Specifications

Table Of Contents

Release Notes for Cisco 7000 Family for Cisco IOS Release 12.1 T

78-10811-05

New and Changed Information

IKE Extended Authentication

Platforms: Cisco 7100 series, Cisco 7200 series, and Cisco 7500 series routers

IKE Extended Authentication (XAUTH) is a draft RFC developed by the Internet Engineering

TaskForce (IETF) based on the Internet Key Exchange (IKE) protocol. XAUTH allows all Cisco IOS

authentication methods, including those based on RADIUS or TACACS+ servers, to perform both user

and device authentication for remote users and clients.

The XAUTH feature is an extension to the IKE feature, and does not replace IKE authentication.

ISDN Network Side for PRI for ETSI Net5 PRI

Platforms: Cisco 7200 series and Cisco 7500 series routers

The ISDN Network Side PRI feature enables Cisco IOS to replicate the public switched network

interface to a PBX that is compatible with the ETSI Net5 switch type.

Routers and PBXs are both traditionally customer premises equipment (CPE) with respect to the public

switched network interfaces. For Voice over IP (VoIP) applications, it is desirable to interface access

servers to PBXs with the access server representing the public switched network.

Enterprise organizations use the current VoIP features with Cisco products as a method to reduce long

distance costs for phone calls within and outside of their organizations. However, there are times that a

call cannot go over VoIP and the call needs to be placed using the public switched telephone network

(PSTN). The customer then must have two devices connected to a PBX so that some calls can be placed

using VoIP and some calls can be placed over the PSTN. By contrast, with this feature, Cisco access

servers can connect directly to user-side CPE devices such as PBXs. Voice calls and data calls can be

placed without requiring two different devices to be connected to the PBXs.

With this feature, the access server can provide a standard ISDN PRI network-side interface to the PBXs

and can mimic the behavior of legacy phone switches. To a PBX, the access server functions as a Net5

PRI switch. No change in PBX capability or behavior is required.

PPPoE on ATM

Platforms: Cisco 7200 series and Cisco 7500 series routers

The Point-to-Point Protocol over Ethernet (PPPoE) on ATM feature provides the ability to connect a network

of hosts over a simple bridging-access device to a remote access concentrator. With this model, each host

utilizes its own PPPoE stack and the user is presented with a familiar user interface. Access control, billing

and type of service can be handled on a per-user, rather than a per-site, basis. Before a point-to-point

connection over Ethernet can be provided, each PPP session must learn the Ethernet address of the remote

peer and establish a unique session identiﬁer. A unique session identiﬁer is provided by the PPPoE Discovery

Stage Protocol.

PGM Host

Platforms: Cisco 7200 series and Cisco 7500 series routers

Pragmatic General Multicast (PGM) is a reliable multicast transport protocol for multicast applications

that require reliable, ordered, duplicate-free multicast data delivery from multiple sources to multiple

receivers. PGM guarantees that a receiver in a multicast group either receives all data packets from

transmissions and retransmissions, or detects unrecoverable data packet loss. PGM is offered as a