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Cisco Bug: CSCus38149 - MFIB leaking share memeory in mfwd_info window

Last Modified

Jul 21, 2018

Products (7)

  • Cisco Carrier Routing System
  • Cisco ASR 9922 Router
  • Cisco IOS XR Software
  • Cisco ASR 9010 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9001 Router
  • Cisco ASR 9912 Router

Known Affected Releases

4.3.2.MCAST 5.1.2.MCAST

Description (partial)

Symptom:
MFIB is leaking share memory in mfwd_info window.

RP/0/RSP0/CPU0:router#show mfib counter shmwin loc 0/1/CPU0 
Thu Jan  1 12:22:40.273 WET
Shmwin Memory Allocation Info : 
[snip]
*  Total shmwin sync free                             : 0
*  Total packet mutex locks                           : 904533
*  Num Shared Memory BVIDB                            : 3299521 <<<<<<<<< leaking here
*  Num Shared Memory BVI INTF                         : 3299520 <<<<<<<<< leaking here
*  Num Shared Memory Interface Head                   : 755
*  Pool Size 168                                      : 1
*  Pool Size 480                                      : 1


RP/0/RSP0/CPU0:router#sh memory 241 location 0/1/cpu0
Thu Jan  1 12:23:04.714 WET

node:      node0_1_CPU0
------------------------------------------------------------------

Physical Memory: 8192M total
 Application Memory : 8005M (3327M available)
 Image: 57M (bootram: 57M)
 Reserved: 128M, IOMem: 0, flashfsys: 0
 Shared window vkg_pbr_ea: 35K
[snip]
 Shared window im_rd: 1M
 Shared window mfwd_info: 862M   <<<<<<<<<< leaking at mfwd_info window
 Shared window inline_svc: 35K
 Shared window im_db_private: 1M
 Shared window infra_statsd: 3K
[snip]

Conditions:
IGMP snooping is enable, but associated BVI interface is not  multicast  enable.
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