https://community.cisco.com/t5/network-security/acl-processing-in-isr/m-p/2834519#M173743 <P>Hi,</P> <P></P> <P>How the configured ACLs are processed in ISR routers (C3800 / C3900), is it processed in Hardware / Software (CPU) ?</P> <P>Does ISR has TCAM for ACL Processing ?</P> <P></P> Tue, 12 Mar 2019 07:04:45 GMT RAJMOHAN RAMAMOORTHY 2019-03-12T07:04:45Z https://community.cisco.com/t5/network-security/acl-processing-in-isr/m-p/2834519#M173743 <P>Hi,</P> <P></P> <P>How the configured ACLs are processed in ISR routers (C3800 / C3900), is it processed in Hardware / Software (CPU) ?</P> <P>Does ISR has TCAM for ACL Processing ?</P> <P></P> Tue, 12 Mar 2019 07:04:45 GMT https://community.cisco.com/t5/network-security/acl-processing-in-isr/m-p/2834519#M173743 RAJMOHAN RAMAMOORTHY 2019-03-12T07:04:45Z https://community.cisco.com/t5/network-security/acl-processing-in-isr/m-p/2834520#M173746 <P>ACLs on the ISR G2 are supported in the CEF switching path. CEF is a hybrid of software and hardware as far as I understand it. It does use TCAM on the router for hardware assistance.</P> <P>See "<A href="https://www.ciscolive.com/online/connect/sessionDetail.ww?SESSION_ID=7668&amp;backBtn=true">BRKARC-2350 - IOS Routing Internals (2013 Orlando)</A>" for more details.</P> Tue, 29 Dec 2015 15:07:07 GMT https://community.cisco.com/t5/network-security/acl-processing-in-isr/m-p/2834520#M173746 Marvin Rhoads 2015-12-29T15:07:07Z