Re: IPv6 Implementation for CUCM 8.0

Kyle Sullivan · ‎10-06-2010

I am trying implement stateful IPv6 via DHCP for the IP Phones in my CUCM 8.0 Lab environment. After reviewing much documentation, I can not get my L3 switch to send DHCP to my phones or a PC in that matter to establish network connectivity. I have the 3560-48-PS configured as a IPv6 DHCP server and assigned the address pool to a VLAN copied from a Cisco Lab example. Any help would be appreciated. I have attached parts of my config below. Enabling debug ipv6 dhcp detail does not display any output as if the messages are not being exchanged.

IOS Version 12.2(46)SE, RELEASE SOFTWARE (fc2)

version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname IPv6
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$xJQ9$84oBJIY8zPRlMjJZ4tYu..
enable password

!
no aaa new-model
clock timezone EST -5
system mtu routing 1500
ip subnet-zero
ip routing
!
!
ip multicast-routing distributed
no ip igmp snooping
ipv6 unicast-routing
ipv6 cef accounting prefix-length
ipv6 dhcp pool pool1
prefix-delegation 2001:DB8:1263::/48 0005000400F1A4D070D003
prefix-delegation pool pool1 lifetime 1800 60
address prefix 2001:1000::/64
link-address 2001:1001::/64
dns-server 2001:DB8:3000:3000::42
domain-name example.com
!
!

interface FastEthernet0/1
description downlink to clients
switchport access vlan 200
switchport mode access
spanning-tree portfast

interface Vlan1
no ip address
shutdown
!
interface Vlan200
description Voice
no ip address
ipv6 address FE80::1 link-local
ipv6 dhcp server pool1
!
ip classless
ip http server
ip http secure-server

=======================================

IPv6#sh ipv6 dhcp interface
Vlan200 is in server mode
Using pool: pool1
Preference value: 0
Hint from client: ignored
Rapid-Commit: disabled

IPv6#sh ipv6 dhcp pool
DHCPv6 pool: pool1
Static bindings:
    Binding for client 0005000400F1A4D070D003
      IA PD: IA ID not specified
        Prefix: 2001:DB8:1263::/48
                preferred lifetime 604800, valid lifetime 2592000
Prefix pool: pool1
Address allocation prefix: 2001:1000::/64 valid 172800 preferred 86400 (0 in use, 0 conflicts)
Link-address prefix: 2001:1001::/64
               preferred lifetime 60, valid lifetime 1800
DNS server: 2001:DB8:3000:3000::42
Domain name: example.com
Active clients: 0

Jose Mendez · ‎10-06-2010

Go to Callmanager Administration > System > Enterprise Parameters and tune the "Enable IPv6" and the "Allow Auto-Configuration for Phone"parameters. Here are other parameters that might help if you are completely sure your switch configuration is correct:

http://www.cisco.com/en/US/partner/docs/voice_ip_comm/cucm/admin/8_0_1/ccmfeat/fsipv6.html#wp1324283

Please rate useful posts

Kyle Sullivan · ‎10-06-2010

Jose,

Thanks for the info. I do not think the switch configuration is 100% correct. Maybe I titled this post inaccurately. I am unable to get have an IPv^ IP address pass to any device, IP Phone (7962 SCCP) or PC running a dual ipv4/6 TCPIP stack. I shouldn't need Call Manager IPv6 parameters defined for Phone or PC to retreive and IP address. I think I need some help reviwing the switch config to properly get the IPv6 DHCP server operational.