Cisco this week launched several products designed to expand the capabilities of its switches and routers in further virtualizing data center systems and processes.

The broadened lineup includes virtual machine (VM) switching software, SAN switching modules and operating system enhancements, as well as extensions to its WAN application acceleration portfolio to virtualize branch offices and desktops. The new products underscore Cisco's intention to assume more general and overall IT functions within compute-intensive data centers beyond its traditional switching and routing role.

Some of the new products were expected.

The VM switching software is called VN-Link and it comes in two flavors: Nexus 1000V, which is a software-only version for multivendor servers; and hardware embedded into Cisco's Nexus 5000 data center switch.

VN-Link runs with VMware's ESX server software and is a replacement for that software's VM switching capability. VN-Link features policy-based VM connectivity and mobility, by taking a VM's network and security properties with it while it is moved around the data center.

This is intended to provide consistent operations of the mobile VM environment, Cisco says.

The new SAN products include three 8Gbps Fibre Channel switching modules for Cisco's MDS 9000 SAN switches, and new capabilities in Cisco's SAN operating system, which has been re-branded NX-OS. The modules are intended to upgrade MDS 9000 customers to higher speeds from the 2G and 4Gbps speeds the switches now support.

The modules sport 24, 48 or four 8G/44 4Gbps ports -- for consolidation of standard servers -- and support line-rate encryption of Fibre Channel data between any Cisco MDS 9000 8Gbps module, Cisco says. The modules adhere to Cisco's TrustSec Fibre Channel security architecture, which defines role-based access to networked resources.

The Cisco SAN operating system, SAN-OS, has been renamed NX-OS to reflect Cisco's goal of developing a single data center operating system optimized for a unified -- or Fibre Channel over Ethernet (FCoE) -- switching fabric for both LAN and SAN traffic. Enhancements to NX-OS include support for the new 8Gbps modules; consistent policy, visibility, and diagnostics for both physical and virtual server environments; virtual machine awareness through VN-Link; and data erasure.