Cisco Cisco NAC Appliance 3390 信息指南

Cisco Systems, Inc.
www.cisco.com

 

For all switch models/NMEs, Cisco recommends checking for limitations and verifying support for 
MAC notification and/or linkup-linkdown SNMP traps for the switch OS version you intend to use. See 

 for further details. 

Administrators update switch and Wireless LAN Controller (WLC) support object IDs (OIDs) using the 
update function in the CAM Device Management > Clean Access > Updates web console page. For 
example, if a new model of a supported switch family is released, Cisco NAC Appliance administrators 
only need to retrieve an update to ensure the latest support for switch OIDs. (That is, you are not required 
to upgrade the CAM/CAS software image, itself). The update switch OID feature only applies to existing 
models. If a new switch series is introduced, administrators will still need to upgrade to ensure OOB 
support for the new switches. Refer to the “Switch Management” (OOB) chapter of the

 for details.

Cisco NAC Appliance is agnostic to switch/router platforms and versions. IB deployments can be Layer 
2 (L2) or Layer 3 (L3):

For L2 deployments, user MAC/IP addresses need to be visible to the CAS

For L3 deployments (i.e. where the CAS can be one or more hops away from the user), the CAS 
differentiates users by IP address