Справочник Пользователя для Avaya X330WAN
Chapter 1
Introduction
4
Avaya X330WAN User’s Guide
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Weighted Random Early Detection (WRED)
- X330WAN uses WRED on its
ingress and egress queues in order to improve the performance of the network
when overloaded. The purpose of WRED is to indicate to transmitting hosts to
reduce their transmission speed when the ingress X330WAN queues are
congested. For more detailed information, refer to "Frame Relay Encapsulation"
on page 46.
when overloaded. The purpose of WRED is to indicate to transmitting hosts to
reduce their transmission speed when the ingress X330WAN queues are
congested. For more detailed information, refer to "Frame Relay Encapsulation"
on page 46.
•
Policy -
Each Serial interface, the Fast Ethernet port, and the FabricFastEthernet
interface can have an ingress and egress active Policy list. X330WAN can
enforce QoS Policy on routed packets and change their 802.1p priority,
according to the packet characteristics.
X330WAN allows changing the DSCP value in the IP header of a packet based
on packet characteristics (DSCP coloring).
In addition, X330WAN supports Access Control policies that define which
packets should be forwarded or denied access to the network. For more detailed
information, refer to "Policy" on page 48.
enforce QoS Policy on routed packets and change their 802.1p priority,
according to the packet characteristics.
X330WAN allows changing the DSCP value in the IP header of a packet based
on packet characteristics (DSCP coloring).
In addition, X330WAN supports Access Control policies that define which
packets should be forwarded or denied access to the network. For more detailed
information, refer to "Policy" on page 48.
•
RTP Header Compression
- X330WAN saves up to 60% of the bandwidth
necessary using RTP compression. It also enhances the efficiency of voice
transmission over the network by compressing the headers of Real Time
Protocol (RTP) packets, thereby minimizing the overhead and the delays
involved in RTP implementation. For more detailed information, refer to "RTP
Header Compression (cRTP)" on page 53.
transmission over the network by compressing the headers of Real Time
Protocol (RTP) packets, thereby minimizing the overhead and the delays
involved in RTP implementation. For more detailed information, refer to "RTP
Header Compression (cRTP)" on page 53.
Sample Applications
The primary uses of the X330WAN are:
•
•
Branch Office connectivity to Headquarters.
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Small/Medium Business connectivity directly to an ISP (Internet Service
Provider).
Provider).
For illustrations and configuration examples of common applications, refer to
Chapter 4: Operational Concepts and Configuration Examples.
Chapter 4: Operational Concepts and Configuration Examples.
Branch Office Connectivity to Headquarters
X330WAN enables connecting branch office LANs, based on the P330 switch, to a
central office to access the corporate WAN. Each branch office in this solution is
connected to the headquarters office via a leased line or Frame Relay service, and
therefore uses the Internet services supplied via the headquarters ISP. The branch
office can also connect directly to the Internet, independent of the headquarters
office.
Installing an X330WAN Access Router in an Avaya G700 Media Gateway provides
cost-effective and space-saving IP Telephony and WAN routing for SMEs
(Small/Medium Enterprises).
central office to access the corporate WAN. Each branch office in this solution is
connected to the headquarters office via a leased line or Frame Relay service, and
therefore uses the Internet services supplied via the headquarters ISP. The branch
office can also connect directly to the Internet, independent of the headquarters
office.
Installing an X330WAN Access Router in an Avaya G700 Media Gateway provides
cost-effective and space-saving IP Telephony and WAN routing for SMEs
(Small/Medium Enterprises).