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1,778 bytes added, 19 September
Tidy up
= IPv6 Only =
Here is our page about running an IPv6 only network: [[IPv6 Only]]network
= IPv6 Routers =
We have a wiki page about IPv6 Routers [[IPv6 Routers]]
= IPv6 for Customer Connections =
This is how we route and assign IPv6 on DSL connections.
Customers are allocated a /48 block of addresses - this is usually per customer, and so a customer with multiple circuits or sites will have a /64 allocated from the larger /48 block. A /48 contains 65536 /64's and a /64 subnet is 18 million trillion addresses.
(Here, Customer Premises Equipment (CPE ) refers to the router belonging to the customer which is being used at their end of the broadband line, and L2TP Network Server (LNS) refers to our equipment at our end of the broadband link.)
When the CPE logs in and negotiates PPP , we use IPV6CP to assign negotiate an IPv6 'WAN' addressinterface identifier - this happens at the same time as IPCP happens to negotiate V4 connectivity. This address is Once this has been negotiated, the CPE should perform an ICMPv6 Router Solicitation - our LNSes will then reply with a single IPv6 ICMPv6 Router Advertisement in order to negotiate the [ Link Local] address in the form ofFE80::, and will be based on the MAC address of the interface.At this stage, there should be basic IPv6 connectivity to link-local, and if static routes and manually assigned addresses in place you should have a working connection. 2001:8b0:1111:1111:[your IPv4 WAN in HEX]Our LNSes continue to send ICMPv6 Router Advertisements approximately once an hour (every 4096 seconds).
At this point we will also Optionally, if routes and addresses have not been configured statically, DHCPv6 can be routing any used for automatic negotiation of the IPv6 blocks WAN and LAN prefixes - using DHCPv6 is usually the default for our routers (i.e. the ZyXEL) that we supply.When DHCPv6 is enabled, the CPE sends a DHCPv6 Solicitation to this WAN the IPv6 broadcast address, containing a list of options that it requires. Usually Once we receive the DHCPv6 Solicitation, the LNS you are connected to will send a line will have at least one /64 blockreply containing responses to the options requested. The CPE can then take the options and apply them as appropriate.
In the DHCPv6 Solicitation, you would usually request DHCPv6 IA (Option 3, Identity Association for Non-temporary Address) to assign your IPv6 'WAN' address. This address is a single IPv6 address in the form of: 2001:8b0:1111:1111:0:ffff:[your IPv4 WAN in HEX]We also respond to DHCPv6 Prefix Delegation (PDOption 25, Identity Association for Prefix Delegation, responded to by Option 26, IA Prefix) from the CPE and we'll tell the CPE one of the /64 Blocks. -this may be requested multiple times by the CPE.A Client Identifier (Option 1) is also present in the DHCPv6 transaction, optionally DNS recursive name server (Option 23) can be requested.
The CPE At this point we will also assign itself be routing any IPv6 blocks to your /128 WAN address. Usually a [http:line will have at least one /64 block routed. Customers can add additional /en64 blocks on the Control Pages that will be If you want the whole /wiki/Link-local_address Link Local] address in 48 routed, untick the form routing on all of FE80::the /64s you have, they disappear, and then tick the line routing on the /48 you have. Alternatively Support staff can help. Your router will be based on have to reconnect to AAISP before the MAC new block is routed to your /128 WAN address . You will have to allow the new block through any firewall you have, and then route the new block appropriately on your local network. {| class="wikitable"|+How many IPs?|-! Subnet !! Addresses !! |-| /64 || 18,446,744,073,709,551,616 || about 18 million trillion|-| /48 || 65,536 lots of the interface/64's <br/>1,208,925,819,614,629,174,706,176 total! || about 1.2 septillion*|} ''*Actually: 1 septillion, 208 sextillion, 925 quintillion, 819 quadrillion, 614 trillion, 629 billion, 174 million, 706 thousand, 1 hundred and 76''
===Example Logs===
PPP logs can be viewed from the control pages, it's the LNS Log button. Example:
l2tp-rx T20-1566- S6694-2278 PPP Tx 8057:IPV6CP 01 00 000E ConfReq 01:I/F 0A 02:03:97:ff:fe:05:c0:00 [CIRCUIT ID] [LOGIN]
l2tp-rx T20-1566- S6694-2278 PPP Rx FF03 8057:IPV6CP 01 00 000E ConfReq 01:I/F 0A 02:03:97:ff:fe:0f:00:02 [CIRCUIT ID] [LOGIN]
l2tp-rx T20-1566- S6694-2278 PPP Tx 8057:IPV6CP 02 00 000E ConfAck 01:I/F 0A 02:03:97:ff:fe:0f:00:02 [CIRCUIT ID] [LOGIN]
l2tp-rx T20-1566- S6694-2278 PPP Rx FF03 8057:IPV6CP 02 00 000E ConfAck 01:I/F 0A 02:03:97:ff:fe:05:c0:00 [CIRCUIT ID] [LOGIN]
l2tp-rx T20-1566- S6694-2278 Routes 2001:8b0:XXX::/64 2001:8b0:1111:1111::XXX/128 [CIRCUIT ID] [LOGIN]

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