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Craig_05_144607's avatar
Craig_05_144607
Icon for Nimbostratus rankNimbostratus
Feb 18, 2014

Destination Unreachable "reduce MTU size" message not passing back through F5 LTM for MS Exchange traffic

MS Exchange mail traffic from our F5 LTM is reaching a tunnel which is requiring the Exchange Servers to adjust the MTU. An ICMP message "Destination Unreachable" which contains the reduce MTU messag...
application delivery
devops
iRules
LTM
Craig_05_144607's avatar
Craig_05_144607
Icon for Nimbostratus rankNimbostratus
Feb 18, 2014

Thank you for your reply. I'm new to the F5 LTM. Only mail to a single office is going through this specific tunnel. Would I be required to create a separate Vlan for all exchange traffic to and from this site and connecting to a new VIP with the same pool of exchange servers?