CCIE Routing & Switching Question of the Week: Type Length Value

Which protocols use TLV (Type Length Value) fields to carry information? (Choose 3.)

A. OSPFv2
B. OSPFv3
C. LDP
D. RIPv2
E. BGP
F. CDP

Reveal Answer

Answer: B, E and F.

OSPFv2, LDP and RIPv2 all have fixed fields for carrying formation. OSPFv3, BGP (for some attributes) and CDP use TLVs to add flexibility to the protocols in the process of passing information.

CCIE Routing & Switching Question of the Week Series

CCIE Routing & Switching Question of the Week: Inbound BGP
CCIE Routing & Switching Question of the Week: IS-IS
CCIE Routing & Switching Question of the Week: Outbound BGP
CCIE Routing & Switching Question of the Week: CBWFQ
CCIE Routing & Switching Question of the Week: Query Response Time
CCIE Routing & Switching Question of the Week: Type Length Value

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