Implementing An Ssm Model In Ipv6 Pim - HP A6600 Configuration Manual

Figure 95 IPv6 multicast address format
The admin-scope zone range increases with the value of the Scope field. For example, value E indicates
IPv6 global scope, which contains other admin-scope zones with the Scope field values smaller than E.
Possible values of the Scope field are given in
Table 14 Values of the Scope field
Value
0, F
1
2
3
4
5
6, 7, 9 through D
8
E

Implementing an SSM model in IPv6 PIM

The SSM model and the ASM model are opposites. The ASM model includes the IPv6 PIM-DM and IPv6
PIM-SM modes. The SSM model can be implemented by leveraging part of the IPv6 PIM-SM technique,
and it is also called IPv6 PIM-SSM.
The SSM model provides a solution for source-specific multicast. It maintains the relationships between
hosts and routers through MLDv2.
In actual application, MLDv2 and part of IPv6 PIM-SM technique is adopted to implement the SSM model.
In the SSM model, receivers know exactly where an IPv6 multicast source is located by using
advertisements, consultancy, and so on. Therefore, no RP is needed, no RPT is required, and no source
registration process is needed for the purpose of discovering IPv6 multicast sources in other IPv6 PIM
domains.
The working mechanism of IPv6 PIM-SSM is summarized as follows:
Neighbor discovery
•
DR election
•
SPT building
•
Neighbor discovery
IPv6 PIM-SSM uses the same neighbor discovery mechanism as in IPv6 PIM-SM. For more information,
see "Neighbor
Meaning
Reserved
Interface-local scope
Link-local scope
Subnet-local scope
Admin-local scope
Site-local scope
Unassigned
Organization-local scope
Global scope
discovery."
Table 16.
Remarks
—
—
—
IPv6 admin-scope zone
IPv6 admin-scope zone
IPv6 admin-scope zone
IPv6 admin-scope zone
IPv6 admin-scope zone
IPv6 global-scope zone
310