Broadband Functions - ZXMSG 5200 Product Description

3 Functionality

3.2 Broadband Functions

This section describes the broadband functions of ZXMSG 5200.

3.2.1 XDSL Features

This section describer XDSL features of ZXMSG5200.

• ADSL features

− Comply with ITU-T G.992.1, G.992.2, ANSI T1.413 issue 2 and ITU-T G.996.1

− Asymmetric transmission mode. The uplink rate is 1 Mbps and downlink rate is 8 or 9 Mbps.

− Perform line capture for each ADSL user line so that external test equipment performs a line test.

− Support adaptive rate for actual lines.

− Support fixed settings of actual line rates.

− Support good interworking between ADSL modems adopting major stream chips such as Connexant, BCM, and TI.

− Remote maintenance and remote software upgrade.

− Line alarm maintenance and message report function.

• ADSL2+ features

− ADSL2/ADSL2+ is compatible with G.992.3 (ADSL2), G.992.4 (Splitterless ADSL2) and G.992.5 (ADSL2+)

− ADSL2+ supports those operation modes: annex A, annex B, annex C, annex I, annex J and annex M

− ADSL2+ provides 24 Mbps downstream and 1 Mbps upstream. If ADSL2 annex J is used, the uplink rate is increased to 2.3 Mbps

− Support the SELT function (single-ended test)

− Support the DELT function (dual-ended test)

− Support energy-saving characteristics

− Support seamless rate adaptation (SRA) function

− The ADSL2+ supports fast start mode. The line synchronization time is less than 3 seconds.

− Support 1-bit constellation modulation function.

− Support good interworking between ADSL2+ modems adopting major stream chips such as Connexant, BCM, and TI.

− Bit switching

− Pilot channel floating

− Support multi copper pair bonding as defined by ITU-T G.998.1 for ATM based multi bonding

• VDSL2 features

− VDSL2 Comply with ITU G.993.2, G.997.1, G994.1 standard and backward compatible with ITU G.992.1, G.992.3, G.992.5 standard

− Support profiles of 8a, 8b, 8c, 8d, 12a, 12b, 17a and 30a

− Perfect PSD control,

− DMT modulation and demodulation

− Support STM and IEEE802.3ah PTM mode.

− RFI Notching and Custom PSD

− UPBO (Upstream Power Back Off)

− DPBO (Downstream Power Back Off)

− Dual latency

− Support multi copper pair bonding as defined by ITU-T G.998.1 for ATM based multi bonding and ITU-T G.998.2 for Ethernet based multi bonding.

− Support ATM mode and backward compatible with ADSL/ADSL2+

− Maximum downlink rate at 100Mbps and uplink rate at 100Mbps

− Support the SELT function (single-ended test)

− Support the DELT function (dual-ended test)

− Support 1~15 bit constellation modulation function

− Support Impulse Noise Protection (Up to 16 symbol)

−

• SHDSL features

− Comply with ITU-T G.991.2 and ANSI T1E1.4/2001-174 standards

− A single line pair of SHDSL support integer multiple of all 64kbps rates between 192Kbps and 2.3Mbps for uplink and downlink transmission. For two pairs of twisted pairs, the rate is between 384 kbps to 4.6 Mbps.

− The synchronization time is less than 60 seconds.

• SHDSL.bis features

− Comply with ITU-T G.991.2, ITU-T G.991.2 (2004) (G.SHDSL.BIS), ETSI TS 101 524 V 1.2.1, and ETSI TS 101 524 V 1.2.2 standards

− Support TCPAM 16 and TCPAM32

− Support ATM G.SHDSL, transmission rates from 192 kbps to 2.3 Mbps (one pair) or 384 kbps to 4.6 Mbps (2-pairs)

− Support G.SHDSL.bis

− Support G.SHDSL.bis M-pair bonding, up to 4-pairs. Transmission rate up to 5.69 Mbps on 2-wire, 11.38 Mbps on 4-wire, and 22.76 Mbps on 8-wire.

3.2.2 xPON features

This section describer xPON features of ZXMSG5200.

• EPON features

− Comply with IEEE 802.3-2005 standards

− Single PON port supports 32 branches (20 KM) and 64 branches (<5 KM).

− Downlink wavelength is 1490 nm, uplink wavelength is 1310 nm and CATV wavelength is 1550 nm.

− Downlink rate can reach up to 1.25 Gbps. The uplink transmits data stream in Ethernet packet mode and reaches up to 1.25 Gbps.

− Support MPCP

− Perfect DBA functions

− Voice, data and video services

− Operation, maintenance and management functions

• GPON features

− Comply with ITU-T G.984 series standards

− Support CLASS B+ (28db)

− The GPOI board supports 4 GPON interfaces. The upstream rate and the downstream rate are 1.244Gbps and 2.488Gbps

− Support G.984.4 OMCI stack

− Support the functions of dynamical discovery, auto-registration and dynamical ranging to ONU/ONT

− Perfect DBA functions

− Support IGMP snooping, each PON supports 1k multicast groups

− Support DHCP option82

− Support AES-128 downstream encryption

− Support FEC

− Perfect OAM functionality.

