Zyxel VES-1624FT-55A Инструкция по эксплуатации онлайн [37/312] 154555

Zyxel VES-1624FT-55A Инструкция по эксплуатации онлайн [37/312] 154555
Chapter 1 Introducing the IP DSLAM
VES-1624FT-55A User’s Guide
37
IP Protocols
IP Host (No routing)
Telnet for configuration and monitoring
SNMP for management
SNMP MIB II (RFC 1213)
SNMP v1 RFC 1157
SNMPv2, SNMPv2c or later version
Bridge MIBs (RFC 1493, 2674)
SMI RFC 1155
•Private MIBs
RFC 3728 VDSL MIB
VDSL2 to ADSL2+ Fall Back
The IP DSLAM provides ADSL2+ fall back feature in addition to the VDSL2 PTM (Packet
Transmission Mode) service. With ADSL2+ fall back turned on, the IP DSLAM can detect an
ADSL modem connected to a subscriber line. Then the IP DSLAM switches the operation
mode of the corresponding port to ADSL2+ and establishes the corresponding connection ser-
vice. This helps Telco operators to provide differentiating services (ADSL service can coexist
with VDSL service on the same subscriber line) using a single DSLAM. At the time of writ-
ing, the IP DSLAM supports the following features.
• ADSL2+ fall back
• Bi-directional AAL5 ATM VCs
• PPPoA and IPoA/IPoE
• PVC to VLAN mapping
Refer to ITU-T G.992.1, G.992.3 and G.992.5 for more information.
IEEE 802.1Q Tagged VLAN
Your management IP DSLAM card uses the IEEE 802.1Q Tagged VLAN (Virtual Local Area
Network), which allows your device to deliver tagged/untagged frames to and from its ports.
IEEE 802.1p Priority
Your IP DSLAM uses IEEE 802.1p Priority to assign priority levels to individual PVCs.
IGMP Count Limit
You can limit the number of IGMP groups a subscriber on a port can join. You may enable/
disable the IGMP count limit on individual ports.
Static Multicast
Use static multicast to allow incoming frames based on multicast MAC address(es) that you
specify. This feature can be used in conjunction with IGMP snooping and IGMP proxy to
allow multicast MAC address(es) that are not learned by IGMP snooping or IGMP proxy.

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