How To Configure Lisp Support For Disjointed Rloc Domains; Pxtr 1 Or Rtr Configuration - Cisco Nexus 7000 Series Configuration Manual

Overview of LISP Support for Disjointed RLOC Domains
An end host connected to xTR 1 in site A sends traffic to an end host attached to the xTR in site B. Since the
source and destination RLOCs are from different RLOC spaces, PxTR 1 performs the role of RTR to transport
traffic across the RLOC spaces. The detailed workflow:
1 xTR 1 (acting as an ITR) receives traffic from an attached end host, and sends a Map-Request for the
destination EID (198.51.100.10), to the Map-Server (denoted by the IP address 192.0.2.9/32).
2 The Map-Server responds with a proxy reply containing the configured RTR locators (with IP addresses
192.0.2.1 and 203.0.113.15). The Map-Server does because the ITR-RLOC in the Map-Request from xTR
1 contains the RLOC from site A.
3 xTR 1 populates its map-cache with locator information (that is, PxTR 1 and PxTR 2 RLOCs) for the
RTRs.
4 xTR 1 encapsulates LISP traffic and forwards it to the RTR in the data plane.
5 The RTR decapsulates the ingress LISP traffic and sends a Map-Request to the Map-Server for the
destination EID, for the first packet.
6 The ITR-RLOC of the Map-Request comprises the locators configured under the locator set. The locators
are 192.0.2.10 and 192.0.2.21.
A Map-Request is sent because the static map-cache is configured with the map-request command.
7 The Map-Server forwards the Map-Request to the ETR. The Map-Server does because the ITR-RLOC in
the Map-Request from the RTR contains RLOCs from site A and site B.
8 The ETR replies to the RTR with the ETR locator information.
9 The RTR populates its map-cache with the ETR locator information.
10 The RTR re-encapsulates LISP traffic forwards the ETR.
11 The ETR receives and sends traffic to the destination end host.

How to Configure LISP Support for Disjointed RLOC Domains

Note • Map-Servers and RTRs can be connected to eight locator scopes or address spaces.
• Type the switch# configure terminal command to enter global configuration mode (config)#
RTR configuration on PxTR 1 and the Map-Server:

PxTR 1 or RTR Configuration

Step 1 Configure LISP
(config)# feature lisp
Step 2 Create two VRF instances on the RTR, one for the underlay (VRF core), and one for the overlay
(VRF vrf5000).
Configure LISP parameters for the core VRF
(config)# vrf context core
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LISP Support for Disjointed RLOC Domains