problem joining slave node to master node after VCS upgrade

if problem in mismatching of volboot file

# cat volboot
# vxdctl stop
# mv /etc/vx/volboot /etc/vx/volboot.<date>.save
# vxconfigd -m disable -x syslog
# vxdctl init
# vxdctl enable

IF problem with Protocol version

# vxdctl support
# vxdctl upgrade

to list
#vxdctl support