Refusing To Receive The Hello Message Without The Generation Id Option; Configuring Pim Neighbor Filtering - Huawei Quidway s3700 series Configuration Manual

Quidway S3700 Series Ethernet Switches
Configuration Guide - Multicast
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6.5.4 Refusing to Receive the Hello Message Without the
Generation ID Option
When the Generation ID option in the Hello message received from an upstream neighbor
changes, it indicates that the status of the upstream neighbor changes. Therefore, you can
configure a PIM interface to deny the Hello messages without Generation ID options to obtain
the upstream neighbor status in real time.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
interface interface-type interface-number
The interface view is displayed.
The interface can be a VLANIF interface, or an Loopback interface.
Step 3 Run:
pim require-genid
The Generation ID option is set in a Hello message.
The Hello message without the Generation ID option is rejected.
When the Generation ID option in the Hello message received from an upstream neighbor
changes, it indicates that the upstream neighbor restarts. If a switch does not want to receive
data from an upstream neighbor, the switch sends a Prune message after receiving a data packet
from the upstream neighbor.
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6.5.5 Configuring PIM Neighbor Filtering

To prevent some unknown devices from being involved in PIM, filtering PIM neighbors is
required. An interface sets up neighbor relationships with only the addresses matching the
filtering rules and deletes the neighbors unmatched with the filtering rules.
Issue 01 (2011-10-26)
2. Run:
interface interface-type interface-number
The interface view is displayed.
The interface can be a VLANIF interface, or an Loopback interface.
3. Run:
pim hello-option holdtime interval
The timeout period during which the neighbor is reachable is set.
If no Hello message is received from a neighbor in the timeout period, the neighbor
is considered unreachable.
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6 PIM-DM (IPv4) Configuration
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