You ACLs are swapped.  They should be: access-list DMZ permit icmp 172.17.2.0 0.0.0.255 172.17.1.0 0.0.0.255access-list Inside permit icmp 172.17.1.0 0.0.0.255 172.17.2.0 0.0.0.255
Hi,  I'm having problems trying to get some ACLs to work on two VLAN on a 6248 switch stack, 2 6248s. I have copied the configuration, see below, if anyone can spare a few minutes to see where I am going wrong I would be grateful.  The two VLANs I am trying to configure ACLs on are an inside network and a DMZ network and at the moment I am just trying to allow ping requests between machines as a test. Thanks,   
VLan ACLs on a 6224