Preventing Msdp From Caching A Local Source - Dell C9000 Series Networking Configuration Manual

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The default limit is 100K.

If the total number of sources received from the peer is already larger than the limit when this configuration is

applied, those sources are not discarded. To enforce the limit in such a situation, first clear the SA cache.

Preventing MSDP from Caching a Local

You can prevent MSDP from caching an active source based on source and/or group. Because the source is

not cached, it is not advertised to remote RPs.

OPTIONAL: Cache sources that are denied by the redistribute list in the rejected SA cache.

CONFIGURATION mode

ip msdp cache-rejected-sa

Prevent the system from caching local SA entries based on source and group using an extended ACL.

CONFIGURATION mode

ip msdp redistribute list

Example of Verifying the System is not Caching Local Sources

When you apply this filter, the SA cache is not affected immediately. When sources that are denied by the ACL

time out, they are not refreshed. Until they time out, they continue to reside in the cache. To apply the

redistribute filter to entries already present in the SA cache, first clear the SA cache. You may optionally store

denied sources in the rejected SA cache.

R1(conf)#do show run msdp

ip multicast-msdp

ip msdp peer 192.168.0.3 connect-source Loopback 0

ip msdp redistribute list mylocalfilter

ip msdp cache-rejected-sa 1000

R1_E600(conf)#do show run acl

ip access-list extended mylocalfilter

seq 5 deny ip host 239.0.0.1 host 10.11.4.2

seq 10 deny ip any any

R1_E600(conf)#do show ip msdp sa-cache

R1_E600(conf)#do show ip msdp sa-cache rejected-sa

MSDP Rejected SA Cache

1 rejected SAs received, cache-size 1000

Redistribute

Multicast Source Discovery Protocol (MSDP)

Troubleshooting