High memory usage on PIX 501

Currently running 6.3(5) with the latest version of pdm on my 501, however I dont know if I have a comfort level that running 14m constant memory utilization is making my internet connections run as well as I think it should. Some apps that I use are slow to respond, slow to shut down when pipes are made through this pix. What would I do about figuring out what is using up that much memory as well as, is it possible to run this 501 without pdm installed? would that increase throughput or does that even dictate how connections are established?

An example, using remote desktop to connect to a corporate environment. Before the pix I could disonnect and it was fast. Now with the pix is appears like its slow taking down the pipe established and lags. Overall takes about 30 seconds for the session to truely end.

overall question, can I operate without PDM and if so, would that reduce memory usage? Also, how would you clear that from the flash as I couldnt find anything except for upgrading to newer versions.

PIX Version 6.3(5) interface ethernet0 auto interface ethernet1 100full nameif ethernet0 outside security0 nameif ethernet1 inside security100 hostname firewall domain-name firewall.com clock timezone MST -7 clock summer-time MDT recurring fixup protocol dns maximum-length 512 fixup protocol ftp 21 fixup protocol h323 h225 1720 fixup protocol h323 ras 1718-1719 fixup protocol http 80 fixup protocol rsh 514 fixup protocol rtsp 554 fixup protocol sip 5060 fixup protocol sip udp 5060 fixup protocol skinny 2000 fixup protocol smtp 25 fixup protocol sqlnet 1521 fixup protocol tftp 69 names access-list outside_access_in permit icmp any any echo-reply access-list outside_access_in permit icmp any any echo access-list outside_access_in permit icmp any any traceroute access-list outside_access_in permit icmp any any time-exceeded pager lines 24 icmp permit any echo-reply outside icmp permit any echo outside icmp permit any echo inside icmp permit any echo-reply inside mtu outside 1458 mtu inside 1500 ip address outside dhcp setroute retry 4 ip address inside 10.0.0.1 255.255.255.0 ip audit info action alarm ip audit attack action alarm pdm logging informational 100 pdm history enable arp timeout 14400 global (outside) 1 interface nat (inside) 1 0.0.0.0 0.0.0.0 0 0 access-group outside_access_in in interface outside timeout xlate 0:05:00 timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225

1:00:00 timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00 timeout sip-disconnect 0:02:00 sip-invite 0:03:00 timeout uauth 0:05:00 absolute aaa-server TACACS+ protocol tacacs+ aaa-server TACACS+ max-failed-attempts 3 aaa-server TACACS+ deadtime 10 aaa-server RADIUS protocol radius aaa-server RADIUS max-failed-attempts 3 aaa-server RADIUS deadtime 10 aaa-server LOCAL protocol local aaa authentication ssh console LOCAL http 10.0.0.0 255.255.255.0 inside no snmp-server location no snmp-server contact snmp-server community public no snmp-server enable traps tftp-server inside 10.0.0.110 / floodguard enable telnet 10.0.0.0 255.255.255.0 inside telnet timeout 5 ssh 0.0.0.0 0.0.0.0 outside ssh 10.0.0.0 255.255.255.0 inside ssh timeout 10 console timeout 0 dhcpd address 10.0.0.100-10.0.0.150 inside dhcpd dns X.X.X.X dhcpd lease 18000 dhcpd ping_timeout 750 dhcpd domain firewall.com dhcpd auto_config outside dhcpd enable inside terminal width 80 : end
Reply to
tehlotus
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I am not that familiar with the Pix, more wth routers, but I would be astonished if memory was an issue.

There is no virtual memory system or anything like that, if it does not have enough memory it does not work if it has enough memory it does. End of story.

As long as there are no memory allocation failures it is OK, you do not need ANY free memory at all.

You said: "14m constant memory utilization". IIRC the Pix 501 has 16M of DRAM.

2M if free memory is a LOT. The critical values in the case of a router (and I think that the pix is similar) are the "lowest" and "largest"

This is an 837.

sh mem Head Total(b) Used(b) Free(b) Lowest(b) Largest(b) Processor 81BA60F4 31406860 15770120 15636740 15431392

15132544 I/O 3999C00 6710272 1068540 5641732 5514176 5641156

You can see that the lowesr EVER free memory is only a little less that the current free memory and that the largest block is only a little smaller than the total free. I my pix 501 had largest and lowest greater than 200k after a weeks operation I would be happy-ish.

The 837 has a LOT more free than you pix but the new 837 code has just tipped it over needing 16M less than it has now.

Look elsewhere for your solution, if indeed there is anything to solve.

Reply to
Bod43

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