Cisco Cisco IOS Software Release 12.2(8)YJ Release Notes
5
Release Notes for the Cisco 800 Series Routers for Cisco IOS Release 12.2(8)YJ
OL-2793-01
New and Changed Information
Easy VPN Client Phase II
Applications for routers (and other forms of broadband access devices) that provide high-performance
connections to the Internet often require the security of virtual private network (VPN) connections with
a high level of access authentication and the capability to encrypt data between two endpoints. However,
establishing a VPN connection between two routers can be complex, and typically requires detailed
coordination between network administrators to configure the router VPN parameters.
connections to the Internet often require the security of virtual private network (VPN) connections with
a high level of access authentication and the capability to encrypt data between two endpoints. However,
establishing a VPN connection between two routers can be complex, and typically requires detailed
coordination between network administrators to configure the router VPN parameters.
The Cisco Easy VPN client feature eliminates much of this work by implementing the Cisco Unity
Client protocol, which allows most VPN parameters to be defined at a VPN 3000 concentrator, acting as
an IPSec server. After network administrators configure the IPSec server, they can create a VPN
connection with minimal configuration on an IPSec client (such as a Cisco 800 series router). Note that
Cisco 800 series routers are supported as Easy VPN clients of VPN 3000 IPSec servers. When the IPSec
client initiates the VPN tunnel connection, the IPSec server transmits the IPSec policies to the IPSec
client and creates the corresponding VPN tunnel connection.
Client protocol, which allows most VPN parameters to be defined at a VPN 3000 concentrator, acting as
an IPSec server. After network administrators configure the IPSec server, they can create a VPN
connection with minimal configuration on an IPSec client (such as a Cisco 800 series router). Note that
Cisco 800 series routers are supported as Easy VPN clients of VPN 3000 IPSec servers. When the IPSec
client initiates the VPN tunnel connection, the IPSec server transmits the IPSec policies to the IPSec
client and creates the corresponding VPN tunnel connection.
Note
The Cisco Easy VPN client can establish communication with a single peer (IPSec server).
The Phase II implementation of the Cisco Easy VPN Client provides enhancements and additional capabili-
ties to Phase I features. In Phase II, the Cisco Easy VPN Client can provide the following enhancements and
feature capabilities:
•
Manual Control of IPSec VPN tunnels—to establish and terminate the IPSec VPN tunnel on
demand.
demand.
•
Restore NAT Configuration when IPSec VPN Tunnel Is Down—automatically restores the NAT
configuration when the IPSec VPN tunnel is disconnected.
configuration when the IPSec VPN tunnel is disconnected.
•
Peer Hostname Enhancement
For instructions on configuring Cisco Easy VPN client, refer to the publication
. This document is available on Cisco Connection Online.
Low Latency Queueing
Low Latency Queueing (LLQ) provides a low-latency, strict-priority transmit queue for voice over IP
(VoIP) traffic. Strict priority queueing allows delay-sensitive data such as voice to be dequeued and sent
first (before packets in other queues are dequeued), giving delay-sensitive data preferential treatment
over other traffic. Refer to
(VoIP) traffic. Strict priority queueing allows delay-sensitive data such as voice to be dequeued and sent
first (before packets in other queues are dequeued), giving delay-sensitive data preferential treatment
over other traffic. Refer to
for
more information on this feature.
New Software Features in Release 12.2 T
For information regarding the features supported in Cisco IOS Release 12.2 T, refer to the
Cross-Platform Release Notes and New Feature Documentation links at the following location on
Cisco.com and the Documentation CD-ROM:
Cross-Platform Release Notes and New Feature Documentation links at the following location on
Cisco.com and the Documentation CD-ROM:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/index.htm
This URL is subject to change without notice. If it changes, point your web browser to Cisco.com, and
click on the following path:
click on the following path:
Service & Support: Technical Documents: Release 12.2 (from the Cisco IOS Software
drop-down list)
drop-down list)