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Question 293 - H12-891 discussion
A campus deployed both IPv4 and IPv6 networks for service testing, and ran IS-S to interconnect the networks. (The S-S routing protocol has good scalability and is widely used in the live network.)
Regarding IS-IS extensibility, which of the following statements is true?
A.
In order to support IPv6, IS-IS needs to add TLV to carry IPv6 address information
B.
IS-IS uses the TLV structure to build messages, making lS-IS more flexible and extensible
C.
NLPID is a new type of TLV added by IS-IS to support IPv6
D.
For IS-IS, adding new features simply adds a new TLV to
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