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626 | Multicast Source Discovery Protocol
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Figure 28-11. Accepting Source-active Messages with
Limit the Source-active Messages from a Peer
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.
Task Command Syntax Command Mode
Specify the forwarding-peer and originating-RP from
which all active sources are accepted without regard for
the the RPF check. If you do not specify an access list,
the peer accepts all sources advertised by that peer. All
sources from RPs denied by the ACL are subjected to
the normal RPF check.
ip msdp default-peer ip-address list
CONFIGURATION
Task Command Syntax Command Mode
OPTIONAL: Store sources that are received after the
limit is reached in the rejected SA cache.
ip msdp cache-rejected-sa
CONFIGURATION
Set the upper limit for the number of sources allowed
from an MSDP peer. The default limit is 100K.
ip msdp peer peer-address sa-limit
CONFIGURATION
FTOS(conf)#ip msdp peer 10.0.50.2 connect-source Vlan 50
FTOS(conf)#ip msdp default-peer 10.0.50.2 list fifty
FTOS(conf)#ip access-list standard fifty
FTOS(conf)#seq 5 permit host 200.0.0.50
FTOS#sh ip msdp sa-cache
MSDP Source-Active Cache - 3 entries
GroupAddr SourceAddr RPAddr LearnedFrom Expire UpTime
229.0.50.2 24.0.50.2 200.0.0.50 10.0.50.2 73 00:13:49
229.0.50.3 24.0.50.3 200.0.0.50 10.0.50.2 73 00:13:49
229.0.50.4 24.0.50.4 200.0.0.50 10.0.50.2 73 00:13:49
FTOS#sh ip msdp sa-cache rejected-sa
MSDP Rejected SA Cache
3 rejected SAs received, cache-size 32766
UpTime GroupAddr SourceAddr RPAddr LearnedFrom Reason
00:33:18 229.0.50.64 24.0.50.64 200.0.1.50 10.0.50.2 Rpf-Fail
00:33:18 229.0.50.65 24.0.50.65 200.0.1.50 10.0.50.2 Rpf-Fail
00:33:18 229.0.50.66 24.0.50.66 200.0.1.50 10.0.50.2 Rpf-Fail