Forum Discussion
Torsten_93742
Nimbostratus
NimbostratusSNAT statistics and iRule for selecting SNAT IP
Hi,
I am trying to setup Exchange 2010 via the BigIP utilizing a SNAT pool.
Following the iApp from [1] and the deployment guide linked there [2] I am using the following iRule to ensure SNAT addre...
Is this a bug or expected behaviour?
i understand it is expected because you manually specify snat address.
If expected, can I somehow update the statistics from within this iRule somehow?
you may try istats.
Introduction to iStats Part 1: Overview by Colin Walker
https://devcentral.f5.com/articles/introduction-to-istats-part-1-overview.UrlpWm2jYdU
nitass_89166
Noctilucent
NoctilucentIs this a bug or expected behaviour?
i understand it is expected because you manually specify snat address.
If expected, can I somehow update the statistics from within this iRule somehow?
you may try istats.
Introduction to iStats Part 1: Overview by Colin Walker
https://devcentral.f5.com/articles/introduction-to-istats-part-1-overview.UrlpWm2jYdU
Torsten_93742Thanks this looks promising, I will try to get write some irule to gather istats about snat selection. As soon as it is finished I'll post it here.- Torsten_93742Just for the sake of completeness: Finally I did not use istats because we have splunk in place here and for this to work I did add the following line to the iRule to log: log local0. "EXCHANGE_2010_SNATPOOL snat_ip=[lindex $static::snpool [eval {expr $packed_address % [llength $static::snpool] }]]" Then in Splunk I use the following search string to create a graph for the distribution of the connections per SNAT IP: index=f5 EXCHANGE_2010_SNATPOOL NOT lindex | timechart count by snat_ip Alternatively this can be used if you need a percentage: index=f5 EXCHANGE_2010_SNATPOOL NOT lindex | top snat_ip
