1. Default Gateway setup for inet0.
# lsattr -El inet0
– route net,-hopcount,0,,

2. Default Gateway Setup
# mkdev -l inet0

3. Default Gateway Confirmation
# netstat -rn
# odmget -q attribute=route CuAt

4. Edit etherchannel netaddr ip
# smit etherchannel ; Change / Show Characteristics of an EtherChannel / Link Aggregation
; Internet Address to Ping
Put gateway IP address.