Operation Manual – Multicast Protocol
Quidway S3900 Series Ethernet Switches-Release 1510 Chapter 8 MSDP Configuration
Huawei Technologies Proprietary
8-14
Operation Command Description
Configure to filter
multicast sources
using SA messages
import-source [ acl
acl-number ]
Optional
You can configure the rule
for filtering related multicast
group IP addresses in ACL.
By default, all the (S, G)
entries in the domain are
advertised in the SA
message.
8.4.4 Configuring a Rule for Filtering Received and Forwarded SA Messages
Besides the creation of source information, controlling multicast source information
allows you to control the forwarding and reception of source information. You can
control the reception of SA messages using the MSDP inbound filter (corresponding to
the import keyword); you can control the forwarding of SA messages by using either
the MSDP outbound filter (corresponding to the export argument) or the TTL threshold.
By default, an MSDP peer receives and forwards all SA messages.
MSDP inbound/outbound filter implements the following functions:
z Filtering out all (S, G) entries
z Receiving/forwarding only the SA messages permitted by advanced ACL rules
(You can configure ACL rules for filtering source IP addresses and group IP
addresses.)
An SA message carrying encapsulated data can reach the specified MSDP peer
outside the domain only when the TTL in its IP header exceeds the threshold; therefore,
you can control the forwarding of SA messages that carry encapsulated data by
configuring the TTL threshold.
Table 8-10 Configure a rule for filtering received and forwarded SA messages
Operation Command Description
Enter system view
system-view
—
Enter MSDP view
msdp
—
Configure to filter
imported and exported
SA messages
peer peer-address
sa-policy { import |
export } [ acl acl-number ]
Optional
By default, no filtering is
imposed on SA messages to
be received or forwarded,
namely all SA messages
from MSDP peers are
received or forwarded.
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