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IPv6 PIM-SSM Support Configuring PIM
page 7-42 OmniSwitch 6800/6850/9000 Advanced Routing Configuration Guide December 2007
Verifying RP-Switchover
To view the status of the RP-switchover capability, use the show ipv6 pim sparse command.
-> show ipv6 pim sparse
Status = enabled,
Keepalive Period = 210,
Max RPs = 32,
Probe Time = 5,
Register Suppress Timeout = 60,
RP Switchover = enabled,
SPT Status = enabled
IPv6 PIM-SSM Support
IPv6 Protocol-Independent Multicast Source-Specific Multicast (IPv6 PIM-SSM) is a highly efficient
extension of IPv6 PIM. SSM, using an explicit channel subscription model, allows receivers to receive
multicast traffic directly from the source; an RP tree model is not used. In other words, a Shortest Path
Tree (SPT) between the receiver and the source is created without the use of a Rendezvous Point (RP).
By default, IPv6 PIM software supports Source-Specific Multicast. No additional user configuration is
required. IPv6 PIM-SSM is automatically enabled and operational as long as IPv6 PIM is loaded (see page
7-6) and IGMPv3 source-specific joins are received within the SSM address range.
Source-Specific Multicast Addresses
The multicast addresses range FF3x::/32 that has been reserved by the Internet Assigned Numbers Author-
ity (IANA) as Source-Specific Multicast (SSM) destination addresses is not enabled automatically and
must be configured manually to support SSM. Addresses within this range are reserved for use by source-
specific applications and protocols (e.g., IPv6 PIM-SSM) and cannot be used for any other functions or
protocols. However, you can also map additional multicast address ranges for the SSM group.
PIM-SSM Specifications
RFCs Supported 3306—An Overview of Source-Specific Multicast (SSM)
Valid SSM Address Range FF3x::/32