I have a modem with IPv4 and IPv6 configurations. And in my Cisco BRAS iOS server have a IPv6 configurations.
My topoly is BRAS server(DHCPv4 adn DHCPv6 server) --> L2 cisco switch --> Modem
I am configuring the modem like tagging WAN and I cannot get IPv6 from DHCPv6 server but I can get the IPv4 IP from DHCPv4 server. I have configured my port in switch as Tagged/Trunk. But I can't get IP from DHCPv6 server in tagging config.
Here is my DHCP pool config and Interface config in my server.
ipv6 dhcp pool STATEFUL
address prefix 2001:1111:1111:1234::/64
ipv6 dhcp pool dhcpv6
prefix-delegation pool ipv6_pool1 lifetime 7200 300
address prefix 2001:470:19:417::/64
description VLAN 20 PPPPoE/DHCP
encapsulation dot1Q 20
ip dhcp relay information trusted
ip address 10.102.2.1 255.255.255.0 secondary
ip address 10.102.1.1 255.255.255.0
no ip redirects
no ip proxy-arp
ip accounting output-packets
ip accounting access-violations
ip nat inside
no ip virtual-reassembly
no ip mroute-cache
ipv6 address 2001:470:19:417::1/64
ipv6 dhcp server dhcpv6
pppoe enable group global
no cdp enable
arp timeout 86400
Solved! Go to Solution.
What was the issue and most of all how have you fixed this issue because i'm facing the same problem : i can get an ipv4 address but not an ipv6 address, using statefull dhcp, via a trunk port.
thanks for you help