Year: 2013

IPv6 – SLAAC EUI-64 Address Format

January 7, 2013 IPv6
IPv6 – SLAAC EUI-64 Address Format
UPDATE on 22 Mar 2018:
Article is correctly describing what is SLAAC and why is needed and describes how SLAAC uses RFC 2373 to generate interface IPv6 address. The thing is that today RFC 7217 describes an enhanced new way of SLAAC algorithm to improve user security and protect hosts from attacks. Details are available here in my new article about SLAAC.

Stateless autoconfiguration or SLAAC

SLAAC is a method in which the host or router interface is assigned a 64-bit prefix, and then the last 64 bits of its address are derived by the host or router with help of EUI-64 process which is described in next few lines. SLAAC uses NDP protocol to work.ipv6

As the format of the EUI-64 format is seen quite frequently, covering its details seems important too.

[Continue Reading...]

L2TP – Layer 2 Tunneling Protocol

January 2, 2013 Data link layer
L2TP – Layer 2 Tunneling Protocol

L2TP Attributes Summary

L2TP tunnelProjected L2TP standard was made available in the year 1999 by means of RFC 2661. It was originated primarily from two different tunneling protocols, named as: Point-to-Point communication protocol and PPTP (Point to Point Tunneling protocol). In other words, L2TP (Layer 2 Tunnel Protocol) is an up-and-coming IETF (Internet Engineering Task Force) standard that came in front with the traits of two on-hand tunneling protocols, named as: Cisco’s L2F  (Layer 2 Forwarding) and Microsoft’s PPTP (Point-to-Point Tunneling Protocol). L2TP protocol is actually an expanded form of the PPP (a significant constituent for VPNs).

[Continue Reading...]