November 1999
Intermediate to advanced
576 pages
15h 3m
English
Routing-protocol migration can be divided into three categories:
Migrating from a classful distance-vector protocol, such as RIP or IGRP, to a classless link-state protocol, such as OSPF or IS-IS
Migrating a classful distance vector to a classless advanced distance vector, such as Enhanced IGRP
Migrating customer routes from the IGP of an ISP to BGP
Each of these migration scenarios is discussed fully in the following sections.
For the sake of this discussion, imagine you are migrating from IGRP, which is the classful distance-vector protocol, to a link-state protocol, OSPF. Remember that both OSPF and IS-IS require hierarchy. The network in Figure 12-2 shows that ...
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