Slow VPN throughput after update to 5.0.7

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Slow VPN throughput after update to 5.0.7

L1 Bithead

Hello Community

Has anyone recognized some performance issues (extremely slow ip-sec throughput, hanging sessions) after updating to 5.0.7

A Firewall reboot solves this issue, but it's coming up again after some days.

Many thanks



Accepted Solutions

Hello Ianhan,

As Apasupulati explain about the buffer functionality in PAN-OS very well on above post. So, once the buffer will exhaust ( 1/8192     0x80000000bb410700 ), all incoming/outgoing packet will be in queue for a long time to allocate packet buffer for further processing. As a result you will see an unexpected delay / slowness of traffic processing. Every time you will reboot this firewall, the packet buffer counter will reset to normal ( 8134/8192     0x80000000bb410700).

The PAN engineering team has already identified the issue with this version PAN-5.0.7 and fixed in a temp-fix version. For better and longer stability, i would recommend you to upgrade the PAN-OS of this firewall.

Hope this helps.


View solution in original post


L7 Applicator

Hello Hannes,

Could you please apply below mentioned command after every 10 minutes and share the o/p with us.

> debug data-plane pool statistics

> show system statistics session

> show running resource-monitor



We have same performance after update from 5.0.5 so no performance issue.

Check on PA-2050, PA-500 and PA-200

L5 Sessionator

Please run the following commands and show the entire output. The sample out would seem something like below and more.

admin@500> debug dataplane pool statistics

Verify Software pools are not depleted:

Software Pools

[ 0] software packet buffer 0  : 16384/16384    0x8000000021800680

[ 1] software packet buffer 1  : 8192/8192     0x8000000022010700

[ 2] software packet buffer 2  : 8192/8192     0x8000000022818780

[ 3] software packet buffer 3  : 4096/4096     0x8000000023820800

When the issue is happening If by any chance the number is reaching to 1 that would indicate that some buffer is leaking. If this is the case you will need to open a case with Tech support to further investigate the issue.

Hope this helps.


L4 Transporter

Upgraded our 3050 pair 2 weeks ago and have not heard of any issues with VPN yet.  Will keep monitoring now.  Resources appear in good shape.  Thanks!

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