radius server authentication

[7740090]

Having trouble getting nexus 5000 series to authenticate with radius server. I have done other switches in the past but the nexus seems a bit different. Here is what my config looks like.
Here is a config on a working non nexus switch
aaa new-model
aaa group server radius ias-local
server 10.0.2.4
aaa autentication login default group radius local
aaa authentication dot1x default group radius
aaa accounting exec default
group radius
radius-server host 10.0.2.4 key xxxxxxxxxxx
config on nexus
radius-server key 7 xxxxxx
radius-server host 10.0.2.4 authentication accouting
aaa authentication login default group isa-group