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How to disable checksum offload permanently?

  • 1.  How to disable checksum offload permanently?

    Posted Wed February 02, 2011 01:30 AM

    Originally posted by: CityRoamer16


    Running on AIX 5.3 TL12 - Looking to disable checksum_offload permanently on our network interface. Is the only way to do this through a startup script?

    1. chdev -l en0 -a checksum_offload=no -P
    Method error (/usr/lib/methods/chgif):
    0514-018 The values specified for the following attributes
    are not valid:
    0821-228 chgif: Bad attribute(s) or attribute value(s): checksum_offloa

    1. lsattr -E -l en0 -H
    attribute value description user_settable
    alias4 IPv4 Alias including Subnet Mask True
    alias6 IPv6 Alias including Prefix Length True
    arp on Address Resolution Protocol (ARP) True
    authority Authorized Users True
    broadcast Broadcast Address True
    mtu 1500 Maximum IP Packet Size for This Device True
    netaddr 10.48.8.204 Internet Address True
    netaddr6 IPv6 Internet Address True
    netmask 255.255.252.0 Subnet Mask True
    prefixlen Prefix Length for IPv6 Internet Address True
    remmtu 576 Maximum IP Packet Size for REMOTE Networks True
    rfc1323 Enable/Disable TCP RFC 1323 Window Scaling True
    security none Security Level True
    state up Current Interface Status True
    tcp_mssdflt Set TCP Maximum Segment Size True
    tcp_nodelay Enable/Disable TCP_NODELAY Option True
    tcp_recvspace Set Socket Buffer Space for Receiving True
    tcp_sendspace Set Socket Buffer Space for Sending True


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