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Configuring an ADSL WAN Interface Card on
Cisco 1700 Series Routers
This document describes asymmetric digital subscriber line (ADSL) one-port wide area network (WAN)
interface cards (WICs). These cards provide ADSL high-speed digital data transfer between a single
customer premises equipment (CPE) subscriber and a central office.
ADSL WICs are available in three variations: ADSL over POTS (WIC-1ADSL), ADSL over POTS with
Dying Gasp support (WIC-1ADSL-DG), and ADSL over ISDN with DyingGasp support
(WIC-1ADSL-I-DG). The ADSL over POTS WICs are commonly used to provide ADSL services over
ordinary telephone lines. The ADSL over ISDN WIC is used to provide ADSL services in those areas of
the world which have extensive ISDN backbones already in place.
This document contains the following sections:
FCC Notice, page 3
Corporate Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Copyright © 2002. Cisco Systems, Inc. All rights reserved.

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   Summary of Contents for Cisco 1700 Series

  • Page 1: Table Of Contents

    Configuring FRF.5 and FRF.8 Internetworking Functions, page 29 • Obtaining Documentation, page 30 • Obtaining Technical Assistance, page 31 • Corporate Headquarters: Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA Copyright © 2002. Cisco Systems, Inc. All rights reserved.

  • Page 2: Feature Overview

    Analog phones DSLAM On Cisco 1700 series routers, an ADSL WIC fits into a Cisco 1700 series router chassis. The card supports data and voice networks through the asynchronous transfer mode (ATM) protocol with the AAL5 format. ATM quality of service (QoS) for permanent virtual circuits (PVCs) is also supported.

  • Page 3: Related Documents

    The following document provides additional information about configuring QoS features and Frame Relay Forum (FRF) internetworking functions on ADSL WICs. Enhanced Voice and QoS for ADSL and G.SHDSL on Cisco 1700 Series, Cisco 2600 Series, and • Cisco 3600 Series Routers...

  • Page 4: Safety Warnings

    Do not operate the system unless all cards, faceplates, front covers, and rear covers are in place. Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers OL-3317-03...

  • Page 5

    Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote risk of electric shock from lightning. To report a gas leak, do not use a telephone in the vicinity of the leak. Warning Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers OL-3317-03...

  • Page 6: Connecting An Adsl Wic To The Network

    For safety, periodically check the resistance value of the antistatic strap, which should be between 1 Caution and 10 megohms (Mohms). Connecting an ADSL WIC to the Network For this connection, use a standard lavender RJ-11 cable. Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers OL-3317-03...

  • Page 7: Configuring The Adsl Interface

    Configuring the ADSL Interface If you are connecting a Cisco 1700 series router with an ADSL WIC to an RJ-11 wall jack that has Note the ADSL pair wired for pins 2 and 5, you must use the lavender crossover cable with the blue stripe.

  • Page 8

    This method, called configuration mode, provides the greatest power and flexibility. For further information about these commands, refer to the IOS configuration guides and command references. Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers OL-3317-03...

  • Page 9

    Router(config)# interface atm 0 Router(config-if)# The prompt changes again to show that you are in interface configuration mode. For the Cisco 1751 and 1760 routers, enter the command as interface atm slot/port. For Note example, interface atm 0/0. Select the ADSL operating mode:...

  • Page 10

    The host must be on the remote side of the router’s synchronous serial connection to the WAN. • User Datagram Protocol (UDP) broadcasts to and from the router and the TCP/IP host must be enabled. Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers OL-3317-03...

  • Page 11

    If the current configuration is no longer valid, after about one minute you see the following prompt: Step 2 Would you like to enter the initial dialog? [yes]: Press Return or enter yes to enter the System Configuration dialog. Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers OL-3317-03...

  • Page 12

    • The scenario configurations above are identical to those for the Cisco 827-4V router. To configure these scenarios on the Cisco 1720, 1721, 1751, and 1760 routers with the ADSL WIC, refer to the Cisco 827 Routers Software Configuration Guide.

  • Page 13: Using Pots Splitters And Microfilters

    POTS splitters and microfilters are used on telephone lines to ensure voice- and data-call quality. This section describes splitters and microfilters and tells how and when to use them with the Cisco 1700 series routers. POTS splitters result in the best data and voice performance when the router and the telephone are used on the same telephone line.

  • Page 14

    Microfilters Microfilters are installed on telephones to improve voice-call quality when voice and data equipment are using the same telephone line (twisted pair). You should use microfilters with the Cisco 1700 series routers only when the two following conditions exist: The documentation for the telephone(s) you are using with the router states that microfilters should •...

  • Page 15

    For optional telephones connected through the splitter, microfilters are optional. They should be • installed only if they improve telephone call quality. • For telephones connected directly to the telephone line, microfilters are required. Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers OL-3317-03...

  • Page 16

    The microfilter is optional; it should be installed only if it improves telephone call quality. Figure 11 No Splitter, Optional Microfilter to telco (ADSL Line 2 or G.SHDSL) to telco (POTS) Actual wall of building Optional microfilter Cisco router Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers OL-3317-03...

