Checking The Configuration; Adjusting Control Parameters For State-Refresh; Estalishing The Configuration Task - Huawei Quidway S7700 Configuration Manual - Multicast

Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast
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12.6.5 Checking the Configuration

After the control parameters for prune are adjusted, you can check information about the PIM
interface and the PIM routing table and statistics about PIM control messages through
commands.
Procedure
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12.7 Adjusting Control Parameters for State-Refresh

In a PIM-DM network, the periodic flooding-pruning wastes lots of network resources. To
prevent the pruned interface from forwarding messages because the prune timer times out, you
can enable the State-Refresh function to enable the multicast device to send State-Refresh
messages periodically, refresh the prune state of the interface, and maintain SPT.

12.7.1 Estalishing the Configuration Task

After basic functions of IPv6 PIM-DM are configured, you can set the interval for sending State-
Refresh messages, period for waiting to receive the next State-Refresh message, and TTL value
carried in the State-Refresh message as required.
Applicable Environment
By default, a PIM-DM interface is in the forwarding state. The pruned interface continues to
forward packets after the prune timer times out. In the PIM-DM network, periodically flooding
State-Refresh messages can update the prune timer and maintain the suppressed state of the
prune interface.
Issue 01 (2011-07-15)
3. Run:
pim ipv6 hello-option override-interval interval
The interval for overriding the prune action is set.
Run the display pim ipv6 interface [ interface-type interface-number | up | down ]
[ verbose ] command to check information about PIM-IPv6 interfaces.
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.
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 } ]
– 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 } ]
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[ outgoing-interface-number [ number ] ]
*
12 PIM-DM (IPv6) Configuration
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