Sdp-ping

Isp-ping

Svc-ping

Sdp-mtu

Tunnel Label

VC Label

Operational Control Word

UNI

NNI

7

13

21

42

Not So Stubby Areas

Level 1 Areas

Stub Areas

Partially Stubby Areas

Manual route summarization can only be done on autonomous system border routers.

Manual route summarization must be done on all the backbone routers to be effective. Manual route summarization is optional on the routers in non-backbone areas.

Manual route summarization is done on the ABRs. By default, automatic summarization is done; however, it may not be optimal for all networks.

Manual route summarization is done on the ABRs. By default, no route summarization is done and all routes are advertised to all areas.

The FCS is verified and kept in the customer frame. The VLAN tag is kept and transported over the network.

The FCS is verified and kept in the customer frame. The VLAN tag is removed for transport over the network.

The FCS is verified and removed from the frame. The VLAN tag is kept and transported over the network.

The FCS is verified and removed from the frame. The VLAN tag is removed for transport over the network.

The session between router A and router B.

The session between router C and router B.

The session between router D and router B.

Router B will learn the prefix over all of the sessions, then it will choose the best route.

show router ospf opaque-database

show router ospf database

show router ospf opaque-Isa

show router ospf te opaque

Only the route reflector is configured with a cluster id.

There can only be one route reflector in a cluster.

Clients should have iBGP sessions with each other to maintain the mesh.

There can only be one level of route reflectors in the topology.

AS Path of 65200, Next Hop of router A, Origin of IGP.

AS Path of 65200, Next Hop of router A, Origin of incomplete.

Null AS Path, Next Hop of router A, Origin of IGP.

Null AS Path, Next Hop of router A, Origin of incomplete.