03/06/2016
Border Gateway Protocol (BGP) is an Internet Engineering Task Force (IETF) standard, and the most scalable of all routing protocols. BGP is the routing protocol of the global Internet, as well as for Service Provider private networks. BGP has expanded upon its original purpose of carrying Internet reachability information, and can now carry routes for Multicast, IPv6, VPNs, and a variety of other data.
Cisco supports all IETF BGP standards, as well as most or all Internet Drafts for BGP. In addition, Cisco is an active participant in the BGP working groups at the IETF and a frequent contributor of new BGP extensions.
Locator/ID Separation Protocol (LISP) is routing architecture that provides new semantics for IP addressing. The current IP routing and addressing architecture uses a single numbering space, the IP address, to express two pieces of information:
Device identity
The way the device attaches to the network
The LISP routing architecture design separates the device identity, or endpoint identifier (EID), from its location, or routing locator (RLOC), into two different numbering spaces. Splitting EID and RLOC functions yields several advantages.
Simplify Routing Operations
LISP enables enterprises and service providers to:
Simplify multihomed routing
Facilitate scalable any-to-any WAN connectivity
Support data center virtual machine mobility
Improve Scalability and Support
LISP routing architecture also:
Improves scalability of the routing system through greater aggregation of RLOCs
Optimizes IP routing for both IPv4 and IPv6 hosts
Reduces operational complexities
LISP can be gradually introduced into an existing IP network without affecting the network endpoints or hosts.
LISP is a Cisco innovation that is being promoted as an open standard. Cisco participates in standards bodies such as the IETF LISP Working Group to develop the LISP architecture.