X-Nico

unusual facts about Data link layer



Fieldbus

Use of SDLC at the data link layer permits 250 nodes on one segment with a total distance of 13.2 km.

Internet Mix

Mix profiles exist for IPv4, TCP, VPN (IPsec) and IPv6 traffic, distributions are similar but frame sizes vary given the different overhead and upper layer limitations on MTU.

Nortel Discovery Protocol

The Nortel Discovery Protocol (NDP) is a Data Link Layer (OSI Layer 2) network protocol for discovery of Nortel networking devices and certain products from Avaya and Ciena.


see also

Broadcast domain

Allowing direct data link layer communication between customer nodes exposes the network to various security attacks, such as ARP spoofing.