I want to do L3 etherchannel between 3550-12g and 6509 for redundancy.Can I do this?

thanks! any comment is apprecatied.

3550-12g-(g0/1,g0/2)----------(4/1,4/2)--6509

6509:

set port channel 4/1-2 10

set port channel 4/1-2 mode on

set vlan 10 4/1-2

6509 msfc:

int vlan 10

ip addr 10.1.10.253 255.255.255.0

3550-12g:

int port-channel 20

no switchport

ip addr 10.1.10.250 255.255.255.0

int g0/1

no ip addr

channel-group 20 mode on

int g0/2

no ip addr

channel-group 20 mode on