Forum Discussion

Nimbostratus

Jan 18, 2012

LTM Connection to Dual Switches

Hello Everyone, I am hoping that someone can help me understand which connection type is best for F5. We currently have two F5's in an active/failover cluster. In our environment, we are going a...

config

design

mikand_61525

Nimbostratus

Jan 21, 2012

jfrizzell: Thanks

Techgeeeg: No need to be upset when you ask for advice. I have seen others in this forum which successfully uploaded pictures in such way that one wont need to first manually download them in order to see them.

The good thing with diagram2 is that you will utilize LACP which will in total raise total throughput (but verify how the LACP hashing is performed and choose srcip+srcport+dstip+dstport to fully utilize all cables involved in the LACP-group - if you use standard which is just srcmac+dstmac then only one cable will be used between the F5 and each server (for all sessions)).

On the other hand you need to failover if switch1 dies and F5_1 was active for the moment (dies not only at connectivity level but can die from missconfiguration and other stuff aswell).

You seem to have 4 interfaces on your LTM's... is it possible for you to use all 4?

So the setup would be:

LTM01: int0

LACP (towards switch1)

LTM01: int1

LTM01: int2

LACP (towards switch2)

LTM01: int3

LTM02: int0

LACP (towards switch1)

LTM02: int1

LTM02: int2