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 Chapter 1 Introducing the ALC1248G

ALC1248G User’s Guide

15

Multicast VLAN  

Multicast VLAN is designed for applications (such as Media-on-Demand (MoD)) using 
multicast traffic across an Ethernet ring-based service provider network. Multicast VLAN 
allows one single multicast VLAN to be shared among different subscriber VLANs on the 
network. This improves bandwidth utilization by reducing multicast traffic in the subscriber 
VLANs and simplifies multicast group management.

IEEE 802.1x Port-based Authentication

The ALC supports the IEEE 802.1x standard for centralized user authentication and 
accounting management through an optional network authentication (RADIUS) server. 

Port Isolation

The ALC's port isolation feature allows each port to communicate with the uplink port but not 
communicate with each other. This option is the most limiting but also the most secure.

Isolation (per-VLAN)

Use isolation to block the DSL subscribers in a specific VLAN from sending traffic directly to 
each other. 

Packet Filter

The ALC supports packet filtering based on protocol. You can configure the ALC to accept all 
packets, accept PPPoE packets only or block any combination of the following protocols: IP, 
ARP, DHCP, EAPOL, PPPoE, NetBios or IGMP. 

MAC (Media Access Control) Filters 

Use the MAC filter to filter incoming frames based on MAC (Media Access Control) 
address(es) or the OUI (Organizational Unit Identifier) that you specify. You may enable/
disable the MAC filter on specific ports. You may specify up to ten MAC addresses per port.

MAC (Media Access Control) Count Limit

You can limit the number of MAC addresses that may be dynamically learned on a port. You 
may enable/disable the MAC count limit on individual ports.

IGMP Snooping 

The ALC supports IGMP snooping enabling group multicast traffic to be only forwarded to 
ports that are members of that group; thus allowing you to significantly reduce multicast 
traffic passing through your ALC.  

IGMP Filter

The IGMP filter defines multicast groups a port can join. You can create IGMP filter profiles 
which allow access to a multicast group, then assign the IGMP filter to a specific DSL port. 

Multicast Group Limit

You can limit the number of IGMP multicast groups a subscriber on a port can join. You may 
enable/disable the multicast group limit on individual ports.

Summary of Contents for ALC1248G

Page 1: ...www zyxel com ALC1248G ADSL2 2 Line Card User s Guide Version 3 90 3 2008 Edition 1...

Page 2: ......

Page 3: ...C1000G and MSC1024G Management Switch Card User s Guides These user s guides cover the configuration of your IES 5000 or IES 6000 Refer to these user s guides for information on your ALC s default set...

Page 4: ...ystem including the main chassis and all associated cards MSC refers to the MSC1000G or MSC1024G management switch card Product labels screen names field labels and field choices are all in bold font...

Page 5: ...s or other risks ONLY qualified service personnel should service or disassemble this device Please contact your vendor for further information Make sure to connect the cables to the correct ports Plac...

Page 6: ...Safety Warnings ALC1248G User s Guide 6...

Page 7: ...5 1 Ports 18 1 5 2 LEDs 19 1 6 Default Settings 19 Chapter 2 Product Specifications 21 2 1 Product Specifications 21 2 2 Firmware Naming Conventions 23 2 3 Telco 50 Connector Pin Assignments 24 2 4 W...

Page 8: ...Table of Contents ALC1248G User s Guide 8 Appendix A Legal Information 35 Appendix B Customer Support 39 Index 45...

Page 9: ...nts 24 Figure 4 IES 5000 5005 Cable Telco 50 Pin Assignments ALC End 25 Figure 5 IES 5000 5005 Cable Telco 50 Pin Assignments Splitter Card End 26 Figure 6 IES 6000 Cable Telco 50 Pin Assignments ALC...

Page 10: ...List of Figures ALC1248G User s Guide 10...

Page 11: ...fications 21 Table 5 Supported Standards 22 Table 6 ALC Telco 50 Connector Pin Assignments 24 Table 7 Wire Gauge Specifications 27 Table 8 Console Cable Connector Pin Assignments 28 Table 9 SYS LED Tr...

