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IP BGP table double in size

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TitleIP BGP table double in size
Symptoms
  • IP BGP table double in size
  • CAM IP partition warning messages appear in syslogs:
Apr 15 16:17:34:A:CAM IP partition warning: total 786432 (reserved 0), free 38002, slot 1, ppcr 1
Apr 15 16:17:10:A:CAM IP partition warning: total 786432 (reserved 0), free 37920, slot 2, ppcr 1
Environment
  • MLXe
  • NetIron OS 6.0.00e code
  • A mix of -X and -X2 line cards are installed in the same chassis:
SL M1: BR-MLX-MR2-X
SL 1: BR-MLX-10Gx20-X2
SL 2: BR-MLX-1GCx24-X
  • multi-service-4 CAM partition profile is configured
  • need to support 1M to 2M routes
Cause
Approaching maximum limit of available IP CAM entries for multi-service-4 CAM partition profile:

show cam-partition usage displays the following output:

CAM partitioning profile: multi-service-4

Slot 1 XPP100GEXB 0:
            [IP] 786432(size),   38078(free), 095.15%(used)

Slot 1 XPP100GEXB 1:
            [IP] 786432(size),   37595(free), 095.21%(used)

Slot 2 XPP20SP 0:
            [IP] 786432(size),   37995(free), 095.16%(used)
Resolution
1. Remove -X line cards from the chassis
2. Enable algorithmic mode for -X2 line cards:
 
cam-mode amod <slot number>
 
3. Save the configuration:
 
wr mem
 
4. Reload the line card:
 
power-off lp <slot number>
power-on lp <slot number>
Additional notes

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