Lisp Instance-Id Support; Information About Lisp Instance-Id Support; Overview Of Lisp Instance Id - Cisco Nexus 7000 Series Configuration Manual

LISP Instance-ID Support

This chapter includes the following sections:
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Information about LISP Instance-ID Support

Overview of LISP Instance ID

The LISP Instance ID provides a means of maintaining unique address spaces (or "address space segmentation")
in the control and data plane. Instance IDs are numerical tags defined in the LISP canonical address format
(LCAF). The Instance ID has been added to LISP to support virtualization.
When multiple organizations inside of a LISP site are using private addresses as Endpoint ID (EID) prefixes,
their address spaces must remain segregated due to possible address duplication. An Instance ID in the address
encoding can be used to create multiple segmented VPNs inside of a LISP site where you want to keep using
EID-prefix-based subnets. The LISP Instance ID is currently supported in LISP ingress tunnel routers and
egress tunnel routers (ITRs and ETRs, collectively known as xTRs), map server (MS) and map resolver (MR).
This chapter explains how to configure LISP xTRs with LISP MS and MR to implement virtualization. The
content considers different site topologies and includes guidance to both shared and parallel LISP model
configurations. It includes conceptual background and practical guidance, and provides multiple configuration
examples.
The purpose of network virtualization, as illustrated the following figure, is to create multiple, logically
separated topologies across one common physical infrastructure.
Information about LISP Instance-ID Support, on page 33
How to Configure LISP Instance-ID Support, on page 41
Configuration Examples for LISP Instance-ID Support, on page 72
C H A P T E R
Cisco Nexus 7000 Series NX-OS LISP Configuration Guide
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