OTV relies on which underlying protocol?

The correct answer is A. IS-IS. Overlay Transport Virtualization (OTV) uses IS-IS (Intermediate System to Intermediate System) as its control-plane protocol. OTV is a Cisco MAC-in-IP technology designed to extend Layer 2 VLANs across Layer 3 boundaries (such as between data centers). Rather than flooding to…

Advanced Data Center Networks

Question

Options

AIS-IS
BEIGRP
COSPF
DBGP

How the community answered

(37 responses)

A
86% (32)
B
3% (1)
C
3% (1)
D
8% (3)

Explanation

Overlay Transport Virtualization (OTV) uses IS-IS (Intermediate System to Intermediate System) as its control-plane protocol. OTV is a Cisco MAC-in-IP technology designed to extend Layer 2 VLANs across Layer 3 boundaries (such as between data centers). Rather than flooding to learn MAC addresses, OTV uses IS-IS to advertise and distribute MAC address reachability information between OTV edge devices (called 'overlay interfaces'). IS-IS was chosen because it is highly scalable, flexible, and supports opaque TLV extensions that OTV leverages to carry MAC/VLAN mappings. The data plane encapsulates Ethernet frames in IP/UDP for transport across the routed underlay, but the control plane is entirely IS-IS based.

Topics

#OTV#IS-IS#overlay transport#control plane

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