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ASA5520 running on 8.0(5) facing high memory utilization 100%

Hi Guys ,

ASA5520 configured A/A in context mode , running on 8.0(5) facing high memory utilization 100%.

can anyone suggest the issue and how to reduce high memory utilization .no debug enabled on firewall .there are multiple ACL/Objects configured on firewall .


Cisco Adaptive Security Appliance Software Version 8.0(5) <system>
Device Manager Version 6.2(5)

Compiled on Mon 02-Nov-09 21:22 by builders
System image file is "disk0:/asa805-k8.bin"
Config file at boot was "startup-config"

fw up 4 hours 30 mins
failover cluster up 2 years 56 days

Hardware:   ASA5520, 512 MB RAM, CPU Pentium 4 Celeron 2000 MHz
Internal ATA Compact Flash, 64MB
BIOS Flash M50FW080 @ 0xffe00000, 1024KB

------------------ show module ------------------

Mod Card Type                                    Model              Serial No.
--- -------------------------------------------- ------------------ -----------
  0 ASA 5520 Adaptive Security Appliance         ASA5520            JMX1
  1 ASA 5500 Series Security Services Module-20  ASA-SSM-20         JAF10

------------------ show memory ------------------

Free memory:          422504 bytes ( 0%)
Used memory:       536448408 bytes (100%)
-------------     ----------------
Total memory:      536870912 bytes (100%)

------------------ show memory dma ------------------

<--- More --->
DMA memory:
   Unused memory:                 22884448 bytes (29%)
   Crypto reserved memory:        20471932 bytes (26%)
      Crypto free:                19292168 bytes (24%)
      Crypto used:                 1179764 bytes ( 1%)
   Block reserved memory:         35633472 bytes (45%)
      Block free:                 31818208 bytes (40%)
      Block used:                  3815264 bytes ( 5%)
   Used memory:                     251364 bytes ( 0%)
-----------------------------   ----------------
   Total memory:                  79241216 bytes (100%)

------------------ show conn count ------------------

9780 in use, 18342 most used

------------------ show xlate count ------------------

216 in use, 1022 most used



  • Firewalling
Cisco Employee

Re: ASA5520 running on 8.0(5) facing high memory utilization 100

firstly i think this can be better addressed if you open a TAC case simply bcoz of the complexity involved in troubleshooting this

though i can try to help you a little bit here

issue this command show local-host | include host|count/limit       

and see if you have any host/server making more connections than expected

other than that try disbaling logging, snmp and threat detection and see if the memory goes down a little bit

if possible paste your config

Cisco Employee

Re: ASA5520 running on 8.0(5) facing high memory utilization 100

You can decrease the logging buffer-size, you can also disable threat detection.

I hope it helps.


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