due to other circunstances, we haven't updated the firmware yet (4.1.2), and just yesterday we got the same issue again.
This time I got traces and you got it right, the buffers were depleted:
[ 0] software packet buffer 0 : 1/16384 0x8000000022000680
[ 1] software packet buffer 1 : 1/8192 0x8000000022810700
[ 2] software packet buffer 2 : 1/16384 0x8000000023018780
[ 3] software packet buffer 3 : 1/4096 0x8000000025028800
[ 4] software packet buffer 4 : 1/304 0x800000002d22c880
After a dataplane restart, the SSL-VPN portal started working again.
[ 0] software packet buffer 0 : 16381/16384 0x8000000022000680
[ 1] software packet buffer 1 : 8182/8192 0x8000000022810700
[ 2] software packet buffer 2 : 16384/16384 0x8000000023018780
[ 3] software packet buffer 3 : 4096/4096 0x8000000025028800
[ 4] software packet buffer 4 : 304/304 0x800000002d22c880
I've suggested them to update the software next week, any recommendation on which version to install? guess I will go for the last one, 4.1.6 but I want to be sure that buffer depletion bug is solved in this version, and that we won't encounter new issues (specially SSL-VPN or IPSec related, as we suffered in the past with several 4.x.x versions).
after upgrading to 4.1.6, the problem disappeared for some days, but since yesterday, the portal is very unstable. It doesn't load properly, you have to refresh the browser several times until the login screen appears. After logging in, the client download won't start, or will stop downloading after a few seconds.
Are there any known related bugs with this version? we are going to reboot the unit this afternoon, but is there any command I can use to get more information about the root cause?
You can check the MP resources with 'show system resources follow'. If the MP is heavy into swap that could cause some problems, there are many memory leak fixes included in 4.1.7.
Also you can check to see if any core files exist on the device 'show system files'.
I would recommend generating a tech support file and opening a case with your support team, provide the time frame that the portal was unstable so historical logs can be reviewed from this time.
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