Configuring Group Encrypted Transport Vpn - Cisco 1941W Configuration Manual

Chapter Configuring Security Features

Configuring Group Encrypted Transport VPN

Configuring Group Encrypted Transport VPN
Group Encrypted Transport (GET) VPN is a set of features that are necessary to secure IP multicast
group traffic or unicast traffic over a private WAN that originates on or flows through a Cisco IOS device.
GET VPN combines the keying protocol Group Domain of Interpretation (GDOI) with IPsec encryption
to provide users with an efficient method of securing IP multicast traffic or unicast traffic. GET VPN
enables the router to apply encryption to nontunneled (that is, "native") IP multicast and unicast packets
and eliminates the requirement to configure tunnels to protect multicast and unicast traffic.
By removing the need for point-to-point tunnels, meshed networks can scale higher while maintaining
network-intelligence features that are critical to voice and video quality, such as QoS, routing, and
multicast. GET VPN offers a new standards-based IP security (IPsec) security model that is based on the
concept of "trusted" group members. Trusted member routers use a common security methodology that
is independent of any point-to-point IPsec tunnel relationship.
For additional information about configuring GET VPN, see Cisco Group Encrypted Transport VPN at:
http://www.cisco.com/en/US/docs/ios/12_4t/12_4t11/htgetvpn.html.
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