User's Manual
Table Of Contents
- Chapter 1 INTRODUCTION
- Chapter 2 INSTALLATION
- Chapter 3 Switch Management
- Chapter 4 Basic Switch Configuration
- Chapter 5 File System Operations
- Chapter 6 Cluster Configuration
- Chapter 7 Port Configuration
- Chapter 8 Port Isolation Function Configuration
- Chapter 9 Port Loopback Detection Function Configuration
- Chapter 10 ULDP Function Configuration
- Chapter 11 LLDP Function Operation Configuration
- Chapter 12 Port Channel Configuration
- Chapter 13 Jumbo Configuration
- Chapter 14 EFM OAM Configuration
- Chapter 15 VLAN Configuration
- Chapter 16 MAC Table Configuration
- Chapter 17 MSTP Configuration
- Chapter 18 QoS Configuration
- Chapter 19 Flow-based Redirection
- Chapter 20 Egress QoS Configuration
- Chapter 21 Flexible Q-in-Q Configuration
- Chapter 22 Layer 3 Forward Configuration
- Chapter 23 ARP Scanning Prevention Function Configuration
- Chapter 24 Prevent ARP, ND Spoofing Configuration
- Chapter 25 ARP GUARD Configuration
- Chapter 26 ARP Local Proxy Configuration
- Chapter 27 Gratuitous ARP Configuration
- Chapter 28 Keepalive Gateway Configuration
- Chapter 29 DHCP Configuration
- Chapter 30 DHCPv6 Configuration
- Chapter 31 DHCP option 82 Configuration
- Chapter 32 DHCPv6 option37, 38
- Chapter 33 DHCP Snooping Configuration
- Chapter 34 Routing Protocol Overview
- Chapter 35 Static Route
- Chapter 36 RIP
- Chapter 37 RIPng
- Chapter 38 OSPF
- Chapter 39 OSPFv3
- Chapter 40 BGP
- 40.1 Introduction to BGP
- 40.2 BGP Configuration Task List
- 40.3 Configuration Examples of BGP
- 40.3.1 Examples 1: configure BGP neighbor
- 40.3.2 Examples 2: configure BGP aggregation
- 40.3.3 Examples 3: configure BGP community attributes
- 40.3.4 Examples 4: configure BGP confederation
- 40.3.5 Examples 5: configure BGP route reflector
- 40.3.6 Examples 6: configure MED of BGP
- 40.3.7 Examples 7: example of BGP VPN
- 40.4 BGP Troubleshooting
- Chapter 41 MBGP4+
- Chapter 42 Black Hole Routing Manual
- Chapter 43 GRE Tunnel Configuration
- Chapter 44 ECMP Configuration
- Chapter 45 BFD
- Chapter 46 BGP GR
- Chapter 47 OSPF GR
- Chapter 48 IPv4 Multicast Protocol
- 48.1 IPv4 Multicast Protocol Overview
- 48.2 PIM-DM
- 48.3 PIM-SM
- 48.4 MSDP Configuration
- 48.4.1 Introduction to MSDP
- 48.4.2 Brief Introduction to MSDP Configuration Tasks
- 48.4.3 Configuration of MSDP Basic Function
- 48.4.4 Configuration of MSDP Entities
- 48.4.5 Configuration of Delivery of MSDP Packet
- 48.4.6 Configuration of Parameters of SA-cache
- 48.4.7 MSDP Configuration Examples
- 48.4.8 MSDP Troubleshooting
- 48.5 ANYCAST RP Configuration
- 48.6 PIM-SSM
- 48.7 DVMRP
- 48.8 DCSCM
- 48.9 IGMP
- 48.10 IGMP Snooping
- 48.11 IGMP Proxy Configuration
- Chapter 49 IPv6 Multicast Protocol
- Chapter 50 Multicast VLAN
- Chapter 51 ACL Configuration
- Chapter 52 802.1x Configuration
- 52.1 Introduction to 802.1x
- 52.2 802.1x Configuration Task List
- 52.3 802.1x Application Example
- 52.4 802.1x Troubleshooting
- Chapter 53 The Number Limitation Function of Port, MAC in VLAN and IP Configuration
- 53.1 Introduction to the Number Limitation Function of Port, MAC in VLAN and IP
- 53.2 The Number Limitation Function of Port, MAC in VLAN and IP Configuration Task Sequence
- 53.3 The Number Limitation Function of Port, MAC in VLAN and IP Typical Examples
- 53.4 The Number Limitation Function of Port, MAC in VLAN and IP Troubleshooting Help
