Limitation On The Number Of Prefixes Used By Clients; Using Dhcpv6 Local Address Pools For Prefix Delegation Over Non-Ppp Links Example - Juniper JUNOSE SOFTWARE 11.0.X - BROADBAND ACCESS CONFIGURATION GUIDE 4-1-2010 Configuration Manual

Limitation on the Number of Prefixes Used by Clients

If you a configure a very large prefix range in an IPv6 local address pool, the number
of prefixes that can be used from that range by DHCPv6 clients is limited to 1048576.
Consider the following example in which an IPv6 local address pool, largePrefixRange,
is configured. The prefix range is specified by the starting prefix and its length as
3003:3003::/32.
The Total field of the output of the following show ipv6 local pool largePrefixRange
and show ipv6 local pool commands indicates the number of prefixes that can be
allocated to DHCPv6 clients: 1048756.
host1#show ipv6 local pool largePrefixRange
Pool : largePrefixRange
-----------------------
Utilization : 0
Start
-------------------------
3003:3003::/64
Start
-------------------------
3003:3003::/64
host1#show ipv6 local pool
Pool
---------------- -------------------------
largePrefixRange 3003:3003::/64
Pool Total
---------------- -------
largePrefixRange 1048576
Using DHCPv6 Local Address Pools for Prefix Delegation over non-PPP Links
Example
When a customer premises equipment (CPE) or requesting router and the provider
edge (PE) router are connected using a PPP link, one of the following pool names is
host1(config)#aaa domain-map westford.com
host1(config-domain-map)#ipv6-prefix-pool-name local_addr_pool
For more information about mapping domain names to the IPv6 local address
pool, see ipv6-prefix-pool-name.
host1(config)#ipv6 local pool largePrefixRange
host1(config-v6-local)#prefix 3003:3003::/32 64
host1(config-v6-local)#end
End
-------------------------
3003:3003:ffff:ffff::/64
Preferred
Exclude Util Lifetime
------- ---- ----------
0 0 1 day
IPv6 Local Address Pools
------------------------
Start
-------------------------
3003:3003:ffff:ffff::/64
In Use
-------
0

Using DHCPv6 Local Address Pools for Prefix Delegation over non-PPP Links Example

Chapter 1: Configuring Remote Access
Total In Use
------- -------
1048576 0
Valid
Lifetime
----------
1 day
End
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