A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : LISP ITR Graceful Restart
Author(s) : Damien Saucez
Olivier Bonaventure
Luigi Iannone
Clarence Filsfils
Filename : draft-saucez-lisp-itr-graceful-02.txt
Pages : 12
Date : 2013-06-24
Abstract:
The Locator/ID Separation Protocol (LISP) is a map-and-encap
mechanism to enable communications between hosts identified with
their Endpoint IDentifier (EID) over the Internet where EIDs are not
routable. To do so, packets toward EIDs are encapsulated in packets
with routing locators (RLOCs) to form dynamic tunnels. An Ingress
Tunnel Router (ITR) that encapsulates EID packets determines tunnel
endpoints via mappings that associate EIDs to RLOCs. Before
encapsulating a packet, the ITR queries the mapping system to obtain
the mapping associated to the EID of the packet it must encapsulate.
Such mapping is cached by the ITR in its local EID-to-RLOC Cache for
any subsequent encapsulation for the same EID. LISP is scalable
because EID-to-RLOC mappings are cached on ITRs. Initially, the
cache is empty and is populated progressively according to the
traffic traversing the ITR. However, after an ITR is restarted,
e.g., for maintenance reason, its cache is empty which means that all
packets that are re-routed to the freshly restarted ITR will cause
cache misses and a potentially high loss rate. In this draft, we
present mechanisms to reduce the negative impact on traffic caused by
the restart of an ITR in a LISP network.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-saucez-lisp-itr-graceful
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-saucez-lisp-itr-graceful-02
A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=draft-saucez-lisp-itr-graceful-02
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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