Page 12: ...List of Tables ALC1248G User s Guide 12...

Page 13: ...nd signal is diverted to the central office switch or PBX Private Branch Exchange Use the Telco 50 connector pin assignments in Section 2 3 on page 24 along with the directions and safety warnings in...

Page 14: ...link status rates statistics counters Temperatures voltage reports and alarms System Error Logging The ALC s system error log will record error logs locally These logs may be viewed again after a war...

Page 15: ...n protocol You can configure the ALC to accept all packets accept PPPoE packets only or block any combination of the following protocols IP ARP DHCP EAPOL PPPoE NetBios or IGMP MAC Media Access Contro...

Page 16: ...LC supports static bandwidth control for multicast traffic Bandwidth limits can be assigned to multicast channels During IGMP snooping the system checks the total bandwidth usage to see if it exceeds...

Page 17: ...d fluctuations of data transmission This helps eliminate congestion to allow the transmission of real time data such as audio and video Priority based PVCs The system provides Priority based PVCs PPVC...

Page 18: ...e and so on Single End Loop Test SELT This feature checks the distance to an ADSL subscriber s location Double End Loop Test DELT This feature also called a Loop Diagnostic Mode test or LDM test provi...

Page 19: ...on default settings Table 3 LED Descriptions LED COLOR STATUS DESCRIPTION PWR Green On The line card is turned on Off The line card is off SYS Green Blinking The line card is rebooting and performing...

Page 20: ...Chapter 1 Introducing the ALC1248G ALC1248G User s Guide 20...

Page 21: ...onsole port for local management MAC Address Table Up to 16K entries Max Number of IGMP Filter Profiles 128 Operation Temperature 40 C 65 C Storage Temperature 40 C 70 C Operation Humidity 10 90 RH no...

Page 22: ...Message Rate Limiting IEEE 802 1Q VLAN Tagging GVRP IEEE 802 1p CoS with Priority Queuing IEEE 802 1w RSTP IEEE 802 1s MSTP IGMP v1 v 2 Snooping DHCP Relay Option82 DHCP Snooping IEEE 802 1x Port base...

Page 23: ...entication Protocol EAP RFC 2684 LLC and VC MUX Bridging IEEE 802 1d Transparent Bridging IEEE 802 1p Layer 2 Traffic Prioritization IEEE 802 1Q Virtual Local Area Network VLAN IEEE 802 1x Network Aut...

Page 24: ...Telco 50 Connector Pin Assignments PORTS 1 24 FIRST TELCO 50 CONNECTOR PORTS 25 48 SECOND TELCO 50 CONNECTOR Pin 1 NULL Pin 26 NULL Pin 1 NULL Pin 26 NULL Pin 2 Ring Port 24 Pin 27 Tip Port 24 Pin 2 R...

Page 25: ...Ring Port 36 Pin 39 Tip Port 36 Pin 15 Ring Port 11 Pin 40 Tip Port 11 Pin 15 Ring Port 35 Pin 40 Tip Port 35 Pin 16 Ring Port 10 Pin 41 Tip Port 10 Pin 16 Ring Port 34 Pin 41 Tip Port 34 Pin 17 Ring...

Page 26: ...Chapter 2 Product Specifications ALC1248G User s Guide 26 Figure 5 IES 5000 5005 Cable Telco 50 Pin Assignments Splitter Card End Figure 6 IES 6000 Cable Telco 50 Pin Assignments ALC End...

Page 27: ...G American Wire Gauge is a measurement system for wire that specifies its thickness As the thickness of the wire increases the AWG number decreases 2 5 Console Cable Pin Assignments The following diag...

Page 28: ...Chapter 2 Product Specifications ALC1248G User s Guide 28 Figure 8 Console Cable Mini RJ 11 Male Connector Table 8 Console Cable Connector Pin Assignments MINI RJ 11 MALE Pin 2 TXD Pin 3 RXD Pin 4 GND...

