Anycast. Ľubor Jurena CEO Michal Kolárik System Administrator
|
|
|
- Patience Annice Holt
- 5 years ago
- Views:
Transcription
1 Anycast Ľubor Jurena CEO Michal Kolárik System Administrator
2 O nás Registrátor Webhosting Serverové riešenia Správa infraštruktúry Všetko sa dá :-)
3 Index Čo je to anycast? Ako prevádzkovať vlastnú anycast sieť? Problémy technické, právne Monitoring
4 Čo je to anycast?
5 Anycast nie je... Unicast Jeden cieľový server Source R1 R2 R3 SRV1 Dst SRV2 Dst R4 SRV3 Dst
6 Anycast nie je... Multicast Jeden zdroj a skupina príjemcov IPv /4 Source R1 R2 R3 R4 C1 C2 C3 Dst Dst Dst
7 Anycast nie je... Broadcast Napr. ARP B A C D
8 Anycast nie je... Technológia Protokol Nevyžaduje špeciálne technologógie / zariadenia...
9 Anycast JE... RFC 1546:,,Host Anycasting Service AΩ koreňovej DNS infraštruktúry Všetky servery vystupujú pod jednou IP adresou O smerovaní rozhoduje smerovací protokol
10 Anycast JE... Layer 3 routing Source R1 R2 R3 SRV1 Dst SRV2 Dst Routing table Dst Next Hop Distance R4 R5 SRV3 Dst /32 R /32 R /32 R4 2
11 Anycast JE... Ako to vidí smerovač? R2 Source R1 R3 SRV Dst Routing table Dst Next Hop Distance /32 R /32 R /32 R4 2 R4 R5
12 AMS -> F Root lubor@ams:~$ traceroute f.root-servers.net traceroute to f.root-servers.net ( ), 30 hops max, 60 byte packets 1 * * * ( ) ms ms ms 3 ams-ix.as13335.net ( ) ms ms ms 4 f.root-servers.net ( ) ms ms ms lubor@ams:~$ dig chaos txt... hostname.bind. 60 CH TXT "AMS.cf.f.root-servers.org"...
13 SAO -> F Root lubor@sao:~$ traceroute f.root-servers.net traceroute to f.root-servers.net ( ), 30 hops max, 60 byte packets ( ) ms ms ms static.hostdime.com ( ) ms ms ms 3 as30122.saopaulo.sp.ix.br ( ) ms static.hostdime.com ( ) ms as30122.saopaulo.sp.ix.br ( ) ms 4 f.root-servers.net ( ) ms ms ms lubor@sao:~$ dig chaos txt... hostname.bind. 60 CH TXT "gru1a.f.root-servers.org"...
14 BTS -> F Root lubor@bts:~$ traceroute f.root-servers.net traceroute to f.root-servers.net ( ), 30 hops max, 60 byte packets 1 ba-gw1-vl300.skhosting.eu ( ) ms ms ms host.vnet.sk ( ) ms ms ms host.vnet.sk ( ) ms ms ms 4 nixsk1.cloudflare.com ( ) ms ms ms 5 f.root-servers.net ( ) ms ms ms lubor@bts:~$ dig chaos txt... hostname.bind. 60 CH TXT "VIE.cf.f.root-servers.org"...
15 Dôvody pre anycast Fail-over Zlepšenie odozvy Zvýšenie robustnosti Load balancing Ochrana pred útokmi
16 Ako nasadiť anycast? IP adresy Konfigurácia anycast servera Routing Quagga, BIRD,...
17 IP Adresy Minimálne 2 IP adresy 1 IP anycastová 1 IP unicastová Anycastovú IP spravidla nasadíme na loopback ifconfig lo0: /24
18 Konfigurácia anycast servera Upravenie firewall-u Pripravenie služieb na anycast Synchronizácia všetkých anycast serverov Centrálna správa konfigurácie Rovnaký obsah vo všetkých lokalitách
19 Routing Statický smerovací protokol Dynamický smerovací protokol BGP
20 bird.conf filter ipout { if net = /24 then accept; } filter ipin { if net = /0 then accept; } router id ; protocol direct { interface "loopback0"; } protocol kernel { persist; scan time 20; import all; export all; } protocol device { scan time 10; } protocol bgp anycast { source address ; export filter ipout; import filter ipin; graceful restart on; local as 65001; Routing
21 Problémy pri prevádzke
22 Technické Dodávatelia So why not using our IPs? will this affects your service??? ISP pripojení na druhom konci sveta BGP algoritmus Najkratšie neznamená najrýchlejšie Ktorý server má problém?
