Lectures notes for 2010 - KTH
Lectures notes for 2010 - KTH Lectures notes for 2010 - KTH
Internet Trends • Numbers of users and internet devices increases very rapidly • Network Wizards’ Internet Domain Survey - https://www.isc.org/solutions/survey July 2009: 681,064,561; Jan. 2008: 541,677,360; Jan. 2005: 317,646,084 hosts • RIPE’s survey hosts: IPv4: 253,335,713, IPv6: 58,321 (Jan. 2010) • RIPE’s survey - Sweden: IPv4: 5,676,447, IPv6: 3,595 (Jan. 2010) – Estimates are based on DNS information; http://www.ripe.net/is/hostcount/ – Network Weather Maps - http://www.cybergeography.org/atlas/weather.html http://www.nordu.net/stat-q/load-map/ndn-map,,traffic,busy • QoS: Demand for integrating many different types of traffic, such as video, audio, and data traffic, into one network ⇒ Multicast, IPv6, RSVP, DiffServ, emphasis on high performance, and TCP extensions • Mobility: both users and devices are mobile • There is a difference between portable (bärbar) vs. mobile (mobil). • IP is used in wireless systems (for example 3G cellular). • Increasing use of wireless in the last hop (WLAN, PAN, Wireless MAN, …) • Security: • Wireless mobile Internet - initial concern driven by wireless link • Fixed Internet - distributed denial of service attacks, increasing telecommuting, … Maguire Internet Trends 1: 27 of 104 maguire@kth.se 2010.03.21 Internetworking/Internetteknik
Trends: Shifting from traditional telecommunications to data communications This is often referred to as the shift to "All-IP" networking. This embodies: • A shift from circuit-switched to packet-switched • such as: from Intelligent network (IN) to IP Multimedia Core Network Subsystem (IMS) • Introduction of new technologies: • Voice over IP (VoIP) • Number portability • Context-awareness (including location-awareness) in services • From services being what the telecommunication operator offers to you to what anyone offers to you. This is accompanied by a major shift in: • How services are created • Where services are provisioned • Where data is stored and who stores it • Desperate efforts to retain control, market share, high profits, access to phone numbers, and call contents, … - the genie is reluctant to go back into the bottle! Maguire Trends: Shifting from traditional telecommunications to data communications 1: 28 of 104 maguire@kth.se 2010.03.21 Internetworking/Internetteknik
- Page 19 and 20: Module 6: SCTP ....................
- Page 21 and 22: Module 7: Dynamic Routing .........
- Page 23 and 24: BGP Open Message ..................
- Page 25 and 26: IGMP Implementation Details........
- Page 27 and 28: Capacity Assignment ...............
- Page 29 and 30: Network Management Systems ........
- Page 31 and 32: Module 10: IPv6 ...................
- Page 33 and 34: Why IPv6? .........................
- Page 35 and 36: Wireless WANs . . . . . . . . . . .
- Page 37 and 38: Module 12: IPSec, VPNs, Firewalls,
- Page 39 and 40: Module 13: Future and Summary......
- Page 41 and 42: Peer to peer networking ...........
- Page 43 and 44: Module 14: Some exercises..........
- Page 45 and 46: Welcome to the Internetworking cour
- Page 47 and 48: Goals, Scope and Method Goals of th
- Page 49 and 50: Learning Outcomes Following this co
- Page 51 and 52: Prerequisites • Datorkommunikatio
- Page 53 and 54: Topics • What an internet is and
- Page 55 and 56: Grades: A..F (ECTS grades) • To g
- Page 57 and 58: Written Assignment Goal: to gain an
- Page 59 and 60: Literature The course will mainly b
- Page 61 and 62: Lecture Plan Subject to revision!
- Page 63 and 64: Context of the module Communication
- Page 65 and 66: How can we deal with all of these d
- Page 67 and 68: Basic concepts open-architecture ne
- Page 69: Internetworked Architecture H … M
- Page 73 and 74: IP traffic growing exponentially! T
- Page 75 and 76: Growth rates Some people think the
- Page 77 and 78: Increasing Data Rates “Ethernet
- Page 79 and 80: The Internet Today Local … Local
- Page 81 and 82: Implicit vs. Explicit Information V
- Page 83 and 84: Encapsulation Appl header user data
- Page 85 and 86: • Transport layer • Port number
- Page 87 and 88: IP “Protocol” field (RFC 1700)
- Page 89 and 90: Decimal Keyword Protocol References
- Page 91 and 92: Decimal Keyword Protocol References
- Page 93 and 94: Decimal Keyword Protocol References
- Page 95 and 96: Basic communication mechanism: data
- Page 97 and 98: Common Used Simple Services Name TC
- Page 99 and 100: Simple Campus Network WAN ISP’s r
- Page 101 and 102: How important are switches vs. rout
- Page 103 and 104: Ethernet Encapsulation (RFC 894) DS
- Page 105 and 106: IEEE 802 Numbers of Interest “…
- Page 107 and 108: SLIP Problems ⇒CSLIP ≡ Compress
- Page 109 and 110: PPP: Point to Point Protocol PPP (R
- Page 111 and 112: PPP summary • support for multipl
- Page 113 and 114: Loopback interface summary • loop
- Page 115 and 116: Using VIF for tunneling TCP UDP ...
- Page 117 and 118: Figure 16: Start the program, then
- Page 119 and 120: Figure 18: After capturing some pac
Internet Trends<br />
• Numbers of users and internet devices increases very rapidly<br />
• Network Wizards’ Internet Domain Survey - https://www.isc.org/solutions/survey<br />
July 2009: 681,064,561; Jan. 2008: 541,677,360; Jan. 2005: 317,646,084 hosts<br />
• RIPE’s survey hosts: IPv4: 253,335,713, IPv6: 58,321 (Jan. <strong>2010</strong>)<br />
• RIPE’s survey - Sweden: IPv4: 5,676,447, IPv6: 3,595 (Jan. <strong>2010</strong>)<br />
– Estimates are based on DNS in<strong>for</strong>mation; http://www.ripe.net/is/hostcount/<br />
– Network Weather Maps - http://www.cybergeography.org/atlas/weather.html<br />
http://www.nordu.net/stat-q/load-map/ndn-map,,traffic,busy<br />
• QoS: Demand <strong>for</strong> integrating many different types of traffic, such as<br />
video, audio, and data traffic, into one network ⇒ Multicast, IPv6,<br />
RSVP, DiffServ, emphasis on high per<strong>for</strong>mance, and TCP extensions<br />
• Mobility: both users and devices are mobile<br />
• There is a difference between portable (bärbar) vs. mobile (mobil).<br />
• IP is used in wireless systems (<strong>for</strong> example 3G cellular).<br />
• Increasing use of wireless in the last hop (WLAN, PAN, Wireless MAN, …)<br />
• Security:<br />
• Wireless mobile Internet - initial concern driven by wireless link<br />
• Fixed Internet - distributed denial of service attacks, increasing telecommuting, …<br />
Maguire Internet Trends 1: 27 of 104<br />
maguire@kth.se <strong>2010</strong>.03.21 Internetworking/Internetteknik
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