topic IDSM-2 VLAN pairing in Network Security https://community.cisco.com/t5/network-security/idsm-2-vlan-pairing/m-p/1229093#M77904 <P>Is there any limitation for number of VLAN pairs with IDSM-2 module in 6500 to configure in in-line mode ?</P> Sun, 10 Mar 2019 11:28:00 GMT nkariyawasam 2019-03-10T11:28:00Z IDSM-2 VLAN pairing https://community.cisco.com/t5/network-security/idsm-2-vlan-pairing/m-p/1229093#M77904 <P>Is there any limitation for number of VLAN pairs with IDSM-2 module in 6500 to configure in in-line mode ?</P> Sun, 10 Mar 2019 11:28:00 GMT https://community.cisco.com/t5/network-security/idsm-2-vlan-pairing/m-p/1229093#M77904 nkariyawasam 2019-03-10T11:28:00Z Re: IDSM-2 VLAN pairing https://community.cisco.com/t5/network-security/idsm-2-vlan-pairing/m-p/1229094#M77905 <HTML><HEAD></HEAD><BODY><P>Each interface has a limit of around 255 inline vlan pairs. The IDSM-2 has 2 monitoring interfaces, and so has an upport limit of around 510 inline vlan pairs.</P><P></P><P>I wouldn't recommend using near that many.</P><P></P><P>The biggest limiting factors you are going to face is performance, and number of virtual sensors.</P><P></P><P>From a performance perspective the IDSM-2 is limited to around 500 Mbps regardless of how many inline vlan pairs are used.</P><P></P><P>The IDSM-2 is also limited to only 4 virtual sensors. So you can only have 4 sets of signature settings, and 4 sets of filters. So the 510 inline vlan pairs would have to be grouped within these 4 virtual sensors.</P><P></P></BODY></HTML> Tue, 20 Jan 2009 15:32:19 GMT https://community.cisco.com/t5/network-security/idsm-2-vlan-pairing/m-p/1229094#M77905 marcabal 2009-01-20T15:32:19Z