Dell Force10 E1200i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 606
Prevent MSDP from Caching a Local Source, Prevent MSDP from Caching a Remote Source
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www.dell.com | support.dell.com Prevent MSDP from Caching a Local Source You can prevent MSDP from caching an active source based on source and/or group. Since the source is not cached, it is not advertised to remote RPs. Task OPTIONAL: Cache sources that are denied by the redistribute list in the rejected SA cache. Prevent the system from caching local SA entries based on source and group using an extended ACL. Command Syntax Command Mode ip msdp cache-rejected-sa CONFIGURATION ip msdp redistribute list CONFIGURATION When you apply this filter, the SA cache is not affected immediately. When sources which 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_E600(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 UpTime GroupAddr SourceAddr RPAddr 00:02:20 239.0.0.1 10.11.4.2 192.168.0.1 LearnedFrom local Reason Redistribute Prevent MSDP from Caching a Remote Source Task Command Syntax OPTIONAL: Cache sources that are denied by the SA filter in the rejected SA cache. Prevent the system from caching remote sources learned from a specific peer based on source and group. ip msdp cache-rejected-sa ip msdp sa-filter list out peer list ext-acl Command Mode CONFIGURATION CONFIGURATION In the example below, R1 is advertising source 10.11.4.2. It is already in the SA cache of R3 when an ingress SA filter is applied to R3. The entry remains in the SA cache until it expires; it is not stored in the rejected SA cache. 606 | Multicast Source Discovery Protocol
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