I have configure IPV6 DHCP by using below mentioned configuration, all my LAN PCs are getting IPV6 correctly and internet is also running well.
But if run this command on Router, so it shows Active Clients are always zero 0.
R1# sh ipv6 dhcp pool
DHCPv6 pool: DHCP_POOL
DNS server: 2001:470:ab::cd
Domain name: abc.com
Active clients: 0
R1# sh ipv6 dhcp binding --> also show empty result.
Can anyone please tell me the reason .
ipv6 dhcp pool DHCP_POOL
no ip address
ipv6 address 2400:FC00:ab::/64 eui-64
ipv6 nd prefix 2400:FC00:ab::/64
ipv6 nd other-config-flag
ipv6 dhcp server DHCP_POOL
ipv6 route ::/0 2400:FC00:ab::1
int fa0/0 is directly connected to my LAN Switch.
"Managed-config-flag" means that the router manages and controls the IPv6 addresses. Since it manages and controls, it has "state" because it tracks who has what address. Hence, it is "stateful DHCPv6."
"Other-config-flag" controls whether or not DHCPv6 hands out informational details, like DNS server information. Since it merely distributes information but does not track or retain state from the requestors, this is "stateless DHCPv6."
You need to set BOTH, not replace one with the other. Both the Managed and Other bit need to be set.
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You are using DHCP statelessly, meaning it is only providing configuration information like the DNS server but it is not managing IPv6 addresses. If you want the router to hand out and manage addresses instead of SLAAC, use
ipv6 nd managed-config-flag
so that the M bit is set in the router advertisements.
For more information, see: