MVPN Configuration Guidelines and Restrictions

When configuring MVPN, follow these guidelines and restrictions: ? All PE routers in the multicast domain need to be running a Cisco IOS software image that supports the MVPN feature. There is no requirement for MVPN support on the P and CE routers. ? Support for IPv4 multicast traffic must also b...

The Longest Match Routing Rule

Routing to any destination is always done on a longest match basis: A router that has to decide between two different length prefixes of the same network will always follow the longer mask. Suppose, for example, that a router has the following two entries in its routing table: 198.32.1.0/24 via pat...

Classful Routing: Summarization at Boundary Routers

A question arises from the preceding discussion: How does a RIP process interpret the subnet of a major network if it has no interfaces attached to that network? Without an interface on the class A, B, or C  network of the destination, the router has no way of knowing the correct subnet mask to...

WAN Edge QoS Design Considerations

QoS policies required on WAN aggregators include queuing, shaping, selective dropping, and link-efficiency policies in the outbound direction of the WAN link. Traffic is assumed to be correctly classified and marked (at Layer 3) before WAN aggregator ingress. Remember, Layer 3 markings (preferably D...

OSPF Network Types

OSPF can support multiple network types. For example, a multiaccess network such as Ethernet is considered to be an OSPF broadcast network. Table 7-6 shows a listing of supported OSPF network types and characteristics of each.

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