Cisco Cisco IOS Software Release 12.2(15)ZN 릴리즈 노트
5
Release Notes for the Cisco 1700 Series Routers for Cisco IOS Release 12.2(15)ZN
OL-4281-01
New and Changed Information
New and Changed Information
The following sections list the new software features supported by the Cisco 1700 series routers for
Release 12.2(15)ZN.
Release 12.2(15)ZN.
New Software Features in Release 12.2(15)ZN
The following sections describe the new software features supported by the Cisco 1700 series routers for
Release 12.2(15)ZN.
Release 12.2(15)ZN.
Layer 2 Tunneling Protocol version 3
Layer 2 Tunneling Protocol version 3 (L2TPv3) allows service providers and large enterprises with
native IP core networks to offer high-speed Layer 2 tunneling or Virtual Private Network (VPN) services
to end-user customers, in conjunction with their Layer 3 VPN offerings. L2TPv3 VPN services can be
provided without increasing the expenditure for capital equipment by simply upgrading the
Cisco IOS software. L2TPv3 is provided as part of the Unified VPN portfolio of leading-edge VPN
technologies available over the widest breadth of Cisco routers.
native IP core networks to offer high-speed Layer 2 tunneling or Virtual Private Network (VPN) services
to end-user customers, in conjunction with their Layer 3 VPN offerings. L2TPv3 VPN services can be
provided without increasing the expenditure for capital equipment by simply upgrading the
Cisco IOS software. L2TPv3 is provided as part of the Unified VPN portfolio of leading-edge VPN
technologies available over the widest breadth of Cisco routers.
L2TPv3 is emerging as a core tunneling and VPN technology for next-generation networks. L2TPv3
provides the flexibility and scalability of IP with the privacy of Frame Relay and Asynchronous Transfer
Mode (ATM). L2TPv3 will allow network services to be delivered over routed IP networks. Service
decisions will be made at the VPN and tunnel endpoints and switched without requiring intermediate
preprocessing, providing higher efficiency and scalability.
provides the flexibility and scalability of IP with the privacy of Frame Relay and Asynchronous Transfer
Mode (ATM). L2TPv3 will allow network services to be delivered over routed IP networks. Service
decisions will be made at the VPN and tunnel endpoints and switched without requiring intermediate
preprocessing, providing higher efficiency and scalability.
By reducing customer networking complexity and cost, L2TPv3 VPNs allow service providers to serve
a more diverse base of small and medium-sized businesses. Rather than setting up and managing
individual point-to-point circuits between each office, a business provides only one connection from its
office router to a service-provider edge router. Service providers expand service offerings and generate
additional revenue by offering customers VPNs with managed Internet, intranet, and extranet without
the complexity that these applications previously required.
a more diverse base of small and medium-sized businesses. Rather than setting up and managing
individual point-to-point circuits between each office, a business provides only one connection from its
office router to a service-provider edge router. Service providers expand service offerings and generate
additional revenue by offering customers VPNs with managed Internet, intranet, and extranet without
the complexity that these applications previously required.
Table 3
Feature List by Feature Set for Cisco 1720, 1721, 1751, 1751-V, and 1760 Routers
Feature
In
Feature Set
IP/PLUS
Layer 2 Tunneling Protocol
version 3
version 3
12.2(15)ZN
Yes
Table 4
Feature List by Feature Set for Cisco 1721, 1751, 1751-V, and 1760 Routers
Feature
In
Feature Set
IP/ADSL/FW/
IDS PLUS
IPSEC 3DES
IDS PLUS
IPSEC 3DES
IP/ADSL
PLUS IPSEC
3DES
PLUS IPSEC
3DES
Layer 2 Tunneling Protocol
version 3
version 3
12.2(15)ZN
Yes
Yes