  • Page 17: Configuring Quality Of Service Parameters

    Configuring Quality of Service Parameters Configuring Quality of Service Parameters This section discusses quality of service (QoS) parameters that can be configured for the 1700 series platforms when using the ADSL WIC. The following features are included: Low Latency Queuing (Priority Queuing with Class-Based Weighted Fair Queuing) •...

  • Page 18

    DiffServ addresses the clear need for relatively simple and coarse methods of categorizing traffic into different classes and applying QoS parameters to those classes. DiffServ supports class-based marking. Cisco Express Forwarding (CEF) mode is required for DiffServ support. To enable CEF, enter the ip cef command.

  • Page 19

    576 ip address 10.0.0.10 255.255.255.0 rate-limit output 368000 2000 2000 conform-action set-dscp-transmit 40 exceed-action set-dscp-transmit 48 pvc 0/33 protocol ip 10.0.0.9 broadcast vbr-rt 160 160 1 encapsulation aal5snap Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers OL-3317-03...

  • Page 20

    To change this default value, enter the max-reserved-bandwidth command. LLQ must be enabled when you configure MLPPP with link fragmentation and interleaving. The Cisco 1700 series routers only support PPP encapsulation for MLPPP with link fragmentation Note and interleaving. The dialer interface is not supported.

  • Page 21

    ATM0/0.1 point-to-point description configuring limi manage in pvc brings down the atm protocol mtu 4000 ip address 1.0.0.1 255.0.0.0 pvc 88/88 random-detect attach 1751_DSL protocol ip 2.0.0.2 Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers OL-3317-03...

  • Page 22

    256 256 20 precedence 0-1 bump explicit 2 no protect vc no protect group interface ATM0/0 description COLLEGAMENTO no ip address atm vc-per-vp 256 no atm ilmi-keepalive Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers OL-3317-03...

  • Page 23

    CLP bit set to 0. The ATM CLP bit marking feature allows you to control the CLP setting on Cisco routers. The marking of the CLP bit is implemented on a per-packet basis so that the CLP bit of every ATM cell that belongs to a particular packet is set to either 0 or 1.

  • Page 24

    ATM0/0 no ip address no atm ilmi-keep-alive dsl operating-mode auto interface ATM0/0.1 point-to-point pvc 0/33 protocol ip 10.0.0.10 vbr-rt 320 320 30 tx-ring-limit 3 protocol ppp Virtual-Template1 Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers OL-3317-03...

  • Page 25

    48 class VOIP bandwidth 64 set ip precedence 6 interface Loopback1 ip address 10.0.0.10 255.255.255.252 interface ATM0/0 dsl operating-mode auto no ip address no atm ilmi-keepalive interface ATM0/0.1 Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers OL-3317-03...

  • Page 26

    It is recommended that IP CEF be turned on. IP CEF will result in better performance and ease of configuration. • Virtual template (VT) should be used (instead of dialer interface) when configuring either authentication or dynamic address assignment for MLP with LFI. Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers OL-3317-03...

  • Page 27

    For information on how to verify and troubleshoot MLP Bundling, please refer to Enhanced Voice and QoS for ADSL and G.SHDSL on Cisco 1700 Series, Cisco 2600 Series, and Cisco 3600 Series Routers. Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers...

  • Page 28: Configuring The Scc Clock Rate

    8 Mbps (8000000 bps). Note When an SCC clock rate is deconfigured on a Cisco 1700 series router by using the no form of the command, it is reset to the default value of 8 Mbps. SCC Clock Rate Verification To verify the configuration of the SCC clock rate, use the show controller command.

  • Page 29: Configuring Frf.5 And Frf.8 Internetworking Functions

    FRF.5 and FRF.8 internetworking functions, refer to Enhanced Voice and QoS for ADSL and G.SHDSL on Cisco 1700 Series, Cisco 2600 Series, and Cisco 3600 Series Routers. For FRF.5 and FRF.8, you may need to match the maximum transmission unit (MTU) between the ATM Note and Frame Relay networks for large size packets.

  • Page 30: Obtaining Documentation

    Obtaining Documentation These sections explain how to obtain documentation from Cisco Systems. World Wide Web You can access the most current Cisco documentation on the World Wide Web at this URL: http://www.cisco.com Translated documentation is available at this URL: http://www.cisco.com/public/countries_languages.shtml...

  • Page 31: Obtaining Technical Assistance

    We appreciate your comments. Obtaining Technical Assistance Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain online documentation, troubleshooting tips, and sample configurations from online tools by using the Cisco Technical Assistance Center (TAC) Web Site. Cisco.com registered users have complete access to the technical support resources on the Cisco TAC Web Site.

  • Page 32

    Cisco TAC Web Site You can use the Cisco TAC Web Site to resolve P3 and P4 issues yourself, saving both cost and time. The site provides around-the-clock access to online tools, knowledge bases, and software. To access the Cisco TAC Web Site, go to this URL: http://www.cisco.com/tac...

  • Page 33

    Cisco Systems, Inc.; and Access Registrar, Aironet, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity,...

  • Page 34

    Obtaining Technical Assistance Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers OL-3317-03...

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