23 Právne Štátne obmedzenia Čo je zakázané v USA nemusí byť v EU Middle East
24 Monitoring
25 Prečo monitorovať? Potreba byť včas informovaný o výpadku servera a služby Zníženie reakčného času v prípade problémov História dát o serveri
26 Ako monitorovať anycast? Monitorujeme každý server zvlášť (služby, prostriedky) To nestačí, potrebujeme vedieť či sú jednotlivé serveri vo svete dostupné a ako sú dostupné. Potrebujeme monitorovať každý náš server z rôznych lokalít. Monitorovanie odozvy z rôznych lokalít na našu anycast sieť.
27 Možnosti monitorovania anycastu Platené služby monitorovania CDN sietí RIPE Atlas sondy umiestnené v lokalitách po svete, umožňujúce spúšťať merania za kredit.
28 Prečo RIPE Atlas sondy? Cena Možnosť výberu konkrétnej sondy s približnou polohou Viacero možností pre meranie Dobrá dostupnosť (nie všade rovnaká)
29 Ako vybrať sondy? RIPE Atlas používa 2 typy: Anchors Probes
30 Ako vybrať sondy? Systémové tagy: Anchor IPv4 works IPv4 capable IPv4 60d
31 Ako vybrať sondy?
32 Aký typ merania použiť? Traceroute pre výber vhodných sond (3 sondy)
33 Aký typ merania použiť? Ping meranie odozvy na server
34 Ako spracovať dáta z merania? Spracovanie status-check dát Predspracované dáta z ping monitoringu Každú minútu - update
35 Spracovanie merani do Zabbix-u
36 Kedy informovať o probléme? Pri zvýšení odozvy nad 50ms v časovom rozhrani 2 minút Ďalšie možnosti: možnosť informovania o ALERTE z RIPE (nemusí byť vhodné pre anycast) Možnosť informovania v prípade problému súčastne na viacerých alebo všetkých sondách
37 Príklad nasadenia
38 Ďakujeme za pozornosť Ľubor Jurena CEO Michal Kolárik System Administrator
Root DNS Anycast in South Asia
Root DNS Anycast in South Asia Anurag Bhatia, Network Researcher JANOG 38 What are root DNS servers? Authoritative DNS servers for top level dot (like com. / net. etc) Knows authoritative DNS server of
A Root DNS Server. Akira Kato. Brief Overview of M-Root. WIDE Project
A Root DNS Server Akira Kato WIDE Project kato@wide.ad.jp Brief Overview of M-Root Assumes basic knowledge on DNS Dr. Tatsuya Jinmei has introduced in Nov 19, 2004 What s Root Servers? Start point of the
DNS root server deployments. George Michaelson DNS operations SIG APNIC17/APRICOT 2004 Feb KL, Malaysia
DNS root server deployments George Michaelson DNS operations SIG APNIC17/APRICOT 2004 Feb 23-27 2004 KL, Malaysia Why deploy an anycast node? Increase resistance against DDoS Attacks on the root Improve
Copyright 2016 by Martin Krug. All rights reserved.
MS Managed Service Copyright 2016 by Martin Krug. All rights reserved. Reproduction, or translation of materials without the author's written permission is prohibited. No content may be reproduced without
f.root-servers.net ISOC cctld Workshop Nairobi, Kenya, 2005
f.root-servers.net ISOC cctld Workshop Nairobi, Kenya, 2005 The Basics DNS The Domain Name System is a huge database of resource records globally distributed, loosely coherent, scaleable, reliable, dynamic
Root Server Operated by ICANN. DNS Engineering DNS Symposium Madrid May 2017
Root Server Operated by ICANN DNS Engineering DNS Symposium Madrid May 2017 Root Server in a nutshell + RSSAC 026 + Entry point to the root server system. + Authoritative name server that answer queries
RIPE Atlas. Viktor Naumov R&D Software Engineer
RIPE Atlas Viktor Naumov R&D Software Engineer vnaumov@ripe.net Introduction RIPE Atlas: There are many Atlases, this is RIPE Atlas next generation Internet measurement network To scale to thousands of
Introduction xvii. Assessment Test xxxiii
Contents at a Glance Introduction xvii Assessment Test xxxiii Chapter 1 The Components of a Juniper Networks Router 1 Chapter 2 Interfaces 61 Chapter 3 Protocol-Independent Routing 107 Chapter 4 Routing
RIPE Labs Operator Tools, Ideas, Analysis
RIPE Labs Operator Tools, Ideas, Analysis AMS-IX Meeting, Amsterdam, 16 Nov. 2011 Mirjam Kühne, RIPE NCC A Bit of History RIPE NCC started as the coordination centre for the RIPE community - RIPE Database,
CS-435 spring semester Network Technology & Programming Laboratory. Stefanos Papadakis & Manolis Spanakis
CS-435 spring semester 2016 Network Technology & Programming Laboratory University of Crete Computer Science Department Stefanos Papadakis & Manolis Spanakis CS-435 Lecture #4 preview ICMP ARP DHCP NAT
CSCI-1680 Network Layer:
CSCI-1680 Network Layer: Wrapup Rodrigo Fonseca Based partly on lecture notes by Jennifer Rexford, Rob Sherwood, David Mazières, Phil Levis, John JannoA Administrivia Homework 2 is due tomorrow So we can
Internet Anycast: Performance, Problems and Potential
Internet Anycast: Performance, Problems and Potential Zhihao Li, Dave Levin, Neil Spring, Bobby Bhattacharjee University of Maryland 1 Anycast is increasingly used DNS root servers: All 13 DNS root servers
c anomaly detection using a distributed measurement network
Tra c anomaly detection using a distributed measurement network Razvan Oprea Supervisor: Emile Aben (RIPE NCC) System and Network Engineering February 8, 2012 Outline Introduction Similar projects Research
DailyCatch: A Provider-centric View of Anycast Behaviour
DailyCatch: A Provider-centric View of Anycast Behaviour Stephen McQuistin University of Glasgow Sree Priyanka Uppu Marcel Flores Verizon Digital Media Services What is IP anycast? 2 What is IP anycast?
