Go offline with the Player FM app!
Episode 10 – IPv6 Internet Addressing
Archived series ("Inactive feed" status)
When? This feed was archived on August 01, 2022 18:00 (). Last successful fetch was on April 12, 2018 08:32 ()
Why? Inactive feed status. Our servers were unable to retrieve a valid podcast feed for a sustained period.
What now? You might be able to find a more up-to-date version using the search function. This series will no longer be checked for updates. If you believe this to be in error, please check if the publisher's feed link below is valid and contact support to request the feed be restored or if you have any other concerns about this.
Manage episode 159287618 series 1171397
We returned to record our tenth episode on Sunday August 21, 2016.
Interesting News and Events
- Cisco, Fortinet confirm vulnerabilities from NSA Shadow Brokers hack
- How ICMPv6 Multicast Listener Reports almost spoiled Christmas – almost 2 years later I ran into this problem again on a Cisco Catalyst 4510R, packet trace of the problem provided the hint.
- Expired AP Certificates break Cisco Wireless LAN Controller
- FCC Regulatory Domain -B APs (additional 5Ghz channels and some DFS changes)
Roundtable Discussion – IPv6
IPv4
IPv4 provides an addressing capability of 232 or approximately 4.3 billion addresses
RFC 791 September 1981
Issues with IPv4 addressing:
- not enough available address space
- all blocks are already provisioned
- conflicting IPv4 addressing between networks requires NAT
Grey/Black market for IPv4 Address space;
Microsoft pays Nortel $7.5 million for IPv4 addresses – Bankrupt Nortel finds a buyer for 666K of its legacy IPv4 addresses, raising questions if the IPv4 black/grey market has arrived.
Cellular Mobile 3G/4G Networks – Carrier NAT
Local Internet Registry
- Asia-Pacific Network Information Centre (APNIC)
- Réseaux IP Européens Network Coordination Centre (RIPE_NCC)
- Latin America and Caribbean Network Information Centre (LACNIC)
- American Registry for Internet Numbers (ARIN)
- African Network Information Center (AFRINIC)
IP NG – early working-group proposals
The Internet Engineering Task Force adopted the IPng model on 25 July 1994, with the formation of several IPng working groups.[4] By 1996, a series of RFCs was released defining Internet Protocol version 6 (IPv6), starting with RFC 1883. (Version 5 was used by the experimental Internet Stream Protocol.)
IPv6 Addresses -128Bit 3.4×10^38 addresses
Just how many IPv6 addresses are there? Really?
Address Types
- Unicast
- Multicast
- Anycast
Dual-Stack IPv6 Use cases:
- Management networks
- home net / Mobile Laptop connectivity via IPv6 Tunnel
- mergers , change the subnet / prefix on the fly
IPv6: Privacy Extensions
- Stateless address autoconfiguration (SLAAC)
Neighbor Discovery
What is no longer available?
- NAT
- packet fragmentation by routers >> MTU path discovery has to be working for IPv6
- Broadcast
IPv6 Issues and Problems (IPv6 Multicast Listener Flooding)
http://packetpushers.net/good-nics-bad-things-blast-ipv6-multicast-listener-discovery-queries/
https://blog.bimajority.org/2014/09/05/the-network-nightmare-that-ate-my-week/ (Garrett Wollman)
How to check IPv6 connectivity
The Turtle is dancing – http://www.kame.net/
Who is already available in IPv6? More than you think, Google, Facebook and many other large web centric companies.
Tunnel Mechnaism:
Free 4to6 Tunnel broker:
https://tunnelbroker.net/ >> Hurricane Electric
IPv6 traffic is encapsulated into IPv4 using IPv6-in-IP, UDP (Teredo), or Intra-Site Automatic Tunnel Addressing Protocol (ISATAP)
IPv6 Cheat sheat – http://packetlife.net/media/library/8/IPv6.pdf
Naming IPv6 address parts – Proposed IETF RFC and a VOTE – chazwazza
Cheers!
