Information Technology Reference
In-Depth Information
This deployment has four routers, each configured with a loopback interface of the same
address. If the RP address is used for the Router-ID, BGP sessions do not form, and the IGP
might not converge. The BGP Router-ID and IGP Router-ID must be explicitly configured
to avoid potential network impact.
NOTE
Customer Configurations
The most common scenarios for providing customer connectivity are described here, with
configuration examples. The scenario in which the customer uses the ISP's RP is not
covered, because no MSDP/mBGP peering is involved.
The customer connectivity scenarios are
•
MSDP default peer
•
Multiple links, same upstream provider
•
Multiple ISPs, dedicated unicast and multicast
•
Multiple upstream ISPs, redundant multicast
MSDP Default Peer
As shown in Figure 11-28, this scenario illustrates a customer who has his own RP and a
single link to his upstream provider.
Figure 11-28
MSDP Single Peer Customer Connection
ISP Network
Customer
Network
RP
MSDP Peer
The customer configuration is shown in Example 11-19.
