Guest

Preview Tool

Cisco Bug: CSCul80242 - "as-set"with aggregate not select lowest Metric for best route

Last Modified

Feb 02, 2017

Products (25)

  • Cisco IOS
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ASR 901-6CZ-FS-D Router
  • Cisco ASR 901-4C-FT-D Router
  • Cisco ASR 901S-4SG-F-D Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901S-2SG-F-D Router
  • Cisco ASR 901S-2SG-F-AH Router
  • Cisco ASR 901-6CZ-FT-A Router
View all products in Bug Search Tool Login Required

Known Affected Releases

15.4(3)S

Description (partial)

Symptom:
If?as-set? configured with aggregate route the MED comparison sequence like as under differences AS (eBGP) for comparison.
The affect is not able to be selected the lowest Metric path for best route.
Add ?bgp always-compare med? configure on same AS (iBGP) will resolve the issue but that should not be necessary and required.

Conditions:
If as-set configured;
"aggregate-address 10.192.0.0 255.255.0.0 as-set summary-only"


(1)	We expected  ?bgp always-compare med?  is not need to be configured for comparison  within same AS (iBGP) 
And, MED able to checked if entry points from the same neighboring AS that followed BGP Best path comparison.

(2)	We expected  ?bgp always-compare med?  is need to be configured for comparison  with difference AS (eBGP) 
Then, MED ready to checked if entry points from the difference neighboring AS that followed BGP Best path comparison.
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.