The IP over ATM Mailing List Archive by date

[Craig Partridge <craig@aland.bbn.com>]

Hi folks:
    
    I was chatting with Mark L about validity checks for ATM ARP packets
and he suggested I send a list of the checks I'm currently doing in my
software so we can start building a list:

    My software currently checks to see:

    * if the IP subnet number of the inbound ARP packets source IP address
    equals the subnet number of the LIS.  (If not, bad packet).

    * if the inbound ARP packet's IP address is the subnet broadcast address
    (either all 0's or all 1's).  If so, bad packet.  (I should probably
    check for all 1's and all 0's -- not just subnet case).

    * if the inbound ARP packet's IP address is already mapped to a
    different ATM address.  If not, bad packet. (i.e. Every IP address
    should have one MAC address, although one MAC address can have
    multiple IP addresses).

I'd be interested in checks that other folks do.

Thanks!

Craig