Date created: 11/28/11 15:29:03. Last modified: 02/16/16 10:45:44
Max MTU Size
#!/bin/bash # Pass a starting mtu size and an ip address/host name #./mtusize.sh 1430 www.google.co.uk maxmtu=$1 dest=$2 while true; do ping -s $maxmtu -c 3 -M do $dest if [ $? -ne 0 ] ; then let maxmtu=maxmtu-1 break; fi let maxmtu=maxmtu+1 done let finalMTU=$maxmtu+28 echo "Last working MTU was $finalMTU octets; ($maxmtu octets + 8 octet ICMP header + 20 octect IP header)"
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