topic Does the ASA 5510 support /31 mask? in Network Security https://community.cisco.com/t5/network-security/does-the-asa-5510-support-31-mask/m-p/2384508#M416312 <P>Hi,</P><P>I've got an ASA 5510 8.2(1) and have to move to a /31 Internet address.&nbsp; Is the ASA capable of it?</P><P>Thanks.</P> Fri, 21 Feb 2020 13:04:13 GMT Network Operations 2020-02-21T13:04:13Z Does the ASA 5510 support /31 mask? https://community.cisco.com/t5/network-security/does-the-asa-5510-support-31-mask/m-p/2384508#M416312 <P>Hi,</P><P>I've got an ASA 5510 8.2(1) and have to move to a /31 Internet address.&nbsp; Is the ASA capable of it?</P><P>Thanks.</P> Fri, 21 Feb 2020 13:04:13 GMT https://community.cisco.com/t5/network-security/does-the-asa-5510-support-31-mask/m-p/2384508#M416312 Network Operations 2020-02-21T13:04:13Z Does the ASA 5510 support /31 mask? https://community.cisco.com/t5/network-security/does-the-asa-5510-support-31-mask/m-p/2384509#M416314 <HTML><HEAD></HEAD><BODY><P>I don't believe it is supported:</P><P></P><P><A _jive_internal="true" href="https://community.cisco.com/thread/2243858">https://supportforums.cisco.com/thread/2243858</A></P><P></P><P></P><P>Daniel Dib <BR />CCIE #37149</P></BODY></HTML> Tue, 10 Dec 2013 07:39:23 GMT https://community.cisco.com/t5/network-security/does-the-asa-5510-support-31-mask/m-p/2384509#M416314 daniel.dib 2013-12-10T07:39:23Z Re: Does the ASA 5510 support /31 mask? https://community.cisco.com/t5/network-security/does-the-asa-5510-support-31-mask/m-p/2384510#M416325 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>/31 masks are generally supported only on Point-to-Point (non-multiaccess) WAN-Interfaces:</P><P><A href="http://www.cisco.com/en/US/docs/ios-xml/ios/ipaddr_ipv4/configuration/15-1s/config-ipv4-addr.html#GUID-A6AA4621-6662-4CC5-BE57-15CCD38C0FA2" rel="nofollow">Using IP addresses with 31-Bit Prefixes on Point-to-Point WAN Interfaces to Limit Number of IP Addresses Required</A></P><P></P><P>HTH</P><P>Rolf</P></BODY></HTML> Tue, 10 Dec 2013 14:35:51 GMT https://community.cisco.com/t5/network-security/does-the-asa-5510-support-31-mask/m-p/2384510#M416325 Rolf Fischer 2013-12-10T14:35:51Z