ZyXEL Communications VES-1000 Series, Руководство пользователя, Страница: 22 / 227

VES-1000 Series Ethernet Switch
1-2 Getting to Know Your VES
STP (Spanning Tree Protocol)
STP detects and breaks network loops and provides backup links between switches, bridges or routers. It allows a
device to interact with other STP-compliant devices in your network to ensure that only one path exists between
any two stations on the network.
IGMP Snooping
With IGMP snooping, group multicast traffic is only forwarded to ports that are members of that group. IGMP
Snooping generates no additional network traffic, allowing you to significantly reduce multicast traffic passing
through your switch.
VDSL Modes and Rates
The VES supports the following DSLAM VDSL modes. VDSL mode can be set per port.
•
10Base-S giving upstream rates from 1.56 Mbps to 18.75 Mbps and downstream rates of 4.17 Mbps
Kbps to 16.67 Mbps.
•
ANSI Mode giving upstream rates from 1.56 Mbps to 6.25 Mbps and downstream rates of 4.17 Mbps
to 16.67 Mbps.
•
ETSI Mode giving upstream rates from 1.56 Mbps to 6.25 Mbps and downstream rates of 4.17 Mbps
to 12.50Mbps.
•
SPECIAL MODE giving upstream rates from 0.78 Mbps to 18.75 Mbps and downstream rates of 0.78
Mbps to 16.66 Mbps
IP Protocols
•
IP Host (No routing)
•
SNMP for management
SNMP V1 (RFC 1157)
Ethernet MIBs for Ethernet and VDSL ports (RFC-1213)
Bridge MIB (RFC-1493)
Bridge Extension MIBs (RFC 2674)
•
Telnet for configuration and monitoring
Management
•
Command-line interface
•
Telnet
•
SNMP
System Monitoring
•
System status (link status, rates, statistics counters)
•
Telnet, SNMP for configuration and monitoring
•
Temperatures, voltage, fan speed reports (VES-1012 only) and alarms.