Huawei Quidway S5600 Series Operation Manual page 497

Operation Manual – Multicast Protocol
Quidway S5600 Series Ethernet Switches-Release 1510
Operation
Configure
imported and exported
SA messages
Configure
minimum TTL for the
multicast packets sent
to the specified MSDP
peer
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
Enter system view
Enter MSDP view
Enable SA message
caching mechanism
Configure
maximum number of
SA messages cached
Command
to filter peer
sa-policy
export } [ acl acl-number ]
the
peer
minimum-ttl ttl-value
Command
system-view
msdp
cache-sa-enable
the peer
sa-cache-maximum
sa-limit
Huawei Technologies Proprietary
8-15
Chapter 8 MSDP Configuration
Optional
By default, no filtering is
peer-address
imposed on SA messages to
{ import |
be received or forwarded,
namely all SA messages
from
received or forwarded.
Optional
peer-address
By default, the value of TTL
threshold is 0.
—
—
Optional
By default, the SA message
caching
enabled.
Optional
peer-address
By default, the maximum
number of SA messages
cached on a router is 2,048.
Description
MSDP peers are
Description
mechanism is