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Cisco VPN Internal Service Module for Cisco ISR G2
The Cisco® VPN Internal Service Module (VPN ISM) is a module for the Cisco Integrated Services Routers Generation 2 (ISR G2) that provides the capability to considerably increase performance for VPN encrypted traffic. The module has a multicore processor that operates independently of the host router resources, helping ensure maximum concurrent encrypted application performance while maintaining competitive performance for other types of traffic. The Cisco VPN ISM supports the latest versions of cryptography standards, including stronger National Security Agency (NSA) regulated cryptographic algorithms such as Suite B Cryptography.
The Cisco VPN ISM is ready to use, allowing quick and easy installation of the module for increasing VPN encryption performance on Cisco ISR G2 routers. The VPN ISM is compatible with all Cisco ISR G2 routers that support the ISM card slot and runs the same level of feature-rich functions as found on the Cisco ISR G2. It integrates all elements necessary to optimize branch-office IT infrastructure for delivery of encrypted application data from the data center and deployment of branch-office applications on demand, and houses them under a single chassis - the Cisco ISR G2.
The Cisco VPN ISM fits in the ISM slot in the Cisco ISR G2.
The Cisco VPN ISM supports the Cisco 1941 and the Cisco 2900 and 3900 Series Integrated Services Routers (ISRs).
An ISM slot for the Cisco 1941 and the Cisco 2900 and 3900 Series is required.
IP Security (IPsec) encryption supported
Hardware Secure Sockets Layer (SSL) encryption supported
The Cisco VPN ISM supports SSL VPN encryption with DES, 3DES and AES.
Note: VPN ISM does not support DTLS.
Number of encryption modules per router
The Cisco VPN ISM uses one encryption module per router.
Minimum Cisco IOS Software version required
The Cisco VPN ISM requires Cisco IOS Software Version 15.2(1)T1 or later. The SEC-K9 and HSEC-K9 licenses are required.
Maximum number of IPsec encrypted tunnels
The Cisco VPN ISM supports up to 500 tunnels on the Cisco 1941, up to 2000 tunnels on the Cisco 2900 Series, and up to 3000 tunnels on the Cisco 3900 Series.
The Cisco VPN ISM supports the IPsec Internet Key Exchange (IKE): RFCs 2401 to 2410, 2411, 2451, 4306, 4718, 4869, and 5996.