Data Center Configuration. 1. Configuring VXLAN
Data Center Configuration 1. 1 1.1 Overview Virtual Extensible Local Area Network (VXLAN) is a virtual Ethernet based on the physical IP (overlay) network. It is a technology that encapsulates layer 2
Riešenia a technológie pre jednotnú správu používateľov
Riešenia a technológie pre jednotnú správu používateľov Radovan Semančík Agenda Úvod: Identity Crisis Technológie správy používateľov Postup nasadenia Záver Súčasný stav IT Security Nekonzistentné bezpečnostné
RIPE NCC DNS Update. Anand Buddhdev Oct 2016 RIPE 73
RIPE NCC DNS Update Anand Buddhdev Oct 2016 RIPE 73 The DNS team Anand Colin Iñigo Paul Florian Romeo Anand Buddhdev RIPE 73 27 Oct 2016 2 K-root AS 25152 Status Active at 44 sites - Five core sites -
Chapter 4: outline. 4.5 routing algorithms link state distance vector hierarchical routing. 4.6 routing in the Internet RIP OSPF BGP
Chapter 4: outline 4.1 introduction 4.2 virtual circuit and datagram networks 4.3 what s inside a router 4.4 IP: Internet Protocol datagram format IPv4 addressing ICMP 4.5 routing algorithms link state
RIPE Network Coordination Centre. K-root and DNSSEC. Wolfgang Nagele RIPE NCC.
K-root and DNSSEC Wolfgang Nagele RIPE NCC RIPE NCC One of the five Regional Internet Registries Provides IP address and AS number resources to Europe and Middle-East regions DNS related work - Parent
RIPE NCC Technical Services. Kaveh Ranjbar, Chief Information Officer
RIPE NCC Kaveh Ranjbar, Chief Information Officer MENOG 15 Dubai, UAE 2 April 2015 Overview 2 RIPE Atlas K-root expansion DNS services RIPEstat Research Mostly global services, accessible by everyone -
RIPE Atlas. Global Internet Measurement Network March 2016 MENOG 16, Istanbul
RIPE Atlas Global Internet Measurement Network atlas@ripe.net 23-24 March 2016 MENOG 16, Istanbul RIPE Atlas RIPE Atlas MENOG 16 23-24 March 2016 2 RIPE Atlas Overview - March 2016 9,400+ probes connected
521262S Computer Networks 2 (fall 2007) Laboratory exercise #2: Internetworking
521262S Computer Networks 2 (fall 2007) Laboratory exercise #2: Internetworking Name Student ID Signature In this exercise we will connect our LANs made in first exercise with routers and build an internet.
