Procedure
l Run the display pim ipv6 interface [ interface-type interface-number | up | down ]
[ verbose ] command to check information about PIM-IPv6 interfaces.
l Run the display pim ipv6 control-message counters [ message-type { assert | graft |
graft-ack | hello | join-prune | state-refresh | bsr } | interface interface-type interface-
number ]
*
command to check the number of sent and received PIM-IPv6 control messages.
l Run the following commands to check the PIM-IPv6 multicast routing table.
– display pim ipv6 routing-table [ ipv6-source-address [ mask mask-length ] | ipv6-
group-address [ mask mask-length ] | flags { act | del | exprune | ext | loc | niif |
nonbr | none | rpt | sg_rcvr | sgjoin | spt | swt | wc | upchg } | fsm | incoming-
interface { interface-type interface-number | register } | mode { dm | sm | ssm } |
outgoing-interface { exclude | include | match } { interface-type interface-number |
none | register } ]
*
[ outgoing-interface-number [ number ] ]
– display pim ipv6 routing-table brief [ ipv6-source-address [ mask mask-length ] |
ipv6-group-address [ mask mask-length ] | incoming-interface { interface-type
interface-number | register } ]
*
----End
12.8 Adjusting Control Messages for Graft
To enable new members in a network to quickly receive multicast data, a multicast device
actively sends a Graft message through an upstream interface, requesting the upstream device
to forward multicast data to this network segment.
12.8.1 Establishing the Configuration Task
After basic functions of IPv6 PIM-DM are configured, you can set the interval for retransmitting
Graft messages as required.
Applicable Environment
In the PIM-DM network, if State-Refresh is not enabled, the pruned interface can forward
packets only after the Prune timer times out. If State-Refresh is enabled, the pruned interface
may not continue to forward packets forever.
To enable new members in the network to quickly receive multicast data, the PIM-DM switch
sends a Graft message through an upstream interface. After receiving the Graft message, the
upstream switch immediately replies a Graft-Ack message and restores the forwarding of the
interface that receives the Graft message.
switchs in the control of default values can work normally. In the S7700, users can adjust related
parameters according to the specific network environment.
NOTE
If there is no special requirement, default values are recommended.
Pre-configuration Tasks
Before adjusting control parameters for graft, complete the following tasks:
Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast 12 PIM-DM (IPv6) Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
436
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