Author Topic: Subnetwork Access Protocol  (Read 368 times)

akhi

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Subnetwork Access Protocol
« on: January 18, 2016, 04:52:47 AM »
The Subnetwork Access Protocol (SNAP) is an extension of the IEEE 802.2 Logical Link Control (LLC) to distinguish much more protocols of the higher layer than using of the 8-bit Service Access Point fields (LSAP) present in the IEEE 802.2 header.
The SNAP and LSAP fields are added to the packets at the transmitting node in order to allow the receiving node to pass each received frame to an appropriate device driver which understands given protocol.

santhoshidatasoft

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Re: Subnetwork Access Protocol
« Reply #1 on: January 20, 2016, 02:18:50 AM »
SubNetwork Access Protocol (SNAP) refers to a standard used for transmitting IP datagrams across IEEE 802 networks. This means that the IP datagrams can be routed on IEEE 802 networks encapsulated inside the SNAP data link layers 802.3, 802.4 or 802.5, physical network layers, and the 802.2 LLC. SNAP is also used with non-IEEE 802 physical network layers that make use of 802.2 LLC. SNAP is enclosed in a Logic Link Control (LLC IEEE 802.2) header extension. It is intended for the encapsulation of ARP requests and replies, and IP datagrams on IEEE 802 networks.