Forum Discussion
NimbostratusHelp with capturing the traffic between a virtual server and its pool members
HI, I would like to know how to run a tcp dump to capture the traffic from my virtual server to its pool members. Heres an example
user: 10.20.20.20 vip address(virtual server): 10.10.10.5 real server address 10.30.30.10, 10.30.30.11, 10.30.30.12 self ip configured : 10.30.30.5 (local self ip only) 10.30.30.6(floating self ip)
Also would like to know how to check whether F5 is load balancing to its pool or not using F5 and also I would like to check how its load balacning.
Please help me with this issue. I am stuck at this. I dont know which would be the src host and which ip addresses from aboive would be dest host if I run this command tcpdump -so -ni 0.0 host ip add dest add.
I want to know how can we say whether F5 is load balacning to its pool or not using tcpdump.
Thnaks, Naresh
3 Replies
- Matt_Dierick
Employee
There are several possibilities.
With tcpdump : tcpdump -nni 0.0:nnn -s0 host 10.30.30.10 or 10.30.30.11 or 10.30.30.12
This command will log all exchanges between F5 and servers (source or destination). You can add the client ip address if you want to see the requests and responses on the client side.
To write the trace on file : -w file.pcap
Regarding the load balancing method, you can use Statistics in GUI. Go to Statistics > Local Traffic > Pool. You will be able to see the traffic load in the pool.
HamishCirrocumulus
The other way is with an analytics profile that incldues traffic capturing. You can specify things like particular HTTP response codes to capture, client IP's, URI's etc.
H
What_Lies_Bene1Cirrostratus
FYI, if you want to understand more about tcpdump take a look at this series of four articles (err, by me) starting here: http://packetpushers.net/masterclass-tcpdump-basics/.
