Router A
Router(config)# ip msdp default-peer 10.1.1.1
Router(config)# ip msdp default-peer 10.1.1.1 prefix-list site-a
Router(config)# ip prefix-list site-b permit 10.0.0.0/1
Router C
Router(config)# ip msdp default-peer 10.1.1.1 prefix-list site-a
Router(config)# ip prefix-list site-b permit 10.0.0.0/1
Caching Source-Active State: Example
This example shows how to enable the cache state for all sources in 171.69.0.0/16 sending to
groups 224.2.0.0/16:
Device(config)# ip msdp cache-sa-state 100
Device(config)# access-list 100 permit ip 171.69.0.0 0.0.255.255 224.2.0.0 0.0.255.255
Requesting Source Information from an MSDP Peer: Example
This example shows how to configure the switch to send SA request messages to the MSDP peer at 171.69.1.1:
Device(config)# ip msdp sa-request 171.69.1.1
Controlling Source Information that Your Switch Originates: Example
This example shows how to configure the switch to filter SA request messages from the MSDP peer
at 171.69.2.2. SA request messages from sources on network 192.4.22.0 pass access list 1 and are accepted;
all others are ignored.
Device(config)# ip msdp filter sa-request 171.69.2.2 list 1
Device(config)# access-list 1 permit 192.4.22.0 0.0.0.255
Controlling Source Information that Your Switch Forwards: Example
This example shows how to allow only (S,G) pairs that pass access list 100 to be forwarded in an SA message
to the peer named switch.cisco.com:
Device(config)# ip msdp peer switch.cisco.com connect-source gigabitethernet1/0/1
Device(config)# ip msdp sa-filter out switch.cisco.com list 100
Device(config)# access-list 100 permit ip 171.69.0.0 0.0.255.255 224.20 0 0.0.255.255
Routing Configuration Guide, Cisco IOS XE Everest 16.6.x (Catalyst 9500 Switches)
49
Configuring MSDP
Caching Source-Active State: Example
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