Addressing and Routing
Addressing and Routing Andrew Scott a.scott@lancaster.ac.uk Physical/ Hardware Addresses Aka MAC* or link(-layer) address Can only talk to things on same link Unique ID given to every network interface
Update from the RIPE NCC
Update from the RIPE NCC INEX Meeting, Dublin, 14 December 2011 Mirjam Kühne, RIPE NCC Outline RIPE Labs - Background, Purpose, Content, Participation IPv6 Activities and Statistics RIPE Atlas RIPEstat
Chapter 7: IP Addressing CCENT Routing and Switching Introduction to Networks v6.0
Chapter 7: IP Addressing CCENT Routing and Switching Introduction to Networks v6.0 CCNET v6 13 Chapter 7 - Sections & Objectives 7.1 IPv4 Network Addresses Convert between binary and decimal numbering
New IP Header. Why change IP. Address Notation. Changes. Information Sources. IP Version 6 ITL
Information Sources IP Version 6 ITL www.ipv6.org Christian Huitema, IPv6, The New Internet Protocol, Prentice Hall PTR, 1996. Lots of RFCs, 3513 describes the current address format Many others, see the
Information Sources Hans Kruse & Shawn Ostermann, Ohio University
IP Version 6 ITL Information Sources www.ipv6.org Christian Huitema, IPv6, The New Internet Protocol, Prentice Hall PTR, 1996. Lots of RFCs, 3513 describes the current address format Many others, see the
RIPE Atlas. Philip Smith Network Startup Resource Center (NSRC) PacNOG th July 2014, Port Vila, Vanuatu
Philip Smith Network Startup Resource Center (NSRC) PacNOG 15 14 th July 2014, Port Vila, Vanuatu Intro https://atlas.ripe.net 3 Atlas in the Pacific 4 Measurement Devices 5 v1 & v2: Lantronix XPort Pro
Chapter 06 IP Address
Chapter 06 IP Address IP Address Internet address Identifier used at IP layer 32 bit binary address The address space of IPv4 is 2 32 or 4,294,967,296 Consists of netid and hosted IP Address Structure
CCNA Questions/Answers IPv6. Select the valid IPv6 address from given ones. (Choose two) A. FE63::0043::11:21 B :2:11.1 C.
Select the valid IPv6 address from given ones. (Choose two) A. FE63::0043::11:21 B. 191.2.1.2:2:11.1 C. 2001::98 D. 2002:c0a8:101::42 E. :2001:: F. 2002.cb0a:3cdd:1::1 Answer: C, D. 2013 1 Which method
OSI Data Link & Network Layer
OSI Data Link & Network Layer Erkki Kukk 1 Layers with TCP/IP and OSI Model Compare OSI and TCP/IP model 2 Layers with TCP/IP and OSI Model Explain protocol data units (PDU) and encapsulation 3 Addressing
Enter your answers to the questions in this lab using Canvas Quiz Ch.5 Global Unicast Address + Lab. Additional questions are included in the quiz.
Lab: Introducing Global Unicast Addresses CIS 116 IPv6 Fundamentals Enter your answers to the questions in this lab using Canvas Quiz Ch.5 Global Unicast Address + Lab. Additional questions are included
Information Sources Hans Kruse & Shawn Ostermann, Ohio University
IP Version 6 ITL Information Sources www.ipv6.org Christian Huitema, IPv6, The New Internet Protocol, Prentice Hall PTR, 1996. Lots of RFCs, 3513 describes the current address format Many others, see the
Chapter 3 - Implement an IP Addressing Scheme and IP Services to Meet Network Requirements for a Small Branch Office
ExamForce.com 640-822 CCNA ICND Study Guide 31 Chapter 3 - Implement an IP Addressing Scheme and IP Services to Meet Network Requirements for a Small Branch Office Describe the need and role of addressing
Introduction to IPv6
Introduction to IPv6 1 IP Next Generation - Agenda Rationale behind IPv6 IPv6 functionality Transition strategy IPv6 current status 2 Rationale Behind IPv6 Address depletion concerns? Circa 1994 routing
01/17/08 TDC /17/08 TDC363-03
Introduction to LAN TDC 363 Week 3 Network Protocols Book: Chapter 4 & 11 1 Outline The TCP/IP model vs. the OSI Model IP Address Address Resolution Protocol (ARP) IPX/SPX and NetBIOS Protocols on Windows
Contents. Ping, tracert, and system debugging commands 1 debugging 1 display debugging 2 ping 2 ping ipv6 5 tracert 7 tracert ipv6 9
Contents Ping, tracert, and system debugging commands 1 debugging 1 display debugging 2 ping 2 ping ipv6 5 tracert 7 tracert ipv6 9 i Ping, tracert, and system debugging commands debugging Syntax Default
lab rip experiences with RIPv2 distance vector protocol
lab rip experiences with RIPv2 distance vector protocol hosts need routing each host with a network stack performs some elementary routing ip layer nic eth0? lo the network stack may be used to access
OSI Data Link & Network Layer