Page 29: ...Power and LEDs V The SYS or PWR LED does not turn on V The ALM LED is on Table 9 SYS LED Troubleshooting STEPS CORRECTIVE ACTION 1 Make sure the power wires are properly connected to the power supply...

Page 30: ...e exhaust of other equipment 3 If the voltage levels are outside the allowed range take a screen shot of the sys monitor status command display and contact your vendor Table 11 DSL Data Transmission T...

Page 31: ...Troubleshooting STEPS CORRECTIVE ACTION 1 Refer to Section 3 2 on page 30 to make sure that the subscriber is able to transmit to the line card 2 Make sure the computer behind the DSL device has the...

Page 32: ...guration file unzip it and save it in a folder Use a console cable to connect a computer with terminal emulation software to the line card s console port Pull out the line card and push it back in you...

Page 33: ...age press a key to enter debug mode 5 Type atba5 after the Enter Debug Mode message this changes the console port speed to 115200 bps 6 Change the configuration of your terminal emulation software to...

Page 34: ...32M Hardware Version Serial Number RAM Size 133120 Kbytes ZyNOS Version V3 50 ABE 0 b3 05 11 2005 11 56 26 Press any key to enter debug mode within 3 seconds Enter Debug Mode atba5 Now console speed w...

Page 35: ...tware described herein Neither does it convey any license under its patent rights nor the patent rights of others ZyXEL further reserves the right to make changes in any products described herein with...

Page 36: ...y to operate the equipment This Class A digital apparatus complies with Canadian ICES 003 Cet appareil num rique de la classe A est conforme la norme NMB 003 du Canada Viewing Certifications 1 Go to h...

Page 37: ...purpose ZyXEL shall in no event be held liable for indirect or consequential damages of any kind to the purchaser To obtain the services of this warranty contact your vendor You may also refer to the...

Page 38: ...Appendix A Legal Information ALC1248G User s Guide 38...

Page 39: ...and the steps you took to solve it is the prefix number you dial to make an international telephone call Corporate Headquarters Worldwide Support E mail support zyxel com tw Sales E mail sales zyxel c...

Page 40: ...cz Regular Mail ZyXEL Communications Czech s r o Modransk 621 143 01 Praha 4 Modrany Cesk Republika Denmark Support E mail support zyxel dk Sales E mail sales zyxel dk Telephone 45 39 55 07 00 Fax 45...

Page 41: ...E mail sales zyxel in Telephone 91 11 30888144 to 91 11 30888153 Fax 91 11 30888149 91 11 26810715 Web http www zyxel in Regular Mail India ZyXEL Technology India Pvt Ltd II Floor F2 9 Okhla Phase 1...

Page 42: ...32 0858 Web www zyxel com Regular Mail ZyXEL Communications Inc 1130 N Miller St Anaheim CA 92806 2001 U S A Norway Support E mail support zyxel no Sales E mail sales zyxel no Telephone 47 22 80 61 80...

Page 43: ...ta 28033 Madrid Spain Sweden Support E mail support zyxel se Sales E mail sales zyxel se Telephone 46 31 744 7700 Fax 46 31 744 7701 Web www zyxel se Regular Mail ZyXEL Communications A S Sj porten 4...

Page 44: ...pport E mail support ua zyxel com Sales E mail sales ua zyxel com Telephone 380 44 247 69 78 Fax 380 44 494 49 32 Web www ua zyxel com Regular Mail ZyXEL Ukraine 13 Pimonenko Str Kiev 04050 Ukraine Un...

Page 45: ...ion Protocol 16 DHCP Relay Option82 16 DHCP snooping 16 disclaimer 35 double tagged frames 17 E error log 17 F FCC interference statement 35 features 14 filter protocols 15 filter packet 15 front pane...

Page 46: ...related documentation 3 S safety warnings 5 standards supported 22 static multicast 16 switch lockout 31 syntax conventions 4 SYS LED 29 system error log 17 T Telco 50 connector pin assignments 27 Tel...

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