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

LISP Instance-ID Support

LISP Parallel Model Virtualization Architecture

Figure 11: LISP parallel model virtualization resolves an EID and associated RLOCs within the same or a different VRF. In this example,
both EID and RLOC addresses are resolved in the same VRF, but multiple (parallel) segmentation is configured on the same device (BLUE
and PINK).
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 as well.
In the figure, virtualized EID space is associated with a VRF (and bound to an Instance ID) that is tied to
locator space associated with the same VRF, in this case - Pink/Pink and Blue/Blue. However, this is not
required; the EID VRF does not need to match the RLOC VRF. In any case, a mapping system must be
reachable through the associated locator space. Multiple parallel instantiations can be defined.
A shared model and parallel model can be combined such that multiple EID VRFs share a common RLOC
VRF, and multiple instantiations of this architecture are implemented on the same platform, as shown in the
following figure.
Figure 12: LISP shared and parallel models may be combined for maximum flexibility.
LISP Parallel Model Virtualization Architecture
You can deploy LISP parallel model virtualization in single or multitenancy configurations. In the parallel
model multitenancy case, a set of xTRs is shared (virtualized) among multiple customers, and each customer
uses their own private (segmented) core infrastructure and mapping system. All sites associated with the
customer use the same instance ID and are part of a VPN using their own EID namespace, as shown in the
following figure.
Cisco Nexus 7000 Series NX-OS LISP Configuration Guide
39