View The Source-Active Cache; Limit The Source-Active Cache; Clear The Source-Active Cache; Enable The Rejected Source-Active Cache - Dell Force10 C150 Configuration Manual

• RPs can transmit SA messages periodically to prevent SA storms, and
• only sources that are in the cache are advertised in the SA to prevent transmitting multiple copies of
the same source information.

View the Source-active Cache

Task
View the SA cache.
Figure 28-9. Displaying the MSDP Source-active Cache
R3_E600#show ip msdp sa-cache
MSDP Source-Active Cache - 1 entries
GroupAddr
239.0.0.1

Limit the Source-active Cache

Set the upper limit of the number of active sources that FTOS caches. The default active source limit is
500K messages. When the total number of active sources reaches the specified limit, subsequent active
sources are dropped even if they pass the RPF and policy check.
Task
Limit the number of sources that can be stored in the SA
cache.
If the total number of active sources is already larger than the limit when limiting is applied, the sources
that are already in FTOS are not discarded. To enforce the limit in such a situation, use the command
ip msdp sa-cache

Clear the Source-active Cache

Task
Clear the SA cache of all, local, or rejected entries, or
entries for a specific group.

Enable the Rejected Source-active Cache

Active sources can be rejected because
• the RPF check failed,
• the SA limit is reached,
Command Syntax
show ip msdp sa-cache
SourceAddr RPAddr
10.11.4.2 192.168.0.1
to clear all existing entries.
Command Mode
EXEC Privilege
LearnedFrom Expire UpTime
192.168.0.1
Command Syntax
show ip msdp sa-limit
Command Syntax
clear ip msdp sa-cache
group-address local rejected-sa
[ | |
76 00:10:44
Command Mode
EXEC Privilege
Command Mode
CONFIGURATION
]
Multicast Source Discovery Protocol | 623
clear