ip msdp password peer 10.3.32.154 0 test
!
Device B
!
ip msdp peer 10.3.32.153
ip msdp password peer 10.3.32.153 0 test
!
Related Topics
Configuring MSDP MD5 Password Authentication Between MSDP Peers, on page 213
MSDP MD5 Password Authentication, on page 203
Example: Configuring a Default MSDP Peer
The figure illustrates a scenario where default MSDP peers might be used. In the figure, a customer that owns
Device B is connected to the internet through two ISPs, one that owns Device A and the other that owns
Device C. They are not running (M)BGP between them. In order for the customer to learn about sources in
the ISP domain or in other domains, Device B identifies Device A as its default MSDP peer. Device B
advertises SA messages to both Device A and Device C, but accepts SA messages either from Device A only
or Device C only. If Device A is the first default peer in the configuration, it will be used if it is up and running.
Only if Device A is not running will Device B accept SA messages from Device C.
The ISP will also likely use a prefix list to define which prefixes it will accept from the customer device. The
customer will define multiple default peers, each having one or more prefixes associated with it.
The customer has two ISPs to use. The customer defines both ISPs as default peers. As long as the first default
peer identified in the configuration is up and running, it will be the default peer and the customer will accept
all SA messages it receives from that peer.
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3.6E (Catalyst 3850 Switches)
236 OL-32598-01
Configuring MSDP
Example: Configuring a Default MSDP Peer
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