Configuring The Sa Message Cache; Displaying And Maintaining Msdp - HP 6125XLG Ip Multicast Configuration Manual

Step
5. Configure the lower TTL
threshold for multicast data
packets encapsulated in SA
messages.

Configuring the SA message cache

To reduce the time spent in obtaining the multicast information, enable the SA message cache
mechanism to locally cache (S, G) entries contained in SA messages on the router. More cached (S, G)
entries occupy more memory spaces on the router.
After the SA message cache mechanism is enabled, when the router receives a new (*, G) join message,
it searches its SA message cache first.
• If no matching (S, G) entry is found, the router waits for the SA message that its MSDP peer sends
in the next cycle.
If a matching (S, G) entry is found in the cache, the router joins the SPT rooted at S.
•
To protect the router against DoS attacks, you can set a limit on the number of (S, G) entries that the router
can cache.
To configure the SA message cache:
Step
1. Enter system view.
2. Enter MSDP view.
3. Enable the SA message cache
mechanism.
4. Configure the maximum
number of (S, G) entries
learned from the specified
MSDP peer that the router can
cache.

Displaying and maintaining MSDP

Execute display commands in any view and reset commands in user view.
Command
peer peer-address minimum-ttl
ttl-value
Command
system-view
msdp [ vpn-instance vpn-instance-name ]
cache-sa-enable
peer peer-address sa-cache-maximum
sa-limit
151
Remarks
The default setting is 0.
Remarks
N/A
N/A
By default, the SA
message cache
mechanism is enabled.
The device caches the (S,
G) entries contained in the
received SA messages.
The default setting is
4294967295.