UMN:CLI User Manual
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as the DR. To elect the DR, each PIM router examines PIM hello messages received from
other neighbor PIM routers and compares its DR priority in those from neighbors. The
router with the highest priority then is elected as the DR. In case of more than one router
with the same highest priority value, the one with the higher IPv6 address is elected. If no
PIM hello message is received from the DR for a certain period of time, another DR
election is held.
To specify the DR priority on an interface, use the following command.
ipv6 pim dr-priority
<0-4294967294>
Specifies the DR priority on an interface.
0-4294967294: priority value (default: 1)
no ipv6 pim dr-priority
[<0-4294967294>]
Deletes the specified DR priority.
10.3.2.3 Neighbor Filtering
If necessary, you can filter neighbor routers using access lists. When you enable this
feature, PIM establishes adjacency without neighbor routers specified as deny in access
lists.
To enable filtering neighbor routers in PIM, use the following command.
ipv6 pim neighbor-filter WORD
Enables filtering neighbor routers in PIM.
WORD: access list name
no ipv6 pim neighbor-filter
WORD
Disables filtering neighbor routers in PIM.
WORD: access list name
To display the information of PIM neighbor routers, use the following command.
show ipv6 pim neighbor [detail]
Shows the information for PIM neighbor routers.
10.3.2.4 PIMv6 Hello Message
PIM routers periodically send PIM hello messages to discover neighboring PIM routers
and to determine which router will be the Designated Router (DR) for each subnet. PIM
hello messages are also the multicast packets using the group address ff02::d (all PIM
routers group).
To specify an interval to send PIM hello messages, use the following command.
ipv6 pim hello-interval <1-
Specifies an interval to send PIM hello messages.
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