- Chapter 54 Operational Configuration of AM Function
- Chapter 55 TACACS+ Configuration
- Chapter 56 RADIUS Configuration
- Chapter 57 SSL Configuration
- Chapter 58 IPv6 Security RA Configuration
- Chapter 59 VLAN-ACL Configuration
- Chapter 60 MAB Configuration
- Chapter 61 PPPoE Intermediate Agent Configuration
- Chapter 62 SAVI Configuration
- Chapter 63 Web Portal Configuration
- Chapter 64 VRRP Configuration
- Chapter 65 IPv6 VRRPv3 Configuration
- Chapter 66 MRPP Configuration
- Chapter 67 ULPP Configuration
- Chapter 68 ULSM Configuration
- Chapter 69 Mirror Configuration
- Chapter 70 RSPAN Configuration
- Chapter 71 sFlow Configuration
- Chapter 72 SNTP Configuration
- Chapter 73 NTP Function Configuration
- Chapter 74 DNSv4/v6 Configuration
- Chapter 75 Summer Time Configuration
- Chapter 76 Monitor and Debug
- Chapter 77 Reload Switch after Specified Time
- Chapter 78 Debugging and Diagnosis for Packets Received and Sent by CPU
- Chapter 79 VSF
- Chapter 80 PoE Configuration
- Chapter 81 SWITCH OPERATION
- Chapter 82 TROUBLESHOOTING
- Chapter 83 APPENDIX A
- Chapter 84 GLOSSARY
48-2
Multicast group are dynamic, the hosts can join and leave the Multicast group at any time.
Multicast group can be permanent or temporary. Some of the Multicast group addresses are assigned
officially; they are called Permanent Multicast Group. Permanent Multicast Group keeps its IP address fixed
but its member structure can vary within. The member amount of Permanent Multicast Group can be arbitrary,
even zero. The IP Multicast addresses which are not kept for use by Permanent Multicast Group can be
utilized by temporary Multicast groups.
224.0.0.0~224.0.0.255 are reserved Multicast addresses (Permanent Group Address), address 224.0.0.0 is
reserved but not assigned, and other addresses are used by Routing Protocol; 224.0.1.0~238.255.255.255
are Multicast addresses available to users(Temporary Group Address) and are valid in the entire domain of
the network; 239.0.0.0~239.255.255.255 are local management Multicast addresses, which are valid only in
specific local domain. Frequently used reserved multicast address list is as follows:
Benchmark address (reserved)
224.0.0.1 Address of all hosts
224.0.0.2 Address of all Multicast Routers
224.0.0.3 Unassigned
224.0.0.4 DVMRP Router
224.0.0.5 OSPF Router
224.0.0.6 OSPF DR
224.0.0.7 ST Router
224.0.0.8 ST host
224.0.0.9 RIP-2 Router
224.0.0.10 IGRP Router
224.0.0.11 Active Agent
224.0.0.12 DHCP Server/Relay Agent
224.0.0.13 All PIM Routers
224.0.0.14 RSVP Encapsulation
224.0.0.15 All CBT Routers
224.0.0.16 Specified SBM
224.0.0.17 All SBMS
224.0.0.18 VRRP
224.0.0.22 IGMP
When Ethernet transmits Unicast IP messages, the destination MAC address it uses is the receiver’s MAC
address. But in transmitting Multicast packets, the transmission destination is not a specific receiver any more,
but a group with uncertain members, thus Multicast MAC address is used. Multicast MAC address is
corresponding to Multicast IP address. It is prescribed in IANA (Internet Assigned Number Authority) that the
higher 25 bits in Multicast MAC address is 0x01005e, and the lower 23bits in MAC address is the lower 23bits
in Multicast IP address.
Since only 23bits out of the lower 28bits in IP Multicast address are mapped into MAC address, therefore
there are 32 IP Multicast addresses which are mapped into the same MAC address.