I-D ACTION:draft-shah-ppvpn-ipls-00.txt

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	Title		: IP over LAN Service (IPLS)
	Author(s)	: H. Shah et al.
	Filename	: draft-shah-ppvpn-ipls-00.txt
	Pages		: 16
	Date		: 2002-10-21
	
A Virtual Private LAN Service (VPLS) [VPLS] is used to interconnect 
systems across a wide-area or metropolitan-area network, making it 
appear to those systems as if they are interconnected on a private 
LAN.  The systems which are interconnected in this way may 
themselves be LAN switches.  If, however, the interconnected systems 
are NOT LAN switches, but rather are IP hosts or IP routers, certain 
simplifications are possible.  We call this simplified type of 
virtual private LAN service an 'IP over LAN Service' (IPLS).  In 
IPLS, as in VPLS, LAN interfaces are run in promiscuous mode, and 
frames are forwarded based on their MAC Destination Addresses. 
However, the maintenance of the MAC forwarded tables is done via 
signaling, rather than via the 'MAC Address Learning' procedures of 
IEEE 802.1D.  Further, Address Resolution Protocol (ARP) messages 
are proxied, rather than being carried transparently. This draft 
specifies the protocols and procedures for support of the IPLS 
service.

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