3com MSR 20-20 참조 매뉴얼

Use the peer sa-cache-maximum command to configure the maximum 
number of SA messages that the device can cache.

Use the undo peer sa-cache-maximum command to restore the default 
setting.

By default, the device can cache a maximum of 8,192 SA messages.

display msdp sa-count, display msdp peer-status, and display msdp brief.

# In the public instance allow the device to cache a maximum of 100 SA messages 
from the MSDP peer 125.10.7.6.

<Sysname> system-view

[Sysname] msdp

[Sysname-msdp] peer 125.10.7.6 sa-cache-maximum 100 

peer peer-address sa-policy { import | export } [ acl acl-number ]

undo peer peer-address sa-policy { import | export }

Public instance MSDP view, VPN instance MSDP view

import: Specifies to filter SA messages from the specified MSDP peer.

export: Specifies to filter SA messages forwarded to the specified MSDP peer.

peer-address: MSDP peer address.

acl-number: Advanced ACL number, in the range of 3000 to 3999. If you do not 
provide an ACL number, all SA messages carrying (S, G) entries will be filtered off.

Use the peer sa-policy command to configure a filtering rule for receiving or 
forwarding SA messages.

Use the undo peer sa-policy command to restore the default setting.

By default, SA messages received or to be forwarded are not filtered, namely, all 
SA messages are accepted or forwarded.

In addition to controlling SA message receiving and forwarding by using this 
command, you can also configure a filtering rule for creating SA messages using 
the import-source command.

display msdp peer-status and import-source.

# Configure a filtering rule in the public instance so that SA messages will be 
forwarded to MSDP peer 125.10.7.6 only if they match ACL 3100.