This version of CMS, which comes with Cisco IOS release later than 12.1(9)EA1, has these enhancements:
You can create and attach ACLs to the switch ports of Catalyst 3550 switches. You can use configuration windows to do this (click Device > ACL), or you can use the Security Wizard (click Device > Security Wizard). The ACLs can filter both IP and MAC packets, in the inbound direction only.
Until now, CMS supported the voice VLAN feature on only Catalyst 2900 XL, 2900 LRE, and 3500 XL switches. This version of CMS extends the feature to Catalyst 2950 and 3550 switches.
You can assign a VLAN an ID in the normal range (1 to 1005) or in the new extended range (1006-4094). All Catalyst 3550 switches and Catalyst 2950 switches that run the enhanced software image support the extended range.
A VLAN in the extended range is suspended if the VTP mode of the switch is not transparent. The only parameter that you can configure is the MTU size.
CMS supports CWDM (Coarse Wave Division Multiplexer) fiber-optic GBIC modules. These can be used with Cisco CWDM Passive Optical Systems to transmit data up to 120 km. The higher the wavelength of the module, the farther the transmission can travel.
The Front Panel view uses a distinctive color (see legend) to represent the wavelength of a CWDM GBIC module.