Dell S4048T, Configuration Manual

Page: 651 / 1277

Example of the
show ip msdp sa-cache
Command
R3#show ip msdp sa-cache
MSDP Source-Active Cache - 1 entries
GroupAddr SourceAddr RPAddr LearnedFrom Expire UpTime
239.0.0.1 10.11.4.2 192.168.0.1 192.168.0.1 76 00:10:44
Limiting the Source-Active Cache
Set the upper limit of the number of active sources that the Dell Networking OS 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 reverse path forwarding (RPF) and
policy check.
To limit the number of sources that SA cache stores, use the following command.
• Limit the number of sources that can be stored in the SA cache.
EXEC Privilege mode
show ip msdp sa-limit
If the total number of active sources is already larger than the limit when limiting is applied, the sources that
are already in Dell Networking OS are not discarded. To enforce the limit in such a situation, use the
clear
ip msdp sa-cache
command to clear all existing entries.
Clearing the Source-Active Cache
To clear the source-active cache, use the following command.
• Clear the SA cache of all, local, or rejected entries, or entries for a specific group.
CONFIGURATION mode
clear ip msdp sa-cache [group-address | local | rejected-sa]
Enabling the Rejected Source-Active Cache
To cache rejected sources, use the following command.
Active sources can be rejected because the RPF check failed, the SA limit is reached, the peer RP is
unreachable, or the SA message has a format error.
• Cache rejected sources.
CONFIGURATION mode
ip msdp cache-rejected-sa
Multicast Source Discovery Protocol (MSDP) 651