3.2.3 Ethernet features

This section describer Ethernet features of ZXMSG5200.

• Comply with IEEE 802.3 standard

• 100 Mbps Fast Ethernet

• 1000 Mbps Gigabit Ethernet

• 10,000 Mbps Gigabit Ethernet ( uplink )

3.2.4 ATM features

This section describer ATM features of ZXMSG5200.

• Comply with TM4.1/I.371 standards

• Support CBR/VBR-rt/VBR-nrt/UBR/UBR+ services

• Support vlan services based on ATM pvc

• ATM OAM function

3.2.5 IMA features

This section describer IMA features of ZXMSG5200.

• Comply with AF-PHY-0086.001

• IMA group with E1 interface

3.2.6 PWE3 features

This section describer PWE3 features of ZXMSG5200.

• Comply with RFC 3916, RFC 3985, RFC 4197, RFC 4447, RFC 4553, ITU-T Y.1413 standards

• Support E1/T1 over SAToP (RFC4553)

• Support CESoPSN (RFC5086)

• Support PWE3 over Ethernet

• Support PWE3 over UDP

• Support PWE3 over MPLS

• Support PWE3 over L2TPv3

• Support PWE3 Control Word(RFC4385)

• Support static PWE3 tunnel

• Support PWE3 label distribution using LDP(RFC4447)

3.2.7 L2 Features

This section describer L2 features of ZXMSG5200.

• L2 switch based on VLAN+MAC, based on L2 switching according to IEEE 802.3

• MAC Address Learning and Address aging automatically, Support view the MAC address table in the switching chip

• Port MAC Address Limit Function

• Virtual Mac

• Logical Port Broadcast Switch

• Broadcast/multicast limit function

• VLAN, Port-Based VLAN Meeting IEEE802.1Q Standards

• SVLAN (QinQ), includes VLAN stacking and double-tag

• PVLAN ensure L2 isolation in the same VLAN, based on port for user isolation

• 1:1 VLAN. support a downstream mapping between S-VLAN and C-VLAN pair and port, and be able to disable MAC address learning for 1:1 VLANs

• Protocol based VLAN to address different services on a single user port,

• TRUNKING/LACP, provide the TRUNKING function for one to eight ports and support LACP.

• STP/RSTP/MSTP, support the STP protocol and follow the IEEE802.1D/D17 1998 standard

• Port enabling control, support subscriber port enabling control to provide a basis for user management.

• Flow control function under Full-/Half-Duplex Mode at Ethernet Port. The system coordinates the rate of the data frame from the opposite side by sending a PAUSE control frame to set flow control status for an Ethernet port.

• VBAS Protocol, Support backward learning for MAC addresses by BAS

3.2.8 L3 Features

This section describer L3 protocol features of ZXMSG5200.

• IPv4 Protocol Stack

− ICMP PING

− TraceRoute

− ARP/Proxy ARP/Static ARP/RARP

− Super VLAN

− FTP Client/TFTP Client

− DHCP Server/DHCP Relay/DHCP Proxy

− TCP/UDP

− Telnet Server/Telnet Client

− SSHv1/v2

− RADIUS Client

− TACACS+ Client

− SNMP V2

− BOOTP

− NTP

− DNS

− RSVP

• IPv4 Routing

− Static Routing

− RIPv1/v2

− OSPFv2

− ISIS

− BGPv4

• IPv4 Multicast Routing

− IGMPv1/v2

− PIM-SM and PIM-DM

3.2.9 IPTV Features

ZXMSG5200 perfectly supports IPTV service through:

• IGMP V1/V2/V3

• IGMP proxy, acts as IGMP router/host

• IGMP snooping, snoops IGMP protocol communication, and copies and transmits message packets to CPU for analyzing

• Multicast VLAN, support up to 4 Multicast VLANs

• Multicast channel access control (CAC) supports controlling users’ multicast access rights.

• Multicast channel preview (PRV) supports permitting users to view some channel contents before they order these channels

• Multicast channel call detail record (CDR) supports recording the channel access activities of each user automatically.

• Multicast service management system (SMS) supports managing the channel access right setting and update, CDR records forwarding and providing interfaces to OSS.

• Fast Leave enabling/disabling functionality supports permitting/forbidding user to quickly leave a multicast channel for another channel.

• Multicast channel pre-join functionality supports preliminary join of multicast channel in MSAN, even though no user apply this channel

• Group user limitation functionality limits the number of the multicast groups joined concurrently from user requests

• Multicast sources guard, the user's port is forbidden acting as multicast server

• Multicast service enabling/disabling functionality can be done based on the whole system or per user port.

