DLSw (Data Link Switching) is developed by APPN (Advanced Peer-to-Peer Networking) and Implementers Workshop (AIW) to implement a method of carrying SNA (System Network Architecture) through TCP/IP. 

Today we will learn the routing protocols IGRP and EIGRP.

IGRP:

An interior gateway routing protocol designed by Cisco in the mid-1980s. 

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MLDsnooping is the abbreviation for Multicast Listener Discovery Snooping. It is an IPv6 multicast restriction mechanism running on Layer 2 devices, used to manage and control IPv6 multicast groups.

MPLS VS IP
Principle of IP forwarding:

The router checks the destination IP address of the data packet and forwards the data according to the routing table.

NAT (Network Address Translation, network address translation) was proposed in 1994. When some hosts in the private network have been assigned local IP addresses, but now they want to communicate with hosts on the Internet, the NAT method can be used. Defined in RFC 1631.

Do multiple computers under the same WIFI have the same external IP? Can an external website or application recognize that it is from a wireless router?

Someone said that in today's network communication traffic, about 80% of the resources are wasted, and less than one-fifth of the resources are effectively used.

RSVP only makes resource requests in one direction. Therefore, although the same application program may act as both a sender and a receiver, RSVP has a logical difference between the sender and the receiver.