PIM GR is enabled.
Step 4 (Optional) Run:
graceful-restart period period
The PIM GR period is set.
By default, the PIM GR period is 120 seconds.
----End
13.11.3 Checking the Configuration
After PIM GR is configured, you can run the command to check whether the PIM routing table
is the same as that before master-slave switchover.
Procedure
Step 1 Run the following commands to check IPv6 PIM routing table.
l 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 ] ]
l 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
13.12 Configuring PIM-IPv6 Silent
The interface directly connecting a multicast device to a user host needs to be enabled with PIM.
In this case, some malicious hosts may simulate a large number of PIM Hello messages and send
the messages to the interface for processing. As a result, the multicast device is suspended. To
avoid the preceding case, you can set the interface to be in the PIM Silent state.
13.12.1 Establishing the Configuration Task
After basic functions of IPv6 PIM-SM and MLD are configured, you can configure the PIM
silent function on the interface connected with the user host. This interface should be enabled
with IPv6 PIM-SM and MLD first.
Applicable Environment
At the access layer, the switch interface directly connected to hosts needs to be enabled with
PIM-IPv6. You can establish the PIM-IPv6 neighbor relationship on the switch interface to
process various PIM-IPv6 packets. The configuration, however, has the security vulnerability.
When a host maliciously generates PIM-IPv6 Hello packets and sends the packets in large
quantity, the switch may break down.
To avoid the preceding case, you can set the status of the switch interface to PIM-IPv6 silent.
When the interface is in the PIM-IPv6 silent state, the interface is prohibited from receiving and
Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast 13 PIM-SM (IPv6) Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
490
To Next Page
Loading...
