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Operation Manual – Multicast Protocol
Quidway S5600 Series Ethernet Switches-Release 1510
Chapter 8 MSDP Configuration
Huawei Technologies Proprietary
8-15
Operation
Command
Description
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.
Configure the
minimum TTL for the
multicast packets sent
to the specified MSDP
peer
peer
peer-address
minimum-ttl
ttl-value
Optional
By default, the value of TTL
threshold is 0.
8.4.5 Configuring SA Message Cache
With the SA message caching mechanism enabled on the router, the group that a new
member subsequently joins can obtain all active sources directly from the SA cache
and join the corresponding SPT source tree, instead of waiting for the next SA
message.
You can configure the number of SA entries cached in each MSDP peer on the router
by executing the following command, but the number must be within the system limit.
To protect a router against Deny of Service (DoS) attacks, you can manually configure
the maximum number of SA messages cached on the router. Generally, the configured
number of SA messages cached should be less than the system limit.
Table 8-11
Configure SA message cache
Operation
Command
Description
Enter system view
system-view
—
Enter MSDP view
msdp
—
Enable SA message
caching mechanism
cache-sa-enable
Optional
By default, the SA message
caching mechanism is
enabled.
Configure the
maximum number of
SA messages cached
peer
peer-address
sa-cache-maximum
sa-limit
Optional
By default, the maximum
number of SA messages
cached on a router is 2,048.