R3721-F3210-F3171-HP High-End Firewalls Network Management Configuration Guide-6PW101

638
Ste
p
Command Remarks
1. Enter system view. system-view N/A
2. Enter public network MSDP view.
msdp N/A
3. Configure an SA message
creation rule.
import-source [ acl acl-number ]
No restrictions on (S, G)
entries by default.
4. Configure a filtering rule for
receiving or forwarding SA
messages.
peer peer-address sa-policy { import |
export } [ acl acl-number ]
No filtering rule by
default .
5. Configure the TTL threshold for
multicast data packet
encapsulation in SA messages.
peer peer-address minimum-ttl ttl-value
Optional.
0 by default.
Configuring the SA cache mechanism
To reduce the time spent in obtaining the multicast information, you can enable the SA cache mechanism
to cache (S, G) entries contained in SA messages locally on the router. However, caching (S, G) entries
uses memory space on the router.
When the SA cache mechanism is enabled and the router receives a new (*, G) join message, the router
searches its SA cache first.
• If the corresponding (S, G) entry does not exist in the cache, the router waits for the SA message that
its MSDP peer will send in the next cycle.
• If the corresponding (S, G) entry exists in the cache, the router joins the corresponding SPT rooted
at S.
To protect the router effectively against denial of service (DoS) attacks, you can set a limit on the number
of (S, G) entries the router can cache.
To configure the SA message cache:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter public network MSDP view.
msdp N/A
3. Enable the SA cache mechanism. cache-sa-enable
Optional.
Enabled by default.
4. Configure the maximum number
of (S, G) entries learned from the
specified MSDP peer that the
router can cache.
peer peer-address sa-cache-maximum
sa-limit
Optional.
2048 by default.
Displaying and maintaining MSDP
Task Command Remarks
View the brief information of MSDP
peers.
display msdp brief [ state { connect |
down | listen | shutdown | up } ] [ |
{ begin | exclude | include }
regular-expression ]
Available in any view