Cabletron Systems CSX100 series, Руководство пользователя, Страница: 112 / 153

ISDN Router 98
Dial-on-Demand
Dial-up WAN resources are accessed only when remote access is required and
released as soon as the resource is no longer needed.
Bandwidth-on-Demand
The router can optimize the use of WAN resources (i.e., two ISDN B-
channels) to increase throughput, depending on load requirements. Two
ISDN B-channels can be “bundled” to permit transmission of data traffic over
both channels after a link utilization threshold is reached. The second
channel is released when utilization falls below the threshold. Support
includes both routing and bridging applications. Bandwidth-on-Demand
management can occur on incoming, outgoing, or both directions. The
Multi-Link Protocol for PPP (MLP) is used to implement this feature.
Split B-Channels
Each 64Kbps ISDN B-channel can be used individually for a separate data
connection.
POTS Analog Line Interface
The router software support for local analog phone devices provides
emulation of central office voice services to control the analog lines. Call
progress tones and DTMF are supported. Only one line can dial at a time; the
other line can have an established call in progress while the second line is
dialing.
Simple Network Management Protocol (SNMP)
The router provides SNMP agent support and support for standard as well as
Enterprise Specific MIBs. SNMP is also used internally for configuration of
the router. The active SNMP agent within the router accepts SNMP requests
for status, statistics, and configuration updates. Communication with the
SNMP agent occurs over the LAN or WAN connection. Any management
application using SNMP over UDP/IP (User Datagram Protocol/Internet
Protocol) has access to the local SNMP agent.