[openib-general] Re: IPoIB MTU Changing

Roland Dreier roland at topspin.com
Thu Jun 9 09:48:27 PDT 2005


    Hal> Yes, the multicast MTU could further trim this down but the
    Hal> admin MTU appears to be currently capped at IPOIB_PACKET_SIZE
    Hal> - IPOIB_ENCAP_LEN.  That's OK for a 2K link MTU but if the
    Hal> link were negotiated at 4K MTU, shouldn't this be allowed to
    Hal> be larger if requested ?

No, you would have to change the PACKET_SIZE define to make 4K packets
work anyway.

 - R.




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