OSI Data Link & Network Layer Erkki Kukk 1 Layers with TCP/IP and OSI Model Compare OSI and TCP/IP model 2 Layers with TCP/IP and OSI Model Explain protocol data units (PDU) and encapsulation 3 Addressing
Lecture 1: Introduction
Int ernet w orking Lecture 1: Introduction The Internet, underlying link layer, and IP addressing Literature: Forouzan: TCP/IP Protocol Suite: Ch 1-5 The Internet today 250 million hosts 580 million users
K-Root Nameserver Operations
K-Root Nameserver Operations Andrei Robachevsky Chief Technical Officer andrei@ripe.net 1 Outline Root Server System What is a root server? Where is the root? Anycast Routing The basics Advantages of using
Donato Ba*aglino Lorenzo Bracciale
IP Donato Ba*aglino Lorenzo Bracciale Outline why IP (mo:va:on) IP architecture (router, LAN) IP addressing Sta:c IP (CIDR, host + net) DHCP Rou:ng IP ARP Why IP? There are many different LAN technologies
MPLS VPN--Inter-AS Option AB
The feature combines the best functionality of an Inter-AS Option (10) A and Inter-AS Option (10) B network to allow a Multiprotocol Label Switching (MPLS) Virtual Private Network (VPN) service provider
Ochrana proti DDoS za použitia open-source software. Katarína Ďurechová
Ochrana proti DDoS za použitia open-source software Katarína Ďurechová katarina.durechova@nic.cz 30.11.2013 Distributed Denial of Service odopretie služby dosiahnutím limitu pripojenia sieťovej karty CPU
CS 356: Computer Network Architectures. Lecture 10: IP Fragmentation, ARP, and ICMP. Xiaowei Yang
CS 356: Computer Network Architectures Lecture 10: IP Fragmentation, ARP, and ICMP Xiaowei Yang xwy@cs.duke.edu Overview Homework 2-dimension parity IP fragmentation ARP ICMP Fragmentation and Reassembly
TSIN02 - Internetworking
Lecture 2: The Internet Protocol Literature: Forouzan: ch 4-9 and ch 27 2004 Image Coding Group, Linköpings Universitet Outline About the network layer Tasks Addressing Routing Protocols 2 Tasks of the
Internet Control Message Protocol (ICMP)
Internet Control Message Protocol (ICMP) 1 Overview The IP (Internet Protocol) relies on several other protocols to perform necessary control and routing functions: Control functions (ICMP) Multicast signaling
CN1047 INTRODUCTION TO COMPUTER NETWORKING CHAPTER 5 OSI MODEL NETWORK LAYER
CN1047 INTRODUCTION TO COMPUTER NETWORKING CHAPTER 5 OSI MODEL NETWORK LAYER Network Layer Network layer manages options pertaining to host and network addressing, managing subnetworks, and internetworking.
OSI Data Link & Network Layer
OSI Data Link & Network Layer Erkki Kukk 1 Layers with TCP/IP and OSI Model Compare OSI and TCP/IP model 2 Layers with TCP/IP and OSI Model Explain protocol data units (PDU) and encapsulation 3 Addressing
Juniper.Selftestengine.jn0-694.v by.KIM-HL.52q
Juniper.Selftestengine.jn0-694.v2013-10-24.by.KIM-HL.52q Number: jn0-694 Passing Score: 800 Time Limit: 120 min File Version: 18.5 http://www.gratisexam.com/ Exam Code: JN0-694 Exam Name: Enterprise Routing
MPLS VPN Inter-AS Option AB
First Published: December 17, 2007 Last Updated: September 21, 2011 The feature combines the best functionality of an Inter-AS Option (10) A and Inter-AS Option (10) B network to allow a Multiprotocol
Internetworking/Internetteknik, Examination 2G1305 Date: August 18 th 2004 at 9:00 13:00 SOLUTIONS
Internetworking/Internetteknik, Examination 2G1305 Date: August 18 th 2004 at 9:00 13:00 SOLUTIONS 1. General (5p) a) The so-called hourglass model (sometimes referred to as a wine-glass ) has been used
RIPE Atlas Update. Robert Kisteleki RIPE NCC
Update Robert Kisteleki RIPE NCC Introduction Coverage 3 Coverage 4 Measurement Devices 5 v1 & v2: Lantronix XPort Pro v3: TP-Link TL-MR3020 powered from USB port - Does not work as a wireless router -
History Page. Barracuda NextGen Firewall F
The Firewall > History page is very useful for troubleshooting. It provides information for all traffic that has passed through the Barracuda NG Firewall. It also provides messages that state why traffic
Ch. 5 Maintaining and Troubleshooting Routing Solutions. Net412- Network troubleshooting
Ch. 5 Maintaining and Troubleshooting Routing Solutions Net412- Network troubleshooting Troubleshooting Routing Network Layer Connectivity EIGRP OSPF 2 Network Connectivity Just like we did when we looked
Transitioning to IPv6
Transitioning to IPv6 麟瑞科技區域銷售事業處副處長張晃崚 CCIE #13673 2007 Cisco Systems, Inc. All rights reserved. ICND2 v1.0 7-1 IPv4 and IPv6 Currently, there are approximately 1.3 billion usable IPv4 addresses available.
