Lisp Shared Model Virtualization Architecture - Cisco Nexus 7000 Series Configuration Manual

LISP Instance-ID Support

LISP Shared Model Virtualization Architecture

As shown in the figure, EID space is virtualized through its association with VRFs, and these VRFs are tied
to LISP Instance IDs to segment the control plane and data plane in LISP. A common, shared locator space,
the default (global) table, is used to resolve RLOC addresses for all virtualized EIDs. The mapping system
must also be reachable through the common locator space.
LISP Shared Model Virtualization Architecture
You can deploy the LISP shared model virtualization in single or multitenancy configurations. In the shared
model single tenancy case, ingress and egress tunnel routers (xTRs) are dedicated to a customer but share
infrastructure with other customers. Each customer and all sites associated with an xTR use the same instance
ID and are part of a VPN using their own EID namespace. LISP instance IDs segment the LISP data plane
and control plane. See the following figure.
Figure 9: LISP shared model single tenancy use case. A customers uses its own xTR and shares a common core network and mapping
system.
In the shared model multitenancy case, a set of xTRs is shared (virtualized) among multiple customers. These
customers also share a common infrastructure with other single and multitenant customers. Each customer
and all sites associated with it use the same instance ID and are part of a VPN using their own EID namespace.
LISP instance IDs segment the LISP data plane and control plane. See the following figure.
Cisco Nexus 7000 Series NX-OS LISP Configuration Guide
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