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Lisp support draft-ietf-lisp-01.txt draft-ietf-lisp-alt-01.txt (<<< Why need GRE ????) draft-ietf-lisp-interworking-00.txt draft-ietf-lisp-ms-01.txt draft-farinacci-lisp-lig-00.txt
Support LISP for both IPv4 and IPv6 ITR, ETR and PTR (proxy tunnel router) (<<< How PTR positions ?) LISP-NAT for IPv4 only ALT-router, MAP-Resolver and Map-Server
Code Effort IOS implementation - Loc/ID split functionality IOX implementation - TE-ITR / TR-ETR functionality
LISP Deployment LISP-ALT Infrastructure GRE tunnels numbered out of 240.0.0.0/4 LISP-ALT uses 32-bit AS numbers, format is 32656.X (AS not notation) EID-prefixes BGP advertised from "lisp" VRF RLOCs in default VRF
Mapping Database Design ALT - hybrid push/pull push EID-prefixes using BGP on alternate topology of GRE tunnels pull mappings
Service Interface for the Mapping Database ETRs register site RID-prefixes with MAP-Servers ETRs (at the site) are authoritative for their own database mappings When ALT is used, Map-Servers advertise EID-prefixes
What is LISP-ALT ? Advertise EID-prefixes in BGP on an alternate topolofy of GRE An ALT Device is: xTRs configured with GRE tunnels Map-Servers Map-Resolvers Pure ALT-only router for aggregating other ALT peering connections An ALT-only device can be off-the-shelf gear: Rouer hardwre Linux host Just needs to run BGP and GRE
Mapping Entry EID-prefix / Locator-set
Two Basic Techniques LISP Network Address Translation (LISP-NAT) Proxy Tunnel Routers (PTRs)
LISP Data-Plane Encapsulation and router placement Locator reachability Data-triggered mapping service (Map-request, Map-Reply, Map-Register)
LISP Control-Plane Definition for "mapping cache" and "mapping database" mapping database - stored in all ETRs of each LISP site mapping cache - entries obtained and stored in ITRs for the sites sending packets to Modular scalable mapping service ALT Map-Servers and Map-Resolvers User tools for querying the mapping database
PI address - Private IP address (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) PA address - Public address
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