10 episodes
Archived series ("Inactive feed" status)
When? This feed was archived on August 01, 2022 18:00 (). Last successful fetch was on April 12, 2018 08:32 ()
Why? Inactive feed status. Our servers were unable to retrieve a valid podcast feed for a sustained period.
What now? You might be able to find a more up-to-date version using the search function. This series will no longer be checked for updates. If you believe this to be in error, please check if the publisher's feed link below is valid and contact support to request the feed be restored or if you have any other concerns about this.
Manage episode 159287618 series 1171397
We returned to record our tenth episode on Sunday August 21, 2016.
Interesting News and Events
- Cisco, Fortinet confirm vulnerabilities from NSA Shadow Brokers hack
- How ICMPv6 Multicast Listener Reports almost spoiled Christmas – almost 2 years later I ran into this problem again on a Cisco Catalyst 4510R, packet trace of the problem provided the hint.
- Expired AP Certificates break Cisco Wireless LAN Controller
- FCC Regulatory Domain -B APs (additional 5Ghz channels and some DFS changes)
Roundtable Discussion – IPv6
IPv4
IPv4 provides an addressing capability of 232 or approximately 4.3 billion addresses
RFC 791 September 1981
Issues with IPv4 addressing:
- not enough available address space
- all blocks are already provisioned
- conflicting IPv4 addressing between networks requires NAT
Grey/Black market for IPv4 Address space;
Microsoft pays Nortel $7.5 million for IPv4 addresses – Bankrupt Nortel finds a buyer for 666K of its legacy IPv4 addresses, raising questions if the IPv4 black/grey market has arrived.
Cellular Mobile 3G/4G Networks – Carrier NAT
Local Internet Registry
- Asia-Pacific Network Information Centre (APNIC)
- Réseaux IP Européens Network Coordination Centre (RIPE_NCC)
- Latin America and Caribbean Network Information Centre (LACNIC)
- American Registry for Internet Numbers (ARIN)
- African Network Information Center (AFRINIC)
IP NG – early working-group proposals
The Internet Engineering Task Force adopted the IPng model on 25 July 1994, with the formation of several IPng working groups.[4] By 1996, a series of RFCs was released defining Internet Protocol version 6 (IPv6), starting with RFC 1883. (Version 5 was used by the experimental Internet Stream Protocol.)
IPv6 Addresses -128Bit 3.4×10^38 addresses
Just how many IPv6 addresses are there? Really?
Address Types
- Unicast
- Multicast
- Anycast
Dual-Stack IPv6 Use cases:
- Management networks
- home net / Mobile Laptop connectivity via IPv6 Tunnel
- mergers , change the subnet / prefix on the fly
IPv6: Privacy Extensions
- Stateless address autoconfiguration (SLAAC)
Neighbor Discovery
What is no longer available?
- NAT
- packet fragmentation by routers >> MTU path discovery has to be working for IPv6
- Broadcast
IPv6 Issues and Problems (IPv6 Multicast Listener Flooding)
http://packetpushers.net/good-nics-bad-things-blast-ipv6-multicast-listener-discovery-queries/
https://blog.bimajority.org/2014/09/05/the-network-nightmare-that-ate-my-week/ (Garrett Wollman)
How to check IPv6 connectivity
The Turtle is dancing – http://www.kame.net/
Who is already available in IPv6? More than you think, Google, Facebook and many other large web centric companies.
Tunnel Mechnaism:
Free 4to6 Tunnel broker:
https://tunnelbroker.net/ >> Hurricane Electric
IPv6 traffic is encapsulated into IPv4 using IPv6-in-IP, UDP (Teredo), or Intra-Site Automatic Tunnel Addressing Protocol (ISATAP)
IPv6 Cheat sheat – http://packetlife.net/media/library/8/IPv6.pdf
Naming IPv6 address parts – Proposed IETF RFC and a VOTE – chazwazza
Cheers!
10 episodes
All episodes
×Welcome to Player FM!
Player FM is scanning the web for high-quality podcasts for you to enjoy right now. It's the best podcast app and works on Android, iPhone, and the web. Signup to sync subscriptions across devices.