• Suppressing illegal multicast packets functionality supports controlling some illegal multicast packets and dropping them.

• Channel package is a collection of some multicast channels with different access rights, and it can be applied into any user port.

• Support 1024 multicast IPTV channels.

3.2.10 QoS

This section describes the QoS features of ZXMSG5200.

• Traffic classification, support traffic classification based on port, PVC, VLAN/SVLAN, IEEE802.1p CoS and Ethernet type ( e.g. IPoE, ARP, RARP), MAC address, IP address, IP type, DSCP priority and TCP/UDP port. The classification engine extracts the 32 bytes in the first 80 bytes information of the packet header.

• Network-side support 8 queues

• User-side support 8 queues

• Rate limitation, support traffic-based rate limitation on user port and Ethernet uplink port, upstream and downstream, based port/VLAN/COS,

• Queue scheduling algorithm, SP, WRR or SP and WRR mix

• COS to DSCP mapping

• DSCP to COS mapping

• 802.1p priority（COS）mapping to Queues

• Priority setting based on port, includes default 802.1p and forced 802.1p setting based on port

• Priority setting based on PVC, include default PRIO, trusted PRIO, forced C-PRIO, C-PRIO remarking, forced S-PRIO setting based on PVC

• Trust or un-trust 802.1p per port, trust 802.1p of ingress packets and transfer them transparently, or un-trust 802.1p of ingress packets and modify the 802.1p value.

• Traffic policy and metering

• Traffic marking, modify DSCP or 802.1P field

• Congestion avoidance: ED/RED/WRED

• Traffic shaping

• Differentiate service from CPE

− According to multiple PVC,

− According to 802.1P in one PVC

− According to VLAN ID in one PVC

3.2.11 Security Features

This section describes the security features of ZXMSG5200.

• Broadcast/multicast handling, limiting the rate of broadcast and multicast storms in the upstream and downstream on a per port basis (user port and Ethernet uplink port)

• Static MAC address

• MAC address filtering, include source MAC or destination MAC filter, which can allow/deny the access from/to special devices.

• User ports source IP bounding and source MAC bounding

• MAC address flooding, limit the number of source MAC learned from a given bridged port in order to prevent the source MAC flooding attacks.

• MAC address spoofing and IP address spoofing.

• MAC Forced Forwarding

• Broadcast supervision per VLAN

• PPPoE、PPPoA、IPoE、IPoA auto sensing function on a per port basis.

• PPP/DHCP Filtering

• DHCP snooping, DHCP snooping is a DHCP security feature that provides security by filtering un-trusted DHCP messages and by building and maintaining a DHCP snooping binding table. An un-trusted message can be received from outside the network or firewall and that can cause traffic attacks within the network.

• DHCP source guard. DHCP source guard prevents IP spoofing by allowing only the IP addresses that are obtained through DHCP snooping on a particular port. This filtering limits the ability of a host to attack the network by claiming a neighbor host's IP address.

• DHCP rate limit, avoid the DHCP attack from untrusty user

• DHCP relay which is L2 relay

• IGMP Rate limit

• Port Mirroring

• Packet filter/ACL, based on L2,L3 and L4 related information

• Port isolation, PVLAN ensure L2 isolation in the same VLAN

• Hitless-Failover. Packet Forwarding be maintained within 50ms during Primary Control Module failover and Redundant Control Module takes over

3.2.12 Maintainability Features

ZXMSG5200 also ensures system security for maintenance through:

• ACL for management, permit or deny special IP packets accessing the system.

• Security log, record any activities on configuration

• Traffic limitation for CPU interface keep CPU in easy state to handle other things

• User and password management provide the authentication of the user who want to login, the authentication can be local or remote.

• Remote upgrade and restart

• Configurable IP/MAC of inband/outband management

• NTP protocol

• Backup for version ensures the security and reliability of the version

• SSH v1/v2, and radius client support

• SELT/DELT

• ATM OAM loop back test

− F4 segment and end-to-end

− F5 segment and end-to-end

− Bi-directional

• Modem remote management. TELNET, HTTP and SNMP for modem remote management. This functionality can obtain the running information of modem, configure parameters of modem and test network link status, especially at troubleshooting a modem failure.

• Ethernet OAM conform to ITU-T Y.1731: OAM Functions and Mechanisms for Ethernet Based Networks and IEEE 802.1ag

• Alarm and statistic in case of port rate less than threshold

• Output interface for audible and visual alarm

3.2.13 User Access & Port Identification

ZXMSG5200 support user access protocol

• IPoE/PPPoE

• IPoA/PPPoA

• PPPoA to PPPoE conversion

ZXMSG5200 supports user port identification to trace and locate illegal users through:

• VBAS

• DHCP Option82

• PPPoE intermediate

• Stacking VLAN

In document ZXMSG 5200 Product Description (Page 25-37)