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Cisco IOS Software Enables Rich Services

AOL Support

The Cisco AS5400 offers100-percent coveragefor dedicated

AOL dial installations, as well as other services that utilize

the “TCP-Clear” or “autocommand Telnet” method of

carrying dialup data. “DNS round robin” is also supported

to allow load balancing of connections across multiple AOL

hosts. The Cisco AS5400 also includes all the Layer 2

Tunneling Protocol (L2TP) features necessary to support

AOL 6.0 clients and later.

Access VPN

Virtual Private Networks

The Cisco AS5400 is ideally suited to providing wholesale

dial services to both large corporations and ISPs who do not

want to support their own dial pools.

With support for VPNs in Cisco IOS software, SPs can

take advantage of their existing infrastructures to deliver

local dialup access for users of enterprise networks. By

providing virtual dialup solutions, SPs can offer a full range

of services closer to the remote user. Local calls can now

be placed to gain access to the core infrastructures. Virtual

dialup services not onlyattract more users of thisservice, but

becausecallsareterminatedlocally,long-distancechargesare

eliminated and infrastructure costs are reduced.

VPN Provisioning and Accounting

Of importance to SPs in the VPN environment is the need to

both provision and account for the number of connections

thatare allowed by VPNcustomers.TheCiscovirtualprivate

dialup network (VPDN) session counting software can keep

track of the number of connections from the Cisco AS5400

to the user’s home gateway. This software is provided in

Cisco IOS software running on the Cisco AS5400 and in the

Cisco access control server (ACS) to provide comprehensive

accounting and billing information to ISPs about the virtual

connections that their customers make.

Wholesale Dial

Many ISPs and content providers (or “portals”) must

provide dialup Internet access as part of their service

package, and enterprise companies want to offer

“private-label” Internet access to promote their brand.

However, theydo not havethe experience, personnel,or time

andmoney to buildouta dialupaccessinfrastructure,orthey

cannot build it fast enough—particularly when expanding

into new regions. SPs can now take advantage of this

opportunity through the Cisco wholesale dial solutions.

The Cisco wholesale dial outsourcing solution delivers

“virtual port” capability across any number of Cisco

remote-access servers. Coupled with sophisticated port

policy management that guarantees port availability to

wholesale customers, Cisco enables carriersand ISPs to offer

unique serviceofferings that drive incremental revenue while

holding down operations costs.

Service-Level Management

The Cisco AS5400 supports Cisco Resource Pool

Management (RPM). This enables SPs to offer guaranteed

dial port availability across shared dial infrastructure,

thereby allowing SPs to guarantee service levels to their

customers. In addition, RPM offers the ability to ensure

“fairness”across multiple customersforthe sameshareddial

ports when there is no service-level guarantee, and it also

enables the Cisco AS5400 to support a form of ISDN tariff

arbitrage known as “data over voice bearer service”

(DOVBS).

Resource pooling can be conﬁgured on a per-AS5400

or per-network basis. In the former case, customer proﬁles

stored on the Cisco AS5400 determine how resources are

allocated to each of the wholesale dial service provider’s

customers. Each customer is identiﬁed based on a list of

dialed numbers (DNIS). When network-wide service levels

are required, external Cisco Resource Pool Management

Server (RPMS) software running on a Sun Solaris server

holds the customer proﬁles and keeps track of port

utilization across multiple Cisco AS5x00s. The Cisco

AS5400 queries the RPMS when a new call ispresented, and

theRPMSmakes its determinationofwhetherthe callshould

be accepted based on network utilization and the proﬁles for

each customer.

DOVBS is used in areas where ISDN data calls are

charged ata higher rate (or tariff) than ISDNvoice calls. The

ISDN customer provided equipment (CPE) device (terminal

adapter or router) must support DOVBS operation—the

majority of popular ISDN devices available today support

DOVBS. The ISDN CPE device is programmed to signal all

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