IPv6 DEPLOYMENT GLOBAL TRANSIT COMMUNICATIONS. Presented by Mark Tinka Chief Network Architect Global Transit Kuala Lumpur, Malaysia
IPv6 DEPLOYMENT GLOBAL TRANSIT COMMUNICATIONS Presented by Mark Tinka Chief Network Architect Global Transit Kuala Lumpur, Malaysia IPv6: The Interest IPv6: The Interest Main reason; readiness for effects
CIS Test 1- Practice - Fall 2011
CIS 192 - Test 1- Practice - Fall 2011 Name Each question worth 2 points: Tip: When not logged in as root, you can still use many of the network commands but you must preface them with /sbin/ because you
Does Anycast Hang Up on You (UDP and TCP)? Lan Wei and John Heidemann, Fellow, IEEE
IEEE TRANSACTIONS ON NETWORK AND SERVICE MANAGEMENT, VOL. 15, NO. 2, JUNE 2018 707 Does Anycast Hang Up on You (UDP and TCP)? Lan Wei and John Heidemann, Fellow, IEEE Abstract Anycast-based services today
Cisco. Deploying Cisco Service Provider(R) Advanced Routing (SPADVOUTE)
Cisco 642-885 Deploying Cisco Service Provider(R) Advanced Routing (SPADVOUTE) Download Full Version : http://killexams.com/pass4sure/exam-detail/642-885 E. NSF Answer: A QUESTION: 125 Refer to the exhibit.
Static and source based routing
Static and source based routing Lab setup For this lab students have to work in teams of two. Two team of two students (that is overall four students) should form a group and perform lab tasks together.
MPLS VPN Half-Duplex VRF
The feature provides scalable hub-and-spoke connectivity for subscribers of an Multiprotocol Label Switching (MPLS) Virtual Private Network (VPN) service. This feature addresses the limitations of hub-and-spoke
Rocky Mountain IPv6 Summit April 9, 2008
Rocky Mountain IPv6 Summit April 9, 2008 Introduction to the IPv6 Protocol Scott Hogg GTRI - Director of Advanced Technology Services CCIE #5133, CISSP 1 IPv6 Header IPv4 Header 20 bytes IPv6 Header, 40
IPv6 Protocol & Structure. npnog Dec, 2017 Chitwan, NEPAL
IPv6 Protocol & Structure npnog3 9-11 Dec, 2017 Chitwan, NEPAL Protocol Header Comparison IPv4 contains 10 basic header fields, while IPv6 has 6 basic header fields IPv6 header size is 40 octets compared
Contents. Ping, tracert, and system debugging commands 1. debugging 1 display debugging 1 ping 2 ping ipv6 5 tracert 7 tracert ipv6 10
Contents Ping, tracert, and system debugging commands 1 debugging 1 display debugging 1 ping 2 ping ipv6 5 tracert 7 tracert ipv6 10 i Ping, tracert, and system debugging commands debugging Syntax Default
IPv6 Protocol Architecture
IPv6 Protocol Architecture v4/v6 Header Comparison Not kept in IPv6 Renamed in IPv6 Same name and function New in IPv6 2 New Functional Improvement Address Space Increase from 32-bit to 128-bit address
Outline. IP Address. IP Address. The Internet Protocol. o Hostname & IP Address. o The Address
Outline IP The Internet Protocol o IP Address IP subnetting CIDR o ARP Protocol o IP Function o Fragmentation o NAT o IPv6 2 IP Address o Hostname & IP Address IP Address o The Address ping www.nu.ac.th
ICS 351: Today's plan. routing protocol comparison encapsulation network dynamics multicasting in general IP multicasting IGMP PIM
ICS 351: Today's plan routing protocol comparison encapsulation network dynamics multicasting in general IP multicasting IGMP PIM what routing is not: Ethernet switching does not use IP addresses in any
Last time. Network layer. Introduction. Virtual circuit vs. datagram details. IP: the Internet Protocol. forwarding vs. routing
Last time Network layer Introduction forwarding vs. routing Virtual circuit vs. datagram details connection setup, teardown VC# switching forwarding tables, longest prefix matching IP: the Internet Protocol
Network Layer: Logical Addressing
Network Layer: Logical Addressing Introduction The network layer is responsible for the delivery of individual packets from source to the destination host Logical Addressing A universal addressing system
Router Lab Reference
KTHNOC Router Lab Reference Juniper version Table of Contents 1 Introduction...3 2 Reference: Workstation...3 2.1 Configuring network access...3 2.2 Connecting to your router...4 3 Reference: Basic commands...4
