Chapter 6 Basic Setting
OMC-2301 User’s Guide
64
Figure 20
IGMP Proxy Network Example
The system will not respond to IGMP join and leave messages on the upstream interface. The
system only responds to IGMP query messages on the upstream interface. The system sends
IGMP query messages to the hosts that are members of the query VLAN.
The system only sends an IGMP leave messages via the upstream interface when the last host
leaves a multicast group.
The Ethernet port on the line card acts as the upstream interface. By default, the PON port is
set as a downstream interface.
"
The OLT does not allow a PON port to send multicast traffic (except static
multicast traffic) to an uplink port. Only the uplink port can forward multicast
traffic to the PON port.
6.7 DBA (Dynamic Bandwidth Allocation)
In an EPON network, to prevent network congestion, dynamic bandwidth allocation allows
the OLT to quickly re-assign unused bandwidth based on traffic requirements. The OLT
periodically broadcasts discovery messages to all ONUs. The ONUs then can register and send
report messages to request bandwidth for data transmission. The OLT bases on the registered
ONU’s RTT (Round Trip Time) and bandwidth request to decide when and how long the ONU
can transmit data. Bandwidth re-assignment can be for an ONU or for the priority-level
queues. In addition to reassigning bandwidth on the go, DBA helps to ensure quality of service
on the network.
"
A PON port allows only one ONU to transmit data at a time.
A
1
2
3
Содержание OMC-2301
Страница 1: ...www zyxel com OMC 2301 GEPON OLT Management Card User s Guide Version 3 60 11 2007 Edition 1...
Страница 2: ......
Страница 7: ...Safety Warnings OMC 2301 User s Guide 7...
Страница 8: ...Safety Warnings OMC 2301 User s Guide 8...
Страница 10: ...Contents Overview OMC 2301 User s Guide 10...
Страница 18: ...Table of Contents OMC 2301 User s Guide 18...
Страница 22: ...List of Figures OMC 2301 User s Guide 22...
Страница 25: ...25 PART I Introduction Introducing the OMC 27 Hardware 31...
Страница 26: ...26...
Страница 30: ...Chapter 1 Introducing the OMC OMC 2301 User s Guide 30...
Страница 34: ...Chapter 2 Hardware OMC 2301 User s Guide 34...
Страница 36: ...36...
Страница 46: ...Chapter 4 Initial Setup Example OMC 2301 User s Guide 46...
Страница 50: ...Chapter 5 System Status and Port Statistics OMC 2301 User s Guide 50 Figure 14 Status EPON Info EPON Details...
Страница 51: ...Chapter 5 System Status and Port Statistics OMC 2301 User s Guide 51...
Страница 78: ...78...
Страница 82: ...Chapter 7 Classifier Filter Profile OMC 2301 User s Guide 82...
Страница 92: ...Chapter 8 VLAN Profile OMC 2301 User s Guide 92...
Страница 100: ...Chapter 10 Static MAC Forward Setup OMC 2301 User s Guide 100...
Страница 104: ...Chapter 11 Destination Filter OMC 2301 User s Guide 104...
Страница 121: ...121 PART IV Management Maintenance 123 Diagnostic 131 Syslog 133 MAC Table 137 IGMP Table 141...
Страница 122: ...122...
Страница 136: ...Chapter 16 Syslog OMC 2301 User s Guide 136...
Страница 140: ...Chapter 17 MAC Table OMC 2301 User s Guide 140...
Страница 142: ...Chapter 18 IGMP Table OMC 2301 User s Guide 142...
Страница 144: ...144...
Страница 174: ...Chapter 19 Introducing the Commands OMC 2301 User s Guide 174...
Страница 190: ...Chapter 20 Command Examples OMC 2301 User s Guide 190...
Страница 208: ...208...
Страница 212: ...Appendix A Legal Information OMC 2301 User s Guide 212...
Страница 218: ...Appendix B Customer Support OMC 2301 User s Guide 218...
Страница 224: ...Index OMC 2301 User s Guide 224...