topic ASA 5520 Failover in Network Security https://community.cisco.com/t5/network-security/asa-5520-failover/m-p/655332#M1024940 <P>I have two ASA 5520 appliances running 7.0(4). I use the Management0/0 interface as a connection to the Internet as it is only 100mbps.</P><P></P><P>That leaves me four Gigabit interfaces to use with DMZ architecture.</P><P></P><P>I tried to configure active/standby failover using VLAN interfaces on one physical Gigabit interface. The documentation says this is possible and I don't want to burn a whole Gigabit physical interface just on failover -that is an expensive waste of hardware.</P><P></P><P>The failover confguration would not work despite indentical VLAN interfaces on each member.</P><P></P><P>Does anybody have any thoughts as to why sub-interfaces, running in isolated VLANs do not work with failover??</P><P></P><P>Thanks </P> Mon, 11 Mar 2019 09:38:29 GMT BATCCOLOGIN 2019-03-11T09:38:29Z ASA 5520 Failover https://community.cisco.com/t5/network-security/asa-5520-failover/m-p/655332#M1024940 <P>I have two ASA 5520 appliances running 7.0(4). I use the Management0/0 interface as a connection to the Internet as it is only 100mbps.</P><P></P><P>That leaves me four Gigabit interfaces to use with DMZ architecture.</P><P></P><P>I tried to configure active/standby failover using VLAN interfaces on one physical Gigabit interface. The documentation says this is possible and I don't want to burn a whole Gigabit physical interface just on failover -that is an expensive waste of hardware.</P><P></P><P>The failover confguration would not work despite indentical VLAN interfaces on each member.</P><P></P><P>Does anybody have any thoughts as to why sub-interfaces, running in isolated VLANs do not work with failover??</P><P></P><P>Thanks </P> Mon, 11 Mar 2019 09:38:29 GMT https://community.cisco.com/t5/network-security/asa-5520-failover/m-p/655332#M1024940 BATCCOLOGIN 2019-03-11T09:38:29Z Re: ASA 5520 Failover https://community.cisco.com/t5/network-security/asa-5520-failover/m-p/655333#M1024941 <HTML><HEAD></HEAD><BODY><P>This URL might help you:</P><P><A class="jive-link-custom" href="http://www.cisco.com/univercd/cc/td/doc/product/multisec/asa_sw/v_70/cref_txt/mr.htm#wp1535477" target="_blank">http://www.cisco.com/univercd/cc/td/doc/product/multisec/asa_sw/v_70/cref_txt/mr.htm#wp1535477</A></P></BODY></HTML> Fri, 02 Mar 2007 19:35:19 GMT https://community.cisco.com/t5/network-security/asa-5520-failover/m-p/655333#M1024941 drolemc 2007-03-02T19:35:19Z Re: ASA 5520 Failover https://community.cisco.com/t5/network-security/asa-5520-failover/m-p/655334#M1024942 <HTML><HEAD></HEAD><BODY><P>Make sure you haven't named the VLAN-interfaces!</P></BODY></HTML> Wed, 07 Mar 2007 17:56:49 GMT https://community.cisco.com/t5/network-security/asa-5520-failover/m-p/655334#M1024942 r.vdoever 2007-03-07T17:56:49Z