Contents. Configuring urpf 1
Contents Configuring urpf 1 Overview 1 urpf check modes 1 Features 1 urpf operation 2 Network application 3 Configuration procedure 4 Displaying and maintaining urpf 4 urpf configuration example 4 Configuring
Communication Networks
Communication Networks Spring 2018 Q&A Session Rüdiger Birkner Tobias Bühler https://comm-net.ethz.ch/ ETH Zürich August 6 2018 Old exam from 2016 3 hours instead of 2.5 Topics which we did not discuss
IP - The Internet Protocol. Based on the slides of Dr. Jorg Liebeherr, University of Virginia
IP - The Internet Protocol Based on the slides of Dr. Jorg Liebeherr, University of Virginia Orientation IP (Internet Protocol) is a Network Layer Protocol. IP: The waist of the hourglass IP is the waist
Agenda L2 versus L3 Switching IP Protocol, IP Addressing IP Forwarding ARP and ICMP IP Routing First Hop Redundancy
Primer IP Technology L2 Ethernet Switching versus L3 routing IP Protocol, IP Addressing, IP Forwarding ARP and ICMP IP Routing, OSPF Basics First Hop Redundancy (HSRP) Agenda L2 versus L3 Switching IP
Full file at
ch02 True/False Indicate whether the statement is true or false. 1. IP addresses have links to domain names to make it possible for users to identify and access resources on a network. 2. As a frame moves
CTRS Utils Commands CHAPTER
CHAPTER 7 Revised: November 2009, This chapter contains Cisco TelePresence Recording Server (CTRS) utils commands: utils create report hardware, page 7-3 utils iothrottle disable, page 7-4 utils iothrottle
IETF RFCs Supported by Cisco NX-OS Unicast Features Release 6.x
IETF Supported by Cisco NX-OS Unicast Features Release 6.x BGP, page 1 First-Hop Redundancy Protocols, page 2 IP Services, page 3 IPv6, page 3 IS-IS, page 4 OSPF, page 5 RIP, page 5 BGP RFC 1997 BGP Communities
TCP/IP Protocol Suite
TCP/IP Protocol Suite Computer Networks Lecture 5 http://goo.gl/pze5o8 TCP/IP Network protocols used in the Internet also used in today's intranets TCP layer 4 protocol Together with UDP IP - layer 3 protocol
BIRD Internet Routing Daemon. CZ.NIC z. s. p. o. Ondřej Filip / Oct 9, 2009 RIPE 59 / Lisbon
BIRD Internet Routing Daemon CZ.NIC z. s. p. o. Ondřej Filip / ondrej.filip@nic.cz Oct 9, 2009 RIPE 59 / Lisbon 1 Project history Project started in 1999 Seminar project Charles University Prague Project
University of Toronto Faculty of Applied Science and Engineering. Final Exam, December ECE 461: Internetworking Examiner: J.
University of Toronto Faculty of Applied Science and Engineering Final Exam, December 2009 ECE 461: Internetworking Examiner: J. Liebeherr Exam Type: A Calculator: Type 2 There are a total of 10 problems.
INDEX. BGP Attributes Download. bgp policy accounting command broadcast addresses, used instead of bundle-hash command. cache entries, definition
INDEX HC IC MCC MNC MPC QC RC SC SMC A Cisco IOS XR Interface and Hardware Component Configuration Guide Cisco IOS XR IP Addresses and Services Configuration Guide Cisco IOS XR Multicast Configuration
Internet Protocol (IP)
CPSC 360 - Network Programming Internet Protocol (IP) Michele Weigle Department of Computer Science Clemson University mweigle@cs.clemson.edu March 14, 2005 http://www.cs.clemson.edu/~mweigle/courses/cpsc360
Supported Standards. Class of Service Tagging for Ethernet frames. Multiple Spanning Tree Protocol. Rapid Spanning Tree Protocol
, page 1 This table lists the IEEE compliance standards. Table 1: IEEE Compliance s 802.1D MAC Bridges 802.1p Class of Service Tagging for Ethernet frames 802.1Q VLAN Tagging 802.1s Multiple Spanning Tree
Table of Contents 1 IPv6 Configuration IPv6 Application Configuration 2-1
Table of Contents 1 IPv6 Configuration 1-1 IPv6 Overview 1-1 IPv6 Features 1-1 Introduction to IPv6 Address 1-2 Introduction to IPv6 Neighbor Discovery Protocol 1-5 Introduction to ND Snooping 1-7 Introduction
The term "router" in this document refers to both routers and Layer 3 switches. Step Command Remarks. ipv6 host hostname ipv6-address
