nx.os.and.cisco.nexus.switching.2nd.edition.1587143046

scale. The decoupling of the server IP address identity, EIDs, location, and RLOC enable a
dynamic mapping mechanism between these two address families providing mobility. EIDs
can change locations dynamically and are reachable via different RLOCs. The LISP RLOC
is part of and reachable via the traditional IP routing topology; when a host moves between
locations (RLOC), it is only the mapping to the host (EID) and RLOC that are updated
dynamically. The ability to dynamically have the network detect movement allows traffic to
be sent to the new location without any impact to the underlying routing infrastructure. The
EID-to-RLOC mapping is performed by the LISP MS.
The following configuration assumes that the Nexus 7000 runs LISP; here are the
configuration details and steps for the LISP configuration on the Nexus 7000:
Because NX-OS is a modular operating system, the LISP service needs to be enabled.
1. Enable the LISP feature on the Nexus 7000, as shown in Example 13-1.
Example 13-1. Enabling LISP Feature/Process
Click here to view code image
xTR#
xTR# conf t
Enter configuration commands, one per line. End with
CNTL/Z.
xTR(config)# feature lisp
xTR(config)# show feature | i lisp
lisp 1 enabled
xTR(config)# exit
xTR# copy running-configuration startup-configuration
2. Configure the ITR and ETR functionality on the Nexus 7000, as shown in Example
13-2.
Example 13-2. Configure ITR and ETR Functionality
Click here to view code image
xTR#
xTR# conf t
Enter configuration commands, one per line. End with
CNTL/Z.
xTR(config)# ip lisp itr-etr
xTR(config)# exit
xTR# copy running-configuration startup-configuration
3. Define the global mappings for the servers IP Address space, as shown in Example