"concurrent max" for keepalives?

Unanswered Question
Jul 18th, 2007

Hi, looking at the docs related to keepalives on the css-11506 I noticed there is a "css max" and a "Concurrent MAX". Can someone tell me what the concurrent max means? The numbers are pretty low for that. Here is the chart I was referring to:

Keepalive Class, Types, and Limitations

Class Type CSS MAX Concurrent MAX

----- ---- ------- --------------

A (The CSS limits ICMP 2048 2048

2048 keepalives per HTTP-HEAD- 2048 2048

Class A.) non-persistent

Encrypted 256 256



SSL (Hello) 2048 2048

TCP 2048 2048

B (The CSS limits FTP 256 32

512 keepalives per HTTP-GET 256 32

Class B.) persistent and


HTTP-HEAD 256 32


Encrypted HTTP- 256 32

GET persistent

or non-persistent

Encrypted HTTP- 256 32

HEAD persistent

Script 256 16

I'm wondering about the concurrent max for class B keepalives in particular. I have close to 190 of these types of keepalives in use on my css at the moment.



I have this problem too.
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Syed Iftekhar Ahmed Wed, 07/18/2007 - 10:34

The CSS divides the keepalive types into two categories, Class A and Class B keepalives. The CSS supports a maximum of 2048 Class A

keepalives. The CSS supports a maximum of 512 Class B keepalives.

The concurrent maximum is referring to the maximum number of each keepalive type that can execute concurrently.

Syed Iftekhar Ahmed

bjelf Wed, 07/18/2007 - 10:50

Ok thanks. I general do a 60 sec keepalive frequency so sounds like I will not have a problem.


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