Refusing To Receive The Hello Message Without The Generation Id Option - Huawei Quidway S7700 Configuration Manual - Multicast
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Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast
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12.5.4 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.
Context
A switch assigns a random Generation ID to an interface enabled with PIM. The Hello messages
sent by the interface carry the random Generation ID. If the status of the interface changes, the
random Generation ID is updated.
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. 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.
Do as follows on the PIM-DM switch:
Procedure
Step 1 Run:
system-view
The system view is displayed.
Issue 01 (2011-07-15)
3.
Run:
hello-option holdtime interval
The timeout period for keeping a neighbor reachable is set.
Each switch maintains a timer for each neighbor. When receiving a Hello message, a
switch resets the timer. If the local switch does not receive any Hello message from
a neighbor after the timer times out, the local switch considers that the neighbor is
unreachable.
Configuration on an Interface
1.
Run:
system-view
The system view is displayed.
2.
Run:
interface interface-type interface-number
The interface view is displayed.
3.
Run:
pim ipv6 hello-option holdtime interval
The timeout period for keeping the neighbor reachable is set.
If the local switch does not receive any Hello message from a neighbor after the timer
times out, the local switch considers that the neighbor is unreachable.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
12 PIM-DM (IPv6) Configuration
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