Question: What transport mode is CCP using on both cluster members?
Answer: Run the command cphaprob -a if on all cluster members. Next to
“CCP Mode”, one of the following terms will indicate the current CCP transport mode
for the cluster member:
• multicast – The default mode in most situations; CCP traffic is forwarded by the
local switch only to the other switchports where other ClusterXL members are
attached. Not all switches forward the CCP traffic transmitted in this mode
properly, which can result in interface flaps.
• broadcast – CCP updates are sent to the broadcast MAC address, and are flooded
to all ports in the same VLAN by the switch, slightly reducing overall network
performance.
• unicast – A new mode introduced in R80.20 that can only be employed by 2-
member clusters to avoid the various pitfalls of the multicast & broadcast modes.
Gateway Performance Optimization R81.20 Course
now available at maxpowerfirewalls.com