Contents Configuring IPv6 DNS 1 Overview 1 Configuring the IPv6 DNS client 1 Configuring static domain name resolution 1 Configuring dynamic domain name resolution 1 Displaying and maintaining IPv6 DNS
Vendor: Cisco. Exam Code: Exam Name: Implementing Cisco IP Routing (ROUTE v2.0) Version: Demo
Vendor: Cisco Exam Code: 300-101 Exam Name: Implementing Cisco IP Routing (ROUTE v2.0) Version: Demo DEMO QUESTION 1 Refer to the exhibit. The DHCP client is unable to receive a DHCP address from the DHCP
FSOS VPN Command Line Reference
FSOS VPN Command Line Reference Contents 1 VRF Commands...3 1.1 ip vrf...3 1.2 show ip vrf... 4 1.3 ip vrf forwarding... 5 1.4 ip route vrf...6 1.5 arp vrf...7 1.6 show ip arp vrf... 9 1.7 clear ip arp
How to Configure Forcepoint NGFW Route-Based VPN to AWS with BGP TECHNICAL DOCUMENT
How to Configure Forcepoint NGFW Route-Based VPN to AWS with BGP TECHNICAL DOCUMENT Table of Contents TABLE OF CONTENTS 1 INTRODUCTION 2 AWS Configuration: 2 Forcepoint Configuration 3 APPENDIX 7 Troubleshooting
Internet Protocols (chapter 18)
Internet Protocols (chapter 18) CSE 3213 Fall 2011 Internetworking Terms 1 TCP/IP Concepts Connectionless Operation Internetworking involves connectionless operation at the level of the Internet Protocol
Contents. Configuring MSDP 1
Contents Configuring MSDP 1 Overview 1 How MSDP works 1 MSDP support for VPNs 6 Protocols and standards 6 MSDP configuration task list 7 Configuring basic MSDP features 7 Configuration prerequisites 7
Configuring sflow. Information About sflow. sflow Agent. This chapter contains the following sections:
This chapter contains the following sections: Information About sflow, page 1 Licensing Requirements, page 2 Prerequisites, page 2 Guidelines and Limitations for sflow, page 2 Default Settings for sflow,
Implementing VXLAN. Prerequisites for implementing VXLANs. Information about Implementing VXLAN
This module provides conceptual information for VXLAN in general and configuration information for layer 2 VXLAN on Cisco ASR 9000 Series Router. For configuration information of layer 3 VXLAN, see Implementing
Table of Contents 1 System Maintaining and Debugging Commands 1-1
Table of Contents 1 System Maintaining and Debugging Commands 1-1 System Maintaining Commands 1-1 ping 1-1 tracert 1-4 System Debugging Commands 1-6 debugging 1-6 display debugging 1-7 i 1 System Maintaining
Chapter 02 How Computers Find Each Other on Networks
Chapter 02 How Computers Find Each Other on Networks TRUEFALSE 1. A hexadecimal number is a number written in the base 16 number system. (A) True (B) False 2. DNS follows a centralized database model.
Routing. Basic principles. Karst Koymans. Informatics Institute University of Amsterdam. (version 16.4, 2017/02/23 10:58:58)
Routing Basic principles Karst Koymans Informatics Institute University of Amsterdam (version 16.4, 2017/02/23 10:58:58) Friday, February 24, 2017 Karst Koymans (UvA) Routing Friday, February 24, 2017
Configuring IPv6 DNS. Introduction to IPv6 DNS. Configuring the IPv6 DNS client. Configuring static domain name resolution
Contents Configuring IPv6 DNS 2 Introduction to IPv6 DNS 2 Configuring the IPv6 DNS client 2 Configuring static domain name resolution 2 Configuring dynamic domain name resolution 2 Displaying and maintaining
Rendezvous Point Engineering
Rendezvous Point Engineering Last updated: November 2008 Introduction A Rendezvous Point (RP) is a router in a multicast network domain that acts as a shared root for a multicast shared tree. Any number
IPv6 at NPO. Bart Roos Marco Wessel
IPv6 at NPO Bart Roos Marco Wessel NPO Intro NPO: Dutch Public Broadcasting NPO ICT: ISP for broadcasters Large network, providing a.o.: uitzendinggemist.nl omroep.nl live-streams of events etc. Intro
Chapter 5 Network Layer
Chapter 5 Network Layer Network Layer IPv4 2 IP Header Application Header + data 3 IP IP IP IP 4 Focus on Transport Layer IP IP 5 Network Layer The Network layer (Layer 3) provides services to exchange