UMN:CLI User Manual
V8102
588
no debug ipv6 pim sparse-mode
timer bsr [bst | crp]
no debug ipv6 pim sparse-mode
timer hello [ht | nlt | tht]
no debug ipv6 pim sparse-mode
timer joinprune [jt | et | ppt | kat |
ot]
no debug ipv6 pim sparse-mode
timer register [rst]
To display the contents of the running configuration, use the following command.
show running-config ipv6 pim
dense-mode
Shows the running configuration of dense-mode (PIM-
DM) for IPv6.
show running-config ipv6 pim
sparse-mode
Shows the running configuration of sparse-mode (PIM-
SM) for IPv6.
11.3.9 Source Specific Multicast (SSM)
Multicast supports both many-to-many and one-to-many models, which are also known
as Any Source Multicast (ASM). In this model, receivers may join and leave multicast
groups with (*, G) state that indicates any source and group G. Since there is no means to
specify the source’s information, source discovery such as the RP mechanism in PIM-SM
is needed, which is the key feature of ASM. IPv6 multicast address have the prefix ff00::/8.
Source-Specific Multicast (SSM) is especially suit for one-to-many multicast network. In
the SSM service model, receivers can receive multicast traffic by subscribing to channel
(S, G) that indicates specific IPv6 unicast source S and multicast group address G.
Since SSM assumes that receivers already know the source’s information, no further
source discovery is provided. Thus, receivers need to know the source’s information us-
ing an out of band mechanism. The SSM group address range is defined as ff33::/32 ~
ff3f::/21 by default.
11.3.9.1 PIMv6-SSM
PIM Source-Specific Multicast (PIM-SSM) is a subset of PIM-SM. It is much simpler than
PIM-SM, because it only considers one-to-many multicast service model. PIM-SSM only
use a shortest path tree (SPT) to deliver multicast traffic, so the PIM-SM’s complex
mechanisms such as RP, BSR, SPT switchover and a shared tree are not necessary any
more. PIM-SSM uses the same PIM messages as PIM-SM’s for its operation.
If all routers are configured with PIM-SM and MLDv2, only by using the ipv6 pim ssm
command, PIM-SSM will be enabled. You can also define an additional SSM group other
than the default SSM group range.
To Next Page
Loading...