You cannot mix them, you will need to create another port-channel with the M2 module and then migrate the peer-link configuration over. More info on this is found on the following Cisco LIVE presentation BRKDCT-2048 Regards, Yamil
What I would recommend is to provision de FEX and it will let you make configuration of FEX HIF interfaces. More info here http://majornetwork.net/2011/11/fex-pre-provisioning/ Regards, Yamil
The only workaround you can have is to run OSPF on the WAN link and follow this configuration guide. http://www.cisco.com/c/en/us/support/docs/security/pix-500-series-security-appliances/63882-gre-ipsec-ospf.html With EIGRP the only workaround is enc...
