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Which mechanism allows these duplicate addresses to exist in your network?

You are provisioning a new customer for access to your Layer 3 VPN. The customer is using
172.16.35.0/24 as their internal IP address space, which is also being used by an existing Layer 3
VPN customer. The two customers share many PE routers in common across your network.
Which mechanism allows these duplicate addresses to exist in your network?

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A.
route origin

B.
route target

C.
route refresh

D.
route distinguisher

Explanation:

2 Comments on “Which mechanism allows these duplicate addresses to exist in your network?

  1. khan says:

    To avoid overlapping private addresses, you can configure the network devices to use public addresses instead of private addresses. However, this is a large and complex undertaking. The solution provided in RFC 4364 uses the existing private network numbers to create a new address that is unambiguous. The new address is part of the VPN-IPv4 address family, which is a BGP address family added as an extension to the BGP protocol. In VPN-IPv4 addresses, a value that identifies the VPN, called a route distinguisher,

    is prefixed to the private IPv4 address, providing an address that uniquely identifies a private IPv4 address




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