrf internet.
2. When a more specific route is received in vrf internet, it creates an aggregate route.
3. The aggregate route is leaked to default vrf (GRT).
The aggregate route in default vrf (GRT) source rd Is of vrf internet.
4. Same aggregate (as in vrf internet) is configured in default vrf (GRT)
5. When a more specific route is present in default vrf (GRT) matching the aggregate,
It will overwrite the leaked aggregate route in default vrf (GRT) and change the
source rd from rd of internet to rd of default vrf, also change the source vrf from
vrf internet to vrf default
 
The correct behavior is rather than changing the leaked aggregate route,
It should create a new aggregate and inherit the property of the more specific route.

Conditions:
aggregated route leaking between VRFs
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
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