https://community.cisco.com/t5/network-security/fmc-packet-capture-problem-using-cidr/m-p/4195704#M1076530 Hi,<BR /><BR />I am not sure why its not possible. That goes to the product team. If you<BR />want CIDR capture, go to CLISH &gt; system support diag &gt; run CLI captures as<BR />in ASA<BR /><BR /><BR />**** please remember to rate useful posts<BR /> Wed, 09 Dec 2020 08:14:02 GMT Mohammed al Baqari 2020-12-09T08:14:02Z https://community.cisco.com/t5/network-security/fmc-packet-capture-problem-using-cidr/m-p/4195522#M1076524 <P>Am I doing something wrong with FMC packet captures or is the system limited?</P><P>&nbsp;</P><P>&nbsp; I've had our FMC for awhile now and noticed that when we go into the Device tab, Devices&gt; Device Management&gt; Troubleshoot&gt; Advanced Troubleshooting&gt; Capture w/Trace&gt; Add Capture&gt; the source/destination Network subnet masks don't recognize CIDR subnet masks.</P><P>&nbsp; Why in this day and age would a capture not allow cidr addresses?&nbsp; Am I missing something?</P> Tue, 08 Dec 2020 22:11:12 GMT https://community.cisco.com/t5/network-security/fmc-packet-capture-problem-using-cidr/m-p/4195522#M1076524 dewey89 2020-12-08T22:11:12Z https://community.cisco.com/t5/network-security/fmc-packet-capture-problem-using-cidr/m-p/4195704#M1076530 Hi,<BR /><BR />I am not sure why its not possible. That goes to the product team. If you<BR />want CIDR capture, go to CLISH &gt; system support diag &gt; run CLI captures as<BR />in ASA<BR /><BR /><BR />**** please remember to rate useful posts<BR /> Wed, 09 Dec 2020 08:14:02 GMT https://community.cisco.com/t5/network-security/fmc-packet-capture-problem-using-cidr/m-p/4195704#M1076530 Mohammed al Baqari 2